{
 "version": "2026-10-20",
 "license": "Dimension sheets: CC BY 4.0. Standard and published-size files: CC BY 4.0. Xem Studio's own designs (files_license = Xem Studio Design License): free to use and sell things from, not to redistribute as files — https://xemstudio.com/license/. Other publishers' files: their own license, linked beside them.",
 "slug": "meanwell-lrs-350-12",
 "name": "MEAN WELL LRS-350-12 power supply (case 207A): 215 × 115 × 30 case and M4 mounting holes",
 "kind": "modern",
 "category": "Electronic components",
 "group": "Modules, sensors & displays",
 "year": null,
 "question": "What are the MEAN WELL LRS-350-12 dimensions and mounting-hole positions?",
 "tags": [
  "mean well lrs-350",
  "lrs-350-12",
  "12v power supply",
  "enclosed power supply",
  "psu mounting holes",
  "350w power supply"
 ],
 "aliases": [
  "LRS-350-12",
  "MEAN WELL LRS-350",
  "Meanwell LRS-350-12",
  "LRS-350 case 207A",
  "LRS-350 dimensions",
  "12 V 29 A power supply",
  "LRS-350-24"
 ],
 "overall_mm": {
  "length": 215,
  "width": 115,
  "height": 30
 },
 "official_cad": false,
 "xem_status": "free-files",
 "les": false,
 "free_files": 1,
 "url": "https://xemstudio.com/objects/meanwell-lrs-350-12/",
 "sheet_txt": "https://xemstudio.com/objects/meanwell-lrs-350-12/sheet.txt",
 "sheet": {
  "basis": "MEAN WELL LRS-350 series specification, Mechanical Specification for case No. 207A.",
  "overall_mm": {
   "length": 215,
   "width": 115,
   "height": 30
  },
  "notes": [
   "Datum: case centre; terminal-block end at −x, bottom at 0. Case 215.0 × 115.0 × 30.0 (case 207A, shared by the LRS-350 series).",
   "Bottom: 4 × M4 threaded holes, 3 mm thread length, on a 150.0 × 50.0 pattern centred on the case (32.5 from each end and each long edge).",
   "Sides: 2 × M4 threaded holes in each long side, 5 mm thread length, 150.0 apart, 12.5 above the bottom. All M4 holes are modelled at the Ø3.3 tap-drill size.",
   "The 9-position screw terminal (AC/L, AC/N, FG, 3 × −V, 3 × +V) sits recessed in the top of the −x end; the fan sits under a flush grille in the top, centred 47.45 from the +x end and 36.7 from the +y edge; air enters through the top.",
   "Not modelled: terminal block, fan grille and vent slots (all inside or flush with the case), optional mounting brackets.",
   "Dimensions are exact nominal (true size), no tolerance added."
  ],
  "table": {
   "columns": [
    "holes",
    "face",
    "positions from case centre (mm)",
    "thread"
   ],
   "rows": [
    [
     "4",
     "bottom",
     "x ±75.0, y ±25.0",
     "M4, 3 mm deep"
    ],
    [
     "2",
     "−y side",
     "x ±75.0, 12.5 above bottom",
     "M4, 5 mm deep"
    ],
    [
     "2",
     "+y side",
     "x ±75.0, 12.5 above bottom",
     "M4, 5 mm deep"
    ]
   ]
  }
 },
 "sheet_text": "MEAN WELL LRS-350-12 power supply (case 207A): 215 × 115 × 30 case and M4 mounting holes — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/meanwell-lrs-350-12/  (sheet CC BY 4.0)\nBasis: MEAN WELL LRS-350 series specification, Mechanical Specification for case No. 207A.\nCatalog version: 2026-10-20\n\nOverall (mm): length 215.0, width 115.0, height 30.0\n- Datum: case centre; terminal-block end at −x, bottom at 0. Case 215.0 × 115.0 × 30.0 (case 207A, shared by the LRS-350 series).\n- Bottom: 4 × M4 threaded holes, 3 mm thread length, on a 150.0 × 50.0 pattern centred on the case (32.5 from each end and each long edge).\n- Sides: 2 × M4 threaded holes in each long side, 5 mm thread length, 150.0 apart, 12.5 above the bottom. All M4 holes are modelled at the Ø3.3 tap-drill size.\n- The 9-position screw terminal (AC/L, AC/N, FG, 3 × −V, 3 × +V) sits recessed in the top of the −x end; the fan sits under a flush grille in the top, centred 47.45 from the +x end and 36.7 from the +y edge; air enters through the top.\n- Not modelled: terminal block, fan grille and vent slots (all inside or flush with the case), optional mounting brackets.\n- Dimensions are exact nominal (true size), no tolerance added.\n\nholes  face  positions from case centre (mm)  thread\n4  bottom  x ±75.0, y ±25.0  M4, 3 mm deep\n2  −y side  x ±75.0, 12.5 above bottom  M4, 5 mm deep\n2  +y side  x ±75.0, 12.5 above bottom  M4, 5 mm deep\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- MEAN WELL: LRS-350 series specification — web — Publisher's page; dimensions are facts — https://www.meanwell.com/Upload/PDF/LRS-350/LRS-350-SPEC.PDF\n- MEAN WELL: LRS-350 product datasheet — web — Publisher's page; dimensions are facts — https://www.meanwell.com/productPdf.aspx?i=459\n\nFree files (CC BY 4.0, Xem Studio; STEP + STL, 1 parts): https://xemstudio.com/files/hardware/meanwell-lrs-350-12/index.json\nAPI: https://xemstudio.com/api/geometry?object=meanwell-lrs-350-12\n",
 "sources": [
  {
   "publisher": "MEAN WELL",
   "title": "LRS-350 series specification",
   "url": "https://www.meanwell.com/Upload/PDF/LRS-350/LRS-350-SPEC.PDF",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "MEAN WELL",
   "title": "LRS-350 product datasheet",
   "url": "https://www.meanwell.com/productPdf.aspx?i=459",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
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  "status": "free-files",
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  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "socket-head-cap-screws-metric",
  "machine-screws-metric-pan-cheese-csk",
  "metric-wire-sizes-iec-60228-mm2-awg",
  "axial-fan-frames",
  "thread-reference-tap-drills-clearance"
 ],
 "fits": [],
 "dimensions": "exact (nominal, no tolerance added)",
 "dimension_rule": "All geometry on Xem Studio is exact (nominal, true size) with no tolerance added. Where a part meets another part, the object lists its mating features (feature, exact size, what it mates with, fit class: press, slide, run, socket, clamp or designed). Apply your process's allowance to those features only; 'designed' gaps are part of the design and stay as drawn. Typical accuracy by process and ISO 286 fits: https://xemstudio.com/tolerances/",
 "mating": [
  {
   "feature": "bottom M4 holes",
   "exact": "4 × M4 on 150.0 × 50.0, 3 mm thread",
   "mates": "M4 screws through the mounting plate; screw may enter at most 3 mm",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "side M4 holes",
   "exact": "2 × M4 per side, 150.0 apart, 12.5 up, 5 mm thread",
   "mates": "M4 screws through an L-bracket or side wall; at most 5 mm into the case",
   "fit": "designed",
   "files": "all"
  }
 ],
 "fit_classes": {
  "press": "stays put: pin, tube, bearing or magnet held by interference. ISO 286 equivalent: H7/p6 (locational interference) or tighter.",
  "slide": "assembles by hand and is held by a grub, pinch or clamp: shaft in a hub, rod in a socket, spigot in a bore. ISO 286 equivalent: H7/g6 or H7/h6.",
  "run": "turns or slides in use: pin in a link, rod through a guide. ISO 286 equivalent: H8/f7 (close running).",
  "socket": "large sliding fit: syringe barrel, sleeve, bobbin in a bore. ISO 286 equivalent: H9/d9 (free running) or looser.",
  "clamp": "split part that closes on the mating part with screws: make it at size.",
  "designed": "a gap that is part of the design (piston fit option, displacer gap, air gap): do not change."
 },
 "faq": [
  {
   "q": "How big is the LRS-350-12?",
   "a": "215 × 115 × 30 mm (case 207A)."
  },
  {
   "q": "What is the bottom mounting-hole pattern?",
   "a": "Four M4 holes on 150 × 50 mm, centred on the case; thread length 3 mm, so the screw may enter at most 3 mm."
  },
  {
   "q": "Can it be side-mounted?",
   "a": "Yes: two M4 holes in each long side, 150 mm apart and 12.5 mm above the bottom, 5 mm thread length."
  }
 ],
 "files_license": null,
 "offers": [
  {
   "file": "meanwell-lrs-350-12",
   "formats": [
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   "license": "CC BY 4.0 (Xem Studio)",
   "step": "https://xemstudio.com/files/hardware/meanwell-lrs-350-12/meanwell-lrs-350-12.step",
   "stl": "https://xemstudio.com/files/hardware/meanwell-lrs-350-12/meanwell-lrs-350-12.stl",
   "note": "MEAN WELL LRS-350-12 power supply (case 207A): 215 × 115 × 30 case and M4 mounting holes"
  }
 ],
 "markdown": "https://xemstudio.com/objects/meanwell-lrs-350-12/index.md"
}