{"title":"Power Supplies","description":"","products":[{"product_id":"xl6009e1-step-up-adjustable-dc-dc-switching-boost-converter","title":"XL6009E1 Step-Up Adjustable DC-DC Switching Boost Converter","description":"\u003cp\u003e\u003cstrong\u003eAdjustable XL6009E1 boost converter module for stepping a low-voltage DC rail up to a higher DC output.\u003c\/strong\u003e This compact board uses an XLSEMI XL6009E1 switching regulator with a multi-turn trimpot, screw-terminal-style input\/output pads, and a large inductor for small electronics and printer accessory power experiments.\u003c\/p\u003e\n\u003ch3\u003eWhy this over a fixed power supply\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAdjustable output:\u003c\/strong\u003e set the output with the onboard 25-turn potentiometer instead of being locked to one voltage.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eBoost-only behavior:\u003c\/strong\u003e useful when your output voltage needs to be higher than the input rail.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSmall module format:\u003c\/strong\u003e approximately \u003cstrong\u003e43 × 21 × 14 mm\u003c\/strong\u003e, so it fits easily in electronics bays and bench wiring setups.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eRegulator IC: \u003cstrong\u003eXLSEMI XL6009E1\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eConverter type: \u003cstrong\u003enon-isolated DC-DC step-up \/ boost\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eInput voltage: \u003cstrong\u003e5–32 V DC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eAdjustable output: up to \u003cstrong\u003e35 V DC\u003c\/strong\u003e, output must be higher than input\u003c\/li\u003e\n\u003cli\u003eSwitching frequency: \u003cstrong\u003e400 kHz\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003eRated module output current: up to \u003cstrong\u003e4 A\u003c\/strong\u003e, depending on input voltage, output voltage, cooling, and load\u003c\/li\u003e\n\u003cli\u003eAdjustment: onboard multi-turn trimpot\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse cases\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eBoosting a 5 V, 12 V, or 24 V DC rail for small electronics, LEDs, fans, sensors, and bench projects.\u003c\/li\u003e\n\u003cli\u003ePrinter accessory experiments where a compact adjustable DC rail is more useful than a full enclosed supply.\u003c\/li\u003e\n\u003cli\u003eIf you need a fixed main printer PSU instead of a boost module, see the \u003ca href=\"https:\/\/dfh.fm\/products\/lrs-35-5-35w-single-output-switching-power-supply\"\u003eMean Well LRS-35-5\u003c\/a\u003e or the larger \u003ca href=\"https:\/\/dfh.fm\/products\/mean-well-lrs-350-24\"\u003eMean Well LRS-350-24\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eThis is \u003cstrong\u003enot\u003c\/strong\u003e a buck converter: it will not step voltage down.\u003c\/li\u003e\n\u003cli\u003eDo not treat the headline current as continuous current at every voltage ratio. Higher boost ratios reduce usable output current and may require airflow or heatsinking.\u003c\/li\u003e\n\u003cli\u003eSet and verify the output voltage with a multimeter before connecting sensitive electronics.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":40664286920873,"sku":"1039369461","price":2.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/AD456-2.jpg?v=1623866307"},{"product_id":"omron-1-channel-5v-solid-state-relay-high-level-trigger-dc-ac-pcb-ssr-i5vdc-out-240v-ac-2a","title":"Omron 1 Channel 5V Solid State Relay","description":"\u003cp\u003e\u003cstrong\u003eCompact 5V DC control module for switching small AC loads.\u003c\/strong\u003e This single-channel PCB SSR module is built around an \u003cstrong\u003eOmron G3MB-202P\u003c\/strong\u003e solid-state relay, giving you a logic-level 5V input and a \u003cstrong\u003e100–240VAC\u003c\/strong\u003e output path rated up to \u003cstrong\u003e2A\u003c\/strong\u003e.\u003c\/p\u003e\n\u003ch3\u003eWhy this over a mechanical relay?\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo moving contacts:\u003c\/strong\u003e the phototriac SSR switches silently and avoids contact wear when used within its rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eZero-cross AC switching:\u003c\/strong\u003e the G3MB-202P family is built for clean on\/off control of small AC loads.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSimple wiring:\u003c\/strong\u003e screw terminals on the module handle the AC side, with low-voltage control pins for your controller circuit.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eRelay marking:\u003c\/strong\u003e Omron G3MB-202P\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eControl input:\u003c\/strong\u003e 5V DC nominal; Omron 5V G3MB versions operate over \u003cstrong\u003e4–6VDC\u003c\/strong\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput load:\u003c\/strong\u003e \u003cstrong\u003e100–240VAC\u003c\/strong\u003e, 50\/60Hz, \u003cstrong\u003e0.1–2A\u003c\/strong\u003e general-purpose AC load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSwitching type:\u003c\/strong\u003e zero-cross solid-state relay with input resistor and snubber in the G3MB-202P relay family\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eModule style:\u003c\/strong\u003e one-channel PCB module with screw terminals and mounting holes\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eUse in printer and controller builds\u003c\/h3\u003e\n\u003cp\u003eUse this when a 5V control signal needs to switch a small AC accessory within the relay rating. For clean wiring around the module, pair it with \u003ca href=\"https:\/\/dfh.fm\/products\/wago-221-415\"\u003eWago 221-415 lever connectors\u003c\/a\u003e or heat-resistant \u003ca href=\"https:\/\/dfh.fm\/products\/26awg-stranded-fep-wire-x-10m\"\u003e26AWG stranded FEP wire\u003c\/a\u003e on the low-voltage side.\u003c\/p\u003e\n\u003ch3\u003eGotchas\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eAC output only:\u003c\/strong\u003e this triac SSR is not for DC load switching.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eRespect the 2A limit:\u003c\/strong\u003e do not use it for beds, chamber heaters, or any load above the Omron rating.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains safety applies:\u003c\/strong\u003e enclosure, strain relief, insulation, fusing, and local electrical rules are on the build.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Omron","offers":[{"title":"Default Title","offer_id":41182012047529,"sku":"4518144550","price":8.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/image_0c7bf3e5-7641-43ab-9ff7-365a32187bf4.jpg?v=1630158300"},{"product_id":"mean-well-lrs-350-24","title":"Mean Well LRS-350-24 - 350W 24V 14.6A Power Supply (Voron \/ Klipper)","description":"\u003ch2\u003eMean Well LRS-350-24 — 350W 24V 14.6A enclosed switching PSU\u003c\/h2\u003e\n\u003cp\u003eThis is the workhorse 24V supply for a Voron, RatRig, or any Klipper-driven machine. At 24Vdc and 14.6A (350.4W) it has the headroom to run a mains-class build's full DC side: the bed heater, the control board and steppers, the hotend cartridge, and the part-cooling and electronics fans — all from one brick. 24V is the Voron standard because it lets the bed heater and motors pull current at half the amperage 12V would need, which keeps wire gauge and connector heating sane.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it powers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBed heater\u003c\/strong\u003e — a 24V silicone\/PCB bed heater is the biggest single load; the LRS-350-24's 14.6A continuous rating covers a 200×200 to 300×300 bed plus everything else without sitting at 100%.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eControl board + steppers + hotend\u003c\/strong\u003e — SKR, Octopus, BTT, Spider-class boards take 24V in and regulate down for the MCU and drivers. The hotend heater cartridge runs straight off the 24V rail.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFans and accessories\u003c\/strong\u003e — 24V fans wire directly; 5V accessories (Raspberry Pi \/ SBC) need a separate 5V supply or a buck converter — do not run a Pi off this unit's 24V rail directly.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe wiring and safety reality (read this)\u003c\/h3\u003e\n\u003cp\u003eThis is a \u003cstrong\u003ebare-terminal mains supply\u003c\/strong\u003e. The left-hand screw terminals are live AC: L, N, and earth (⏚). You are responsible for everything upstream of them:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSet the voltage switch first.\u003c\/strong\u003e The 115\/230 slide switch must match your wall voltage. On 230V mains with the switch left at 115, you will destroy the unit instantly. North America = 115; most of Europe\/AU = 230.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse the mains side.\u003c\/strong\u003e Use a fused, switched IEC inlet or an inline fuse on L. The LRS has internal protection on its outputs, not branch-circuit protection on its input.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBond earth.\u003c\/strong\u003e The metal case must connect to mains earth at the ⏚ terminal. This is not optional on a metal-frame printer.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eCover the terminals.\u003c\/strong\u003e Exposed mains screw terminals belong inside an enclosed electronics bay with a terminal cover or shroud — never reachable while powered.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eStrain-relief and ferrule.\u003c\/strong\u003e Ferrule the stranded conductors and strain-relieve both the mains cord and the DC leads so a tug can't back a wire out of a terminal.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're not comfortable terminating mains wiring to screw terminals, this is the part to slow down on or get a second set of eyes for. The DC side (24V V+\/V−) is harmless to handle; the AC side is not.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eThe LRS series is the slim 30mm enclosed family — the volume baseline that most Voron\/Klipper kits are designed around, and the cheapest way into a clean 24V build. It is \u003cem\u003enot\u003c\/em\u003e dead-silent: the 350W tier carries a small thermostatic fan that only spins when the internal sensor crosses ~50°C, so under light printing loads it typically stays off and runs on convection. If you want a guaranteed-fanless or DIN-rail-clean install, that's the HDR (ultra-slim DIN rail) or UHP (slim, PFC, premium) families — they comp higher than this one. For a standard enclosed bay mount at the best price, the LRS-350-24 is the right call.\u003c\/p\u003e\n\n\u003ch3\u003eKey specs\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOutput: 24Vdc, 14.6A, 350.4W\u003c\/li\u003e\n  \u003cli\u003eInput: 90–132 \/ 180–264VAC switch-selectable (85–264VAC), 240–370VDC, 47–63Hz\u003c\/li\u003e\n  \u003cli\u003eEfficiency: 88% typ.\u003c\/li\u003e\n  \u003cli\u003eSize: 215 × 115 × 30 mm\u003c\/li\u003e\n  \u003cli\u003eTemp: −25 to +70°C operating (derate above 50°C)\u003c\/li\u003e\n  \u003cli\u003eProtections: OVP 28.8–33.6V, overload 110–140%, OTP — all hiccup\/auto-recover\u003c\/li\u003e\n  \u003cli\u003eSafety: IEC\/UL 62368-1, overvoltage category III, altitude to 5000m\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn sale as a clearance item — same part, same Mean Well datasheet, lower price.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":43167953846494,"sku":"3481705586","price":33.74,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/LRS-350_DSL.jpg?v=1658721674"},{"product_id":"lrs-35-5-35w-single-output-switching-power-supply","title":"Mean Well LRS-35-5","description":"\u003ch2\u003eMean Well LRS-35-5 — 35W 5V\/7A enclosed switcher\u003c\/h2\u003e\n\u003cp\u003eA compact, fanless 5V supply for the low-voltage side of a printer build. The LRS-35-5 delivers a regulated 5V DC at up to 7A (35W) — enough headroom for a Raspberry Pi running Klipper\/Mainsail plus a few accessories, an MCU board, RGB\/Neopixel strips, small fans, or a panel display. It is not a bed-heater supply; for the 24V printer side (heated bed, hotend, steppers, fans on a Voron or RatRig), use a 24V unit like the LRS-350-24. This is the small companion rail.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it powers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eRaspberry Pi \/ SBC\u003c\/strong\u003e — clean isolated 5V instead of a wall-wart, so the Pi shares the printer's single mains inlet and switch. At 7A there's margin for a Pi 4\/5 plus a camera and a USB device or two.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003e5V MCU and accessory rail\u003c\/strong\u003e — logic boards, screens, LED lighting, chamber\/electronics-bay fans, anything spec'd for 5V.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBench \/ electronics use\u003c\/strong\u003e — adjustable 4.5–5.5V trimmer lets you trim to exactly 5.0V at the load, or nudge slightly to compensate for wire drop.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe form factor — and the honest wiring story\u003c\/h3\u003e\n\u003cp\u003eLRS is Mean Well's compact enclosed switcher: a vented sheet-metal box, no fan, low 30mm profile so it tucks into a printer's electronics bay. Cooling is passive free-air convection, so leave airflow around it and don't bury it under cabling.\u003c\/p\u003e\n\u003cp\u003eConnections are a \u003cstrong\u003ebare screw-terminal block\u003c\/strong\u003e: live, neutral, earth on the input side, +V and −V on the output. There is no IEC inlet, no fuse, and no shroud — that is the installer's job. This unit carries \u003cstrong\u003elive mains on exposed terminals\u003c\/strong\u003e. To wire it safely you must:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003eAdd an \u003cstrong\u003einline fuse\u003c\/strong\u003e on the live input sized for the supply (the LRS-35 datasheet specifies the fuse rating).\u003c\/li\u003e\n  \u003cli\u003eBond the case to \u003cstrong\u003eprotective earth\u003c\/strong\u003e — the earth terminal is not optional on a metal-enclosure mains supply.\u003c\/li\u003e\n  \u003cli\u003eMount it so the terminals are \u003cstrong\u003enot finger-accessible\u003c\/strong\u003e — inside an enclosure or behind a terminal cover.\u003c\/li\u003e\n  \u003cli\u003eUse correctly gauged wire and proper ferrules\/strain relief.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're not comfortable terminating mains, have someone who is do this part. Done right it's a clean, single-inlet install; done carelessly it's a shock and fire hazard.\u003c\/p\u003e\n\n\u003ch3\u003eSpec at a glance\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003eOutput: 5V DC, 7A, 35W — adjustable 4.5–5.5V\u003c\/li\u003e\n  \u003cli\u003eInput: 85–264VAC, 47–63Hz (full 35W across the whole range) \/ 120–373VDC\u003c\/li\u003e\n  \u003cli\u003eEfficiency ~82%, \u0026lt;0.2W no-load draw\u003c\/li\u003e\n  \u003cli\u003eProtections: over-load, over-voltage, short-circuit\u003c\/li\u003e\n  \u003cli\u003eIsolation 3000VAC input-to-output\u003c\/li\u003e\n  \u003cli\u003eFanless convection, −30 to +70°C\u003c\/li\u003e\n  \u003cli\u003e99 × 82 × 30mm, ~210g — screw-terminal block\u003c\/li\u003e\n  \u003cli\u003eMean Well 3-year warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eGenuine Mean Well. On clearance at the price shown.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":43607812210910,"sku":"3505567816","price":11.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/nhgkh.jpg?v=1667274947"},{"product_id":"mean-well-irm-90-48st-power-supply","title":"MEAN WELL IRM-90-48ST Power Supply","description":"\u003ch3\u003eWhat it is\u003c\/h3\u003e\n\u003cp\u003eThe Mean Well IRM-90-48ST is a 90W, 48V encapsulated AC-DC module from the IRM-90 series. Unlike the open-frame LRS brick or a DIN-rail HDR, this is a potted \"green power module\" designed to be built \u003cem\u003einto\u003c\/em\u003e a board or panel: a sealed block with screw terminals, 80-305VAC universal input, and no fan. It sits in the middle of Mean Well's lineup — a step up from the little 5V IRM\/IRM-bricks, below the slim DIN-rail HDR units and the PFC-equipped UHP supplies.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it powers in a printer build\u003c\/h3\u003e\n\u003cp\u003eThis is a 48V unit, so it is for the \u003cstrong\u003e48V rail\u003c\/strong\u003e, not the bed. In a Voron \/ Klipper \/ RatRig build that means feeding stepper drivers and motors that run at 48V (high-torque setups, fast travel moves, CoreXY toolhead steppers) through your control board or a dedicated 48V stepper supply input. It does \u003cem\u003enot\u003c\/em\u003e power a 24V bed heater or 24V electronics, and it does not power a 5V Raspberry Pi. If your printer is a standard 24V build, this is the wrong voltage — match it to a board and steppers actually specified for 48V.\u003c\/p\u003e\n\u003cp\u003eAt 1.88A \/ 90W it is sized for the stepper rail of a single machine, not a whole 350mm bed. Check your driver count and current draw before assuming it covers everything.\u003c\/p\u003e\n\n\u003ch3\u003eThe honest wiring \u0026amp; safety story\u003c\/h3\u003e\n\u003cp\u003eThis module has \u003cstrong\u003ebare screw terminals carrying live mains\u003c\/strong\u003e on the AC side. There is no enclosure, no IEC inlet, no fuse, and no strain relief in the box — that is your job. To wire it safely you need to provide:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eAn \u003cstrong\u003einline fuse\u003c\/strong\u003e on the AC input sized to the module, plus external protection appropriate to your mains.\u003c\/li\u003e\n\u003cli\u003eProper \u003cstrong\u003emains-rated wire\u003c\/strong\u003e, ferrules on stranded conductors, and torque-checked screw terminals.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMechanical protection\u003c\/strong\u003e so nobody can touch the live terminals — this is a potted module, but the screw heads are exposed. Mount it where the AC side is enclosed or covered.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eThis is a \u003cstrong\u003eClass II\u003c\/strong\u003e supply: double-insulated, so there is no protective-earth requirement on the output side the way an earthed metal-case LRS has. That does not make the mains side safe to touch — 80-305VAC is still lethal. If you are not comfortable terminating mains, this is not the part to learn on.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eEncapsulated IRM modules are chosen when you want the supply \u003cstrong\u003eon or beside a PCB\u003c\/strong\u003e, sealed against dust and vibration, running silently with no fan to fail. The potting makes it more rugged than an open LRS and tolerant of the rough environment inside a moving printer. The trade-off versus a DIN-rail HDR is that it does not clip into a control cabinet — it bolts down by its mounting holes and you build the surrounding protection yourself.\u003c\/p\u003e\n\n\u003ch3\u003eVerified spec\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003ePower:\u003c\/strong\u003e 90.24W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 48VDC @ 1.88A (2.07A peak)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e 80-305VAC universal, 47-63Hz (also 113-431VDC)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e ~93%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eNo-load draw:\u003c\/strong\u003e \u0026lt;0.21W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 109 x 52 x 33.5mm (4.29 x 2.05 x 1.32in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e fanless, free-air convection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temp:\u003c\/strong\u003e -30 to +80C (derate above +50C)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections:\u003c\/strong\u003e short circuit, overload, over-voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInsulation:\u003c\/strong\u003e Class II, over-voltage category III\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e UL\/TUV\/EN 62368-1, CB, CE, EAC; 3-year Mean Well warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eGenuine Mean Well. On sale now while stock lasts.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":43668321501406,"sku":"9339449062","price":23.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/products\/e.jpg?v=1668675030"},{"product_id":"mean-well-lrs-350-48","title":"Mean Well LRS-350-48","description":"\u003ch2\u003eMean Well LRS-350-48 — 350W 48V enclosed switching PSU\u003c\/h2\u003e\n\u003cp\u003eThe LRS-350-48 is the 48 volt version of the enclosed switcher most people know as the 24V printer power supply. Same chassis, same 350W class, same screw-terminal block — but it puts out \u003cstrong\u003e48V at 7.3A (350.4W)\u003c\/strong\u003e instead of 24V. You want this one specifically when your build runs a 48V bus, not as a drop-in for a stock 24V machine.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it powers in a 3D printer build\u003c\/h3\u003e\n\u003cp\u003eThis is a single-rail 48V supply. In a printer that fits two cases:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003e48V motion \/ stepper bus.\u003c\/strong\u003e High-torque or high-speed setups (e.g. 48V-fed stepper drivers on a CAN\/Klipper toolhead or a high-flow CoreXY) run the drivers off 48V for more headroom at speed. The LRS-350-48 feeds that rail directly.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eHigh-wattage 48V bed or chamber heater.\u003c\/strong\u003e Running a heater at 48V cuts current roughly in half versus 24V for the same power, which keeps wire gauge and connector heating sane on a large bed. 350W is enough for a moderate heated zone or as a dedicated motion supply alongside a separate bed PSU.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNote the standard Voron wiring is \u003cstrong\u003e24V\u003c\/strong\u003e for both bed heater and electronics — if you are building a stock-spec Voron 2.4 \/ Trident, the 24V LRS-350-24 is the part you want, not this. Buy the 48V only if your control board, drivers, and heater are actually specified for 48V. A 5V supply (for the Raspberry Pi \/ host) is always a separate unit; this PSU does not provide a logic rail.\u003c\/p\u003e\n\n\u003ch3\u003eThe honest wiring and safety reality\u003c\/h3\u003e\n\u003cp\u003eThis is a \u003cstrong\u003ebare-terminal mains power supply\u003c\/strong\u003e, not a sealed appliance. You are wiring 120\/240V line voltage to an open screw-terminal block. That means:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou provide the fuse and the mains wiring.\u003c\/strong\u003e The LRS ships with no inlet fuse, no power switch, no cord. You add an inline fuse \/ fused IEC inlet, strain relief, and a proper earth (FG) connection to the case. Earth ground is not optional on a metal-cased mains supply.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe 115\/230 input is a slide switch, not auto-ranging.\u003c\/strong\u003e Input is \u003cstrong\u003e90~132VAC or 180~264VAC selected by a physical switch\u003c\/strong\u003e. If you leave it on 115 and plug into 230V mains, you will destroy the supply (and possibly worse). Set it to match your wall voltage before first power-on and check it twice.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTerminals should be shrouded or boxed.\u003c\/strong\u003e The L\/N\/FG screw terminals are exposed. In a finished build they belong behind a terminal cover or inside an electronics bay where nothing can touch them live.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you are not comfortable terminating mains wiring and verifying earth continuity, this is the point to stop and get someone who is. This is the same hardware electricians and panel builders use; it is reliable, but it does not babysit you.\u003c\/p\u003e\n\n\u003ch3\u003eCooling and behavior\u003c\/h3\u003e\n\u003cp\u003eThe LRS-350 is \u003cstrong\u003efan-cooled\u003c\/strong\u003e with a thermostatic fan (it stays off at light load and spins up when the internal sensor passes ~50°C), so it is not silent under heavy draw — fine inside a printer enclosure, worth knowing if it sits on a desk. Protections are built in, and on this 48V model all three \u003cstrong\u003elatch off\u003c\/strong\u003e: over-voltage, over-load (110~140% — shuts down and latches off, cycle AC power to recover), and over-temperature. A sustained overload will not auto-recover on the -48; only the separate 150% transient peak (≤1s) uses hiccup mode.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eThe enclosed LRS is the commodity workhorse of the Mean Well line: a 30mm-tall steel case, 215 x 115mm footprint, screw terminals, 89% efficient. It is the cheapest reliable way to get a clean DC rail into a printer bay. It is deliberately \u003cem\u003enot\u003c\/em\u003e a premium part — if you want a DIN-rail slim profile for a tidy control cabinet, that is the HDR series; if you want PFC and higher efficiency for a kit-grade build, that is the UHP series; if you need an encapsulated PCB-mount module, that is IRM. The LRS trades those niceties for price and availability. For most enclosed printer builds, that trade is exactly right.\u003c\/p\u003e\n\n\u003ch3\u003eVerified spec (Mean Well datasheet, LRS-350-SPEC 2025-09-12)\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 48V DC, 7.3A, 350.4W; adjustable 43.2~52.8V\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e 90~132 \/ 180~264VAC switch-selected, 47~63Hz; ~3.4A @ 230VAC, ~6.8A @ 115VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e 89% typ.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e built-in thermostatic fan; working temp -25~+70°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections (-48, all latch off — cycle AC power to recover):\u003c\/strong\u003e OVP (latch), OLP 110~140% (shut down and latches off; cycle AC power to recover), OTP\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize \/ weight:\u003c\/strong\u003e 215 x 115 x 30mm (8.46 x 4.53 x 1.18 in), 0.76kg\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e IEC\/UL 62368-1, BSMI, EAC, BIS; withstand 3.75KVAC I\/P-O\/P\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eOn clearance — the price below reflects a stock-reduction sale, not a change in the part.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779810750686,"sku":"9823588540","price":29.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/mean-well-lrs-350-48.jpg?v=1707756897"},{"product_id":"mean-well-lrs-100-24","title":"Mean Well LRS-100-24","description":"\u003ch2\u003eMean Well LRS-100-24 — 100W 24V enclosed switcher\u003c\/h2\u003e\n\u003cp\u003eA genuine Mean Well LRS-100-24: 24V DC at 4.5A continuous, 108W peak, in the same fanless enclosed package the LRS series is known for. This is the small-wattage tier of the family — the same build and terminals as the LRS-350-24 most people put in a printer, just rated for a fraction of the current.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it actually powers\u003c\/h3\u003e\n\u003cp\u003eAt 108W max, this is \u003cstrong\u003enot\u003c\/strong\u003e the supply to run a printer's heated bed. A Voron, RatRig, or a Klipper-converted Ender pulls most of its current through the bed heater, and on a 24V machine a 235–300mm bed alone wants 200–360W+. That's why printer resellers skip the LRS-100 and start their kits at the LRS-200\/350 — it simply can't source the bed amps. We're honest about that: this unit is undersized for a full 24V printer.\u003c\/p\u003e\n\u003cp\u003eWhere 108W of clean 24V is genuinely useful in a printer-adjacent build:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003eA dedicated rail for 24V \u003cstrong\u003eelectronics and motion\u003c\/strong\u003e — control board, steppers, hotend heater, and fans — on a machine whose bed is heated separately (AC mains bed, SSR + AC silicone heater, or its own larger PSU).\u003c\/li\u003e\n\u003cli\u003e24V \u003cstrong\u003eaccessory and lighting loads\u003c\/strong\u003e: chamber LEDs, exhaust\/nevermore fans, a small toolchanger dock, or a second-stage enclosure.\u003c\/li\u003e\n\u003cli\u003eBench and lab duty — 24V solenoids, small actuators, LED strip, fixturing — anywhere a tidy enclosed 24V brick beats a wall wart.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're building a complete 24V printer and this is your only supply, size up to an LRS-200-24 or LRS-350-24 instead. This one is right when 24V at up to ~4A covers the job.\u003c\/p\u003e\n\n\u003ch3\u003eThe wiring and safety reality\u003c\/h3\u003e\n\u003cp\u003eThis is a bare-terminal mains supply. The input side is line voltage on exposed screw terminals — there is no plug, no fuse, and no enclosure beyond the PSU's own vented case. Installing it means committing to the same standards a printer's mains side demands:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou provide the mains wiring.\u003c\/strong\u003e Line (L), Neutral (N), and Earth (FG) land on the screw terminals. Earth must be connected — the metal case is bonded to it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou provide the fuse.\u003c\/strong\u003e Mean Well builds in over-load, over-voltage, and short-circuit protection on the DC output, but the AC input still needs an external fuse or breaker sized for the supply and an inlet you can isolate.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eThe terminals must be guarded.\u003c\/strong\u003e In an open frame or printer base, the live input terminals need a cover or a terminal guard so nothing can contact them.\u003c\/li\u003e\n\u003cli\u003eIt's \u003cstrong\u003efanless\u003c\/strong\u003e, cooled by convection through the mesh case — give it airflow and don't bury it in a sealed pocket.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eNone of this is exotic; it's standard control-cabinet practice. But if you want a sealed, plug-and-go brick, this isn't it — this is the open, serviceable, screw-terminal form factor that lets you wire it into a printer or cabinet exactly how you want.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eThe LRS enclosed format is the workshop default for a reason: 30mm low profile so it tucks under a printer or along a DIN-equipped panel, a vented metal case that takes abuse, a trim pot to nudge the output, and full-range 85–264VAC input — so there's \u003cstrong\u003eno 115\/230V selector switch to get wrong\u003c\/strong\u003e (the larger LRS-150\/200\/350 units do have that switch; the LRS-100 auto-ranges). It's TUV\/UL-recognized to the current IEC 62368-1 safety standard.\u003c\/p\u003e\n\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 24V DC, 4.5A continuous (100W rated, 108W peak)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e 85–264VAC full range, auto-ranging, 47–63Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e ~90%, \u0026lt;0.3W no-load\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e fanless \/ free-air convection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 129 x 97 x 30mm (5.08 x 3.82 x 1.18 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOperating temp:\u003c\/strong\u003e -30°C to +70°C\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections:\u003c\/strong\u003e over-voltage, overload, short-circuit; output trim pot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety:\u003c\/strong\u003e UL62368-1, TUV EN62368-1, EN60335-1, EN61558\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOn sale as a clearance — the lower-wattage tier moves slower than the bed-sized units, so it's priced to clear, not because there's anything wrong with it. It's the same genuine Mean Well part, just the right size for a smaller 24V job.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779818647774,"sku":"9980652952","price":24.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/mean-well-lrs-100-24.jpg?v=1707757281"},{"product_id":"mean-well-lrs-100-5","title":"Mean Well LRS-100-5","description":"\u003ch2\u003eMean Well LRS-100-5 — 5V 18A (90W) enclosed switching supply\u003c\/h2\u003e\n\u003cp\u003eThis is the small, low-voltage member of Mean Well's \u003cstrong\u003eLRS enclosed metal-case family\u003c\/strong\u003e — the same fanless, screw-terminal switcher line as the LRS-350-24 that powers Voron beds, but configured for \u003cstrong\u003e5V at 18A\u003c\/strong\u003e instead of 24V. In a 3D-printer build this is the supply you reach for when you need a clean, dedicated 5V rail: a Raspberry Pi (or CB1\/CM4) running Klipper, an MCU\/control board's logic supply, LED strips, fans, or other 5V accessories. It is \u003cem\u003enot\u003c\/em\u003e a bed-heater supply — for the heated bed and 24V electronics on a Voron\/RatRig you want a 24V LRS unit. Use this alongside one.\u003c\/p\u003e\n\n\u003ch3\u003eThe real spec (read the part number carefully)\u003c\/h3\u003e\n\u003cp\u003eDespite the \"100\" in the name, the 5V model is rated \u003cstrong\u003e90W, not 100W\u003c\/strong\u003e: 5V x 18A = 90W. Mean Well derates the low-voltage members of the LRS-100 series, so you get \u003cstrong\u003e18A at 5V\u003c\/strong\u003e, not 20A. Plan your load budget around 90W \/ 18A. A Pi 4 under load plus a few 5V fans and an LED strip sits comfortably inside that; this supply has plenty of headroom for typical printer 5V duties.\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 5V DC, 18A, 90W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e 85-264 VAC full range (no voltage-select jumper) or 120-370 VDC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e ~86%\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e free-air convection — fanless and silent, no fan to fail or add noise to the enclosure\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eDimensions:\u003c\/strong\u003e 129 x 97 x 30 mm — the 30 mm low-profile case, easy to tuck into an electronics bay\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections:\u003c\/strong\u003e short circuit, overload, over-voltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput trim:\u003c\/strong\u003e on-board SVR pot for fine 5V adjustment if you need to compensate for wire drop\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSafety\/EMC:\u003c\/strong\u003e UL\/CUL, TUV, CB, CE\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring and safety — this is a bare-terminal mains unit\u003c\/h3\u003e\n\u003cp\u003eBe clear-eyed about what you're buying: the LRS is an \u003cstrong\u003eopen-frame-style enclosed supply with exposed screw terminals\u003c\/strong\u003e, not a sealed wall-wart. The input side carries \u003cstrong\u003elive mains voltage\u003c\/strong\u003e on a screw terminal block. You are responsible for:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eMains wiring to the AC terminals\u003c\/strong\u003e (L, N, earth\/⏚). Earth\/ground \u003cem\u003emust\u003c\/em\u003e be connected to the metal case — this is non-negotiable for safety.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUpstream fusing and a means of disconnect.\u003c\/strong\u003e The LRS has internal short-circuit protection on its output, but it does \u003cem\u003enot\u003c\/em\u003e replace a properly rated mains fuse or breaker on the input. Fuse it.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eStrain relief and a terminal cover.\u003c\/strong\u003e A clear plastic terminal guard is included; fit it. Don't leave live screw terminals exposed inside a printer enclosure.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're not comfortable terminating mains-voltage screw terminals and fusing an AC input, have someone who is do the install. This is standard practice for every LRS\/HDR-class supply — it's the trade-off for the compact, cheap, field-serviceable form factor.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eThe enclosed LRS case is the workhorse choice for printer builds: a vented steel shell, convection cooling (no fan noise), screw terminals you can actually service, and a price that's hard to argue with. The slim 30 mm height makes it easy to mount flat in an electronics compartment. If you instead want a clean DIN-rail control-cabinet install, look at the HDR (ultra-slim DIN) or UHP (slim, PFC, kit-grade) families; for a fully encapsulated PCB-mount module there's the IRM series. For a 3D printer's 5V accessory rail, the LRS-100-5 is the straightforward, proven pick.\u003c\/p\u003e\n\n\u003ch3\u003eOn the price\u003c\/h3\u003e\n\u003cp\u003eThis unit is on clearance. For reference, hobby\/maker resellers list the LRS-100-5 around $27 (ProtoSupplies $26.95); component distributors like Digi-Key are lower at ~$18.60 in single quantity because they don't carry it as a niche printer part. Our clearance price sits between the two — a fair maker-channel price on the way out the door.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779820679390,"sku":null,"price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/LRS-100-5.jpg?v=1707757477"},{"product_id":"mean-well-lrs-150-48","title":"Mean Well LRS-150-48","description":"\u003ch2\u003eMean Well LRS-150-48 — 150W 48V 3.3A enclosed switching PSU\u003c\/h2\u003e\n\u003cp\u003eA fanless, low-profile (1U \/ 30mm) enclosed switching supply from Mean Well's LRS line. 48V DC out, 3.3A, 158.4W maximum. This is the silent, compact brick you bolt into a printer base or control cabinet and forget about.\u003c\/p\u003e\n\n\u003ch3\u003eRead this first: the 48V variant is not the standard printer part\u003c\/h3\u003e\n\u003cp\u003eMost 3D printers — Voron, RatRig, the common Klipper\/Ender builds — run their bed heater, mainboard, and electronics on \u003cstrong\u003e24V\u003c\/strong\u003e. That is the Voron standard. This is the \u003cstrong\u003e48V\u003c\/strong\u003e unit, which is a different animal:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eIt is for high-voltage stepper drivers and industrial loads\u003c\/strong\u003e, not a 24V bed heater. Some builders run steppers at 48V for higher top speed and acceleration headroom (driver permitting — check your driver's max input, e.g. TMC5160-class), and 48V is common in CNC and industrial gear.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eDo not wire a 24V bed heater, 24V hotend, 24V fans, or a 24V mainboard to this.\u003c\/strong\u003e Feeding 48V into 24V-rated hardware will destroy it. If you came here for a standard Voron\/Klipper bed + electronics supply, you want the \u003cstrong\u003eLRS-150-24\u003c\/strong\u003e (or a larger 24V unit sized to your bed), not this part.\u003c\/li\u003e\n  \u003cli\u003eFor powering a Raspberry Pi \/ SBC \/ MCU, you want a \u003cstrong\u003e5V\u003c\/strong\u003e supply (or a buck converter), not this.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eBought with eyes open, the LRS-150-48 is a clean, proven 48V rail. Bought by mistake, it's a fast way to let the magic smoke out of your electronics. We'd rather you know.\u003c\/p\u003e\n\n\u003ch3\u003eThe wiring and safety reality (bare mains terminals)\u003c\/h3\u003e\n\u003cp\u003eThis is an open-frame-style enclosed supply with a \u003cstrong\u003escrew-terminal block\u003c\/strong\u003e, not a sealed wall-wart. Live AC mains lands on exposed screw terminals (Line \/ Neutral \/ Earth) right next to the DC output terminals (+V \/ -V). That means:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eYou are responsible for the mains side.\u003c\/strong\u003e You provide the AC cabling, strain relief, an inline fuse on the Line conductor, and a proper earth (ground) connection to the chassis. None of that is included.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThe terminals are touch-live when powered.\u003c\/strong\u003e Mount it inside an enclosure or behind a guard so nobody can contact the AC terminals. Set the \u003cstrong\u003e115\/230V input switch correctly for your mains before first power-on\u003c\/strong\u003e — wrong position on 230V mains can damage the unit.\u003c\/li\u003e\n  \u003cli\u003eIf you're not comfortable terminating mains AC, fusing it, and earthing the chassis, this is not the right product for you — buy a sealed external brick instead. There's no shame in it.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eThe LRS series is the go-to for printer and cabinet builds because it's \u003cstrong\u003efanless\u003c\/strong\u003e (convection cooled — no fan to fail, no fan noise) and \u003cstrong\u003ethin\u003c\/strong\u003e (30mm tall), so it tucks into a printer base or DIN-adjacent control area without a tower-sized footprint. ~90% efficient, wide 85-264VAC input, and the usual Mean Well protection set: over-voltage, overload, over-temperature, and short-circuit. UL\/TUV\/CB\/CE listed, 3-year warranty from Mean Well.\u003c\/p\u003e\n\n\u003ch3\u003eHonest spec notes\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFull output across the input range:\u003c\/strong\u003e the full 3.3A \/ 158.4W is available over the entire 85-264VAC input, on both the 115V and 230V switch settings. (On 115V mains the AC input current is roughly double that on 230V — normal P=VI behavior — but the DC output is not derated.)\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eThermal derating:\u003c\/strong\u003e rated to +70C ambient, but you lose available current above roughly +50C. Convection cooling means airflow and orientation matter inside a hot enclosure.\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eSingle output:\u003c\/strong\u003e one 48V rail, adjustable a few percent (43.2-52.8V) via the onboard trim pot.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eOn clearance — solid Mean Well silicon at a clearance price. Just make sure 48V is actually the rail your build needs before you buy.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779830247646,"sku":"5447237924","price":12.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/l_rs-150-48.jpg?v=1707758103"},{"product_id":"mean-well-hdr-150-48","title":"Mean Well HDR-150-48","description":"\u003cp\u003eMean Well \u003cstrong\u003eHDR-150-48\u003c\/strong\u003e — an ultra-slim, fanless DIN-rail supply putting out \u003cstrong\u003e48V at up to 153.6W\u003c\/strong\u003e. It's the clean-cabinet way to feed a 48V 3D-printer build: motion power for high-voltage stepper drivers (good torque headroom for fast Voron\/RatRig CoreXY toolheads) and, on 48V machines, the bed\/electronics rail.\u003c\/p\u003e\n\n\u003ch3\u003eWhat it powers\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e48V motion power\u003c\/strong\u003e for stepper drivers on boards that accept a separate higher-voltage VM input (many Klipper\/RatRig\/CoreXY setups run drivers at 48V for snappier acceleration while logic stays at the board's regulated 5V\/3.3V).\u003c\/li\u003e\n  \u003cli\u003eOn a 48V-native build, the \u003cstrong\u003ebed heater and main electronics rail\u003c\/strong\u003e — though note the 24V Voron standard runs bed + electronics off 24V; if you're following the stock Voron spec, you want a 24V unit, not this. This is for builds that have deliberately gone 48V.\u003c\/li\u003e\n  \u003cli\u003ePair a small \u003cstrong\u003e5V supply\u003c\/strong\u003e separately for the Raspberry Pi \/ host MCU and accessories — this unit is 48V only.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eHonest spec\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003e48V DC\u003c\/strong\u003e, \u003cstrong\u003e3.2A \/ 153.6W\u003c\/strong\u003e on ~230VAC mains; \u003cstrong\u003e2.72A \/ 130.6W\u003c\/strong\u003e on 115VAC. The rated current depends on your mains voltage — on US 120V you do not get the full 3.2A, you get ~2.72A. Size accordingly.\u003c\/li\u003e\n  \u003cli\u003eUniversal \u003cstrong\u003e85-264VAC\u003c\/strong\u003e input, ~\u003cstrong\u003e90.5% efficient\u003c\/strong\u003e, \u003cstrong\u003efanless\u003c\/strong\u003e (silent, nothing to clog with print dust).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eTS-35 DIN-rail\u003c\/strong\u003e mount, step-shape 6SU body (105 x 90 x 54.5 mm). It clips onto a rail in your electronics bay for a tidy, serviceable install instead of an enclosed brick screwed to a panel.\u003c\/li\u003e\n  \u003cli\u003eOver-load, over-voltage protection. Output trim pot on board (roughly 43.2-55.2V).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eNo active PFC\u003c\/strong\u003e and \u003cstrong\u003eno conformal coating.\u003c\/strong\u003e If you specifically want PFC for efficiency\/utility-friendliness, look at the UHP series instead.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eWiring \u0026amp; safety — read this\u003c\/h3\u003e\n\u003cp\u003eThis is a \u003cstrong\u003ebare-terminal mains-voltage\u003c\/strong\u003e supply. AC line, neutral, and earth land on exposed screw terminals — there is no enclosed plug or strain-relieved cord. You are responsible for the mains side:\u003c\/p\u003e\n\u003cul\u003e\n  \u003cli\u003e\n\u003cstrong\u003eFuse and switch the AC input\u003c\/strong\u003e upstream (inline fuse holder or fused IEC inlet sized for this load).\u003c\/li\u003e\n  \u003cli\u003e\n\u003cstrong\u003eBond earth (PE)\u003c\/strong\u003e to the ground terminal — non-negotiable on a metal-framed printer.\u003c\/li\u003e\n  \u003cli\u003eUse a \u003cstrong\u003efinger-safe terminal cover\u003c\/strong\u003e or keep the supply inside a closed electronics bay. DIN-rail end covers\/terminal guards are cheap; use them.\u003c\/li\u003e\n  \u003cli\u003eFerrules on stranded conductors, correct wire gauge for the current, torque the terminals.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003cp\u003eIf you're not comfortable wiring mains to screw terminals, this is not the right part for you. Done correctly it's a clean, reliable, industrial install.\u003c\/p\u003e\n\n\u003ch3\u003eWhy this form factor\u003c\/h3\u003e\n\u003cp\u003eHDR is Mean Well's slim DIN-rail line: it clips onto a rail next to your control board and breakers for a cabinet-style layout, where an enclosed LRS brick is meant to be bolted flat to a panel. For 48V specifically, the 3D-printer niche more commonly reaches for the enclosed \u003cstrong\u003eLRS-200-48\u003c\/strong\u003e (cheaper) or the PFC-equipped slim \u003cstrong\u003eUHP-200-48\u003c\/strong\u003e (premium kit-grade). The HDR-150-48 sits between them: premium build and the cleanest rail-mount install, but it is not the part the 48V Voron\/Klipper crowd has standardized on. Buy it because you want a fanless DIN-rail 48V supply in a control cabinet, not because a build guide told you to.\u003c\/p\u003e\n\n\u003cp\u003e\u003cem\u003eOn sale \/ clearance pricing — same Mean Well part, marked down.\u003c\/em\u003e\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779841093854,"sku":"5114251115","price":35.49,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/hdr-150-48.jpg?v=1707758785"},{"product_id":"mean-well-hdr-150-24","title":"Mean Well HDR-150-24","description":"\u003ch2\u003eMean Well HDR-150-24 — 150W 24V ultra-slim DIN-rail supply\u003c\/h2\u003e\n\u003cp\u003eA genuine Mean Well HDR-150-24: an ultra-slim, fanless DIN-rail power supply that puts out a regulated 24VDC rail from any mains input. This is the same 24V that a Voron, RatRig, or 24V Ender\/Klipper build runs on — it feeds the bed heater and the control electronics (board, steppers, fans, hotend heater). The HDR is the DIN-rail form factor: instead of the usual open enclosed brick screwed to a frame rail, it clips onto standard TS-35 DIN rail for a clean control-cabinet or electronics-bay layout.\u003c\/p\u003e\n\n\u003ch3\u003eHonest power math — read this before you buy\u003c\/h3\u003e\n\u003cp\u003eThe \"150W\" rating is at 230VAC. On US 115V mains this unit \u003cstrong\u003ederates to 127.4W (24V @ 5.31A)\u003c\/strong\u003e — that is a hard spec on the Mean Well datasheet, not a fudge factor. 127W is enough to run the electronics and a small-to-medium 24V bed heater, but if you are sizing the supply primarily to drive a large 24V silicone bed heater on US mains, do the wattage math first: a 300x300 24V bed pad can pull close to or past this. For a big bed on 120V most builders step up to a 200-350W class supply (or run the bed off mains AC through an SSR). Use this where ~127W on 120V actually covers your load, or anywhere you have 230V available, where you get the full 150W.\u003c\/p\u003e\n\n\u003ch3\u003eWhy the DIN-rail form factor\u003c\/h3\u003e\n\u003cp\u003eThe HDR is \"step shape\" ultra-slim — a narrow 105 x 90 x 54.5 mm body that snaps onto TS-35\/7.5 or TS-35\/15 rail. It is the tidy option: rail-mount it next to your control board, breakers, and SSR instead of standing off an enclosed brick. Fanless convection cooling means it is silent and has no fan to clog or fail. Output is trimmable 21.6-29V if you need to nudge the rail. Versus the enclosed LRS bricks we also sell, the HDR is the premium, cabinet-grade install — you pay for the slim rail-mount body, not for more watts.\u003c\/p\u003e\n\n\u003ch3\u003eWiring and safety — bare mains terminals\u003c\/h3\u003e\n\u003cp\u003eThis is a bare-terminal industrial supply, not a plug-and-play adapter. Mains lands on screw terminals (L \/ N \/ earth-via-case is Class II, so chassis bonding rules differ from a 3-terminal Class I unit — read the datasheet). \u003cstrong\u003eYou\u003c\/strong\u003e are responsible for an inline mains fuse, a strain-relieved and properly gauged AC cord, an IEC inlet or hardwired entry, and keeping fingers off live terminals. There is no fuse, switch, or cord in the box. If you are not comfortable wiring line-voltage AC to screw terminals and fusing it correctly, have someone who is do it. A terminal cover \/ finger guard is strongly recommended on any exposed-terminal supply that lives in a printer enclosure.\u003c\/p\u003e\n\n\u003ch3\u003eSpecs\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput:\u003c\/strong\u003e 24VDC, 6.25A, 150W at 230VAC — 5.31A, 127.4W at 115VAC\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eInput:\u003c\/strong\u003e 85-264VAC universal, 47-63Hz\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEfficiency:\u003c\/strong\u003e ~90% (90.5% typ)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eOutput adjust:\u003c\/strong\u003e 21.6-29V trimpot\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eCooling:\u003c\/strong\u003e fanless \/ convection\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eProtections:\u003c\/strong\u003e short-circuit, overload, overvoltage\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMounting:\u003c\/strong\u003e TS-35\/7.5 or TS-35\/15 DIN rail\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eConnections:\u003c\/strong\u003e screw terminals (AC in \/ DC out)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eSize:\u003c\/strong\u003e 105 x 90 x 54.5 mm (4.13 x 3.54 x 2.15 in)\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eTemp:\u003c\/strong\u003e -30 to +70C (with derating), no-load draw \u0026lt;0.3W\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eListings:\u003c\/strong\u003e UL\/IEC 62368-1, UL 61010; 3-year Mean Well warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eGenuine Mean Well. On sale as part of a clearance — same part, same spec, lower price.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779847188702,"sku":"7615355297","price":32.24,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/mean-well-hdr-150.jpg?v=1707759009"},{"product_id":"mean-well-hdr-60-5","title":"Mean Well HDR-60-5","description":"\u003ch2\u003eMean Well HDR-60-5 — 5V 6.5A (32.5W) DIN-rail PSU\u003c\/h2\u003e\n\u003cp\u003eAn ultra-slim DIN-rail supply that turns mains into a clean 5V\/6.5A rail. In a 3D-printer build this is the \u003cstrong\u003elow-voltage \/ logic\u003c\/strong\u003e supply, not the main motion supply. It runs a Raspberry Pi (Klipper host), an MCU board, a small display, LED strips, fans, or other 5V accessories that you want on a dedicated rail instead of stealing current from the toolboard or a USB brick.\u003c\/p\u003e\n\u003cp\u003eIt does \u003cstrong\u003enot\u003c\/strong\u003e power a 24V bed heater or 24V steppers — for that you want a 24V unit (the Voron standard). Pair this with your 24V main supply when you want the Pi and electronics on their own isolated, properly-fused source.\u003c\/p\u003e\n\n\u003ch3\u003eWhy the HDR form factor\u003c\/h3\u003e\n\u003cp\u003eHDR is Mean Well's ultra-slim \"step-shape\" DIN-rail line. It clips onto standard 35mm DIN rail (TS-35\/7.5 or TS-35\/15), so if your printer's electronics bay or control cabinet is built around a rail, this drops in clean next to your terminal blocks and breakers — no standoffs, no open-frame chassis to mount. The 52.5mm-wide (3SU) body is narrow, fanless, and silent. Compared to an open-frame LRS brick, you pay a bit more for the cabinet-grade packaging and the tidy rail mount.\u003c\/p\u003e\n\n\u003ch3\u003eThe honest wiring \/ safety reality\u003c\/h3\u003e\n\u003cp\u003eThis is a bare-terminal mains unit. Live AC (L\/N) lands on exposed screw terminals on one end; 5V DC comes off screw terminals on the other. That means:\u003c\/p\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eYou are responsible for the mains side.\u003c\/strong\u003e It needs an appropriately-rated inline fuse and proper mains wiring (correctly-gauged, strain-relieved, ferrules on stranded conductors). Nothing here is \"plug and play.\"\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eClass II \/ no earth pin.\u003c\/strong\u003e The HDR series is double-insulated — there is no protective-earth (PE) terminal on the unit itself. Earth your chassis\/enclosure separately per your build's grounding scheme; do not assume the PSU bonds your frame.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eMount it where terminals can't be touched.\u003c\/strong\u003e DIN-rail supplies live inside an enclosure for a reason. Keep the AC terminals covered\/inaccessible in the finished build.\u003c\/li\u003e\n\u003cli\u003eIf you're not comfortable terminating mains, stop and get someone who is. The DC side is harmless; the AC side will hurt you.\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eSpec at a glance\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eOutput: 5V DC, 6.5A, 32.5W\u003c\/li\u003e\n\u003cli\u003eInput: 85-264VAC universal, 47-63Hz\u003c\/li\u003e\n\u003cli\u003eEfficiency ~85% (typ.), fanless free-air cooling\u003c\/li\u003e\n\u003cli\u003eOperating temp -30C to +70C\u003c\/li\u003e\n\u003cli\u003eOutput adjustable ~5.0-5.5V (up to ~+10%) via onboard trimmer\u003c\/li\u003e\n\u003cli\u003eShort-circuit \/ over-current (hiccup) \/ over-voltage protection\u003c\/li\u003e\n\u003cli\u003eMounts on TS-35 DIN rail; 52.5 x 90 x 54.5mm (W x H x D); ~0.19kg\u003c\/li\u003e\n\u003cli\u003e3-year Mean Well warranty\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cp\u003eThis unit is on sale as part of a clearance — same genuine Mean Well part, lower price.\u003c\/p\u003e","brand":"MEAN WELL USA Inc.","offers":[{"title":"Default Title","offer_id":44779849908446,"sku":"7977873823","price":18.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/hdr-60-5.jpg?v=1707759483"},{"product_id":"ac-power-cord-3-prong-iec-c13-power-supply-lead-extension-cable","title":"AC Power Cord 3 Prong IEC C13 Power Supply Lead Extension Cable","description":"\u003cp\u003e\u003cstrong\u003eGrounded AC power lead for printers, PSUs, and C14 power inlets.\u003c\/strong\u003e This black 3-prong cord connects a standard North American NEMA 5-15 wall outlet to equipment with an IEC 60320 C14 inlet using an IEC C13 female connector.\u003c\/p\u003e\n\u003ch3\u003eWhy this cord\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eNEMA 5-15P to IEC C13:\u003c\/strong\u003e the common wall-to-equipment cord used by desktop power supplies, monitors, PCs, and many 3D-printer power-entry modules.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGrounded 3-conductor layout:\u003c\/strong\u003e appropriate for grounded AC equipment that expects a C13 power lead.\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eGood fit for printer electronics builds:\u003c\/strong\u003e pairs with C14 inlet\/switch modules and enclosed AC\/DC supplies such as the \u003ca href=\"https:\/\/dfh.fm\/products\/iec320-c14-inlet-power-socket-with-red-rocker-switch\"\u003eIEC320 C14 red rocker inlet\u003c\/a\u003e, \u003ca href=\"https:\/\/dfh.fm\/products\/iec320-c14-inlet-power-socket-with-green-rocker-switch\"\u003eIEC320 C14 green rocker inlet\u003c\/a\u003e, and \u003ca href=\"https:\/\/dfh.fm\/products\/mean-well-lrs-350-24\"\u003eMean Well LRS-350-24 power supply\u003c\/a\u003e.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eSpecifications\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003e\n\u003cstrong\u003eWall plug:\u003c\/strong\u003e NEMA 5-15P, 3-prong grounded male plug\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eEquipment end:\u003c\/strong\u003e IEC 60320 C13 female connector for C14 inlets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eColor:\u003c\/strong\u003e black\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eUse case:\u003c\/strong\u003e AC input lead for 3D-printer electronics, bench equipment, PCs, monitors, and power supplies with C14 inlets\u003c\/li\u003e\n\u003cli\u003e\n\u003cstrong\u003eLength \/ wire gauge:\u003c\/strong\u003e not specified on the source listing; verify fit before ordering if you need an exact cable length\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFitment\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eUseful for \u003ca href=\"https:\/\/dfh.fm\/products\/lh-stinger-starter-kit\"\u003eLH Stinger\u003c\/a\u003e and similar printer builds using a C14 power-entry module.\u003c\/li\u003e\n\u003cli\u003eWorks with devices that have an IEC C14 inlet. Match the cord rating to the equipment draw and local electrical requirements.\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eWhat it is not\u003c\/h3\u003e\n\u003cul\u003e\n\u003cli\u003eNot a C13-to-C14 PDU jumper cord.\u003c\/li\u003e\n\u003cli\u003eNot a locking, angled, hospital-grade, or international-plug power cord.\u003c\/li\u003e\n\u003cli\u003eNot a substitute for verifying your printer wiring, fuse, switch, and PSU input requirements.\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Generic","offers":[{"title":"Default Title","offer_id":44779966169310,"sku":"9059018092","price":4.99,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0556\/9767\/0313\/files\/USA-US-AC-Power-Cord-3-Prong-American-IEC-C13-Power-Supply-Lead-Extension-Cable.jpg?v=1707762857"}],"url":"https:\/\/formosissima.myshopify.com\/collections\/power-supplies.oembed?page=2","provider":"dfh.fm","version":"1.0","type":"link"}