{"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","url":"https:\/\/formosissima.myshopify.com\/products\/mean-well-lrs-100-24","provider":"dfh.fm","version":"1.0","type":"link"}