{
 "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": "din-rail-mcb-circuit-breaker-din-43880",
 "name": "DIN rail circuit breaker (MCB) dimensions, DIN 43880: 17.5 mm per pole, 18 mm module pitch, heights and depths by size",
 "kind": "standard",
 "category": "Electronics",
 "group": "Wiring & connectors",
 "year": null,
 "question": "What are the dimensions of a DIN rail miniature circuit breaker (MCB): width per pole, height, depth and the DIN 43880 module sizes?",
 "tags": [
  "mcb",
  "circuit breaker",
  "din rail",
  "din 43880",
  "module",
  "distribution board",
  "17.5 mm",
  "electrical"
 ],
 "aliases": [
  "mcb dimensions",
  "din rail breaker width",
  "17.5 mm module",
  "circuit breaker 18 mm wide",
  "din 43880 dimensions",
  "consumer unit module width",
  "mcb 1p height 80 mm",
  "mcb depth 70 mm",
  "reiheneinbaugeräte maße",
  "teilungseinheit 17,5",
  "din rail enclosure modules",
  "mcb 3d model size",
  "breaker panel cutout din rail"
 ],
 "overall_mm": {
  "length": null,
  "width": null,
  "height": null
 },
 "official_cad": false,
 "xem_status": "not-scanned",
 "les": false,
 "free_files": 0,
 "url": "https://xemstudio.com/objects/din-rail-mcb-circuit-breaker-din-43880/",
 "sheet_txt": "https://xemstudio.com/objects/din-rail-mcb-circuit-breaker-din-43880/sheet.txt",
 "sheet": {
  "basis": "DIN 43880 figures as quoted by Phoenix Contact (the standard is paywalled), with ABB, Hager, Rittal, Schroff and Soyter data for real devices; numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "DIN 43880 ('Reiheneinbaugeräte', built-in equipment) fixes the envelope that circuit breakers (MCBs), RCDs, switches, sockets and meters share on a 35 mm DIN rail: a module pitch of 18 mm with devices 17.5 mm wide (+0.5 / −0), so one-pole MCBs are one module, two-pole two, and so on. Distribution boards are specified in rows of modules ('4 × 12 TE' = four rows of 12). The standard text is paywalled; the figures below are what Phoenix Contact's housing guide quotes from it, plus maker data sheets.",
   "Heights and depths are given per installation size (1, 2, 3): h2 / h3 max 45 / 55 / 75 mm and t2 max 55 / 70 / 92.5 mm as Phoenix prints them. How those two tables map to a real breaker is not spelled out in the sources: ABB labels an S201 as 'DIN 43880 installation size 1' with a 69 mm depth, which is above the quoted size-1 depth, so the size labels evidently apply to the height and depth classes separately. Check the standard if you rely on a size.",
   "Real breaker sizes vary by maker: ABB S201 88 mm tall, Hager NBN 83 mm; both 17.5 mm per pole and 69 or 70 mm deep. Pole widths for 2, 3, 4 poles are n × 17.5 (35 / 52.5 / 70); Soyter's enclosure table lists 35, 52 and 70 mm, Schroff's 3 × 16 A module is 53.5 mm.",
   "DIN 43880 describes the envelope, not the DIN rail itself: the rail is TS35 × 7.5 or × 15 (IEC / EN 60715), on the DIN rail page. The 45 mm window and the front cut-out of a cover are not given as numbers in any source read, so no cut-out file is drawn.",
   "Not covered: breaker curves, poles' internal geometry, busbar combs, 63 A and DIN 43880 size-3 devices' real dimensions (only the standard's limits above)."
  ],
  "table": {
   "columns": [
    "item",
    "mm",
    "source and note"
   ],
   "rows": [
    [
     "module pitch (1 TE, 'division unit')",
     "18",
     "Phoenix Contact quoting DIN 43880 (also Rittal: 'à 18 mm')"
    ],
    [
     "module width, actual device",
     "17.5 (+0.5 / −0)",
     "Phoenix Contact quoting DIN 43880; ProZ quotes the standard's text 'Teilungseinheit = 17,5 mm'"
    ],
    [
     "1-pole MCB width",
     "17.5",
     "ABB S201P-C1 and Hager NBN150A (1 module)"
    ],
    [
     "1-pole breaker width, Schroff module",
     "17.7",
     "Schroff 1 × 16 A (3 × 16 A: 53.5)"
    ],
    [
     "2 / 3 / 4 modules wide (enclosure lengths)",
     "35 / 52 / 70",
     "Soyter enclosures (listed values; 17.5 × n)"
    ],
    [
     "minimum clearance between neighbouring devices",
     "18",
     "Phoenix Contact (DIN 43880)"
    ],
    [
     "device slot, 12 modules",
     "216 × 46",
     "Phoenix Contact: 216 mm (12 × 18) × 46 mm"
    ],
    [
     "height h2 / h3 max, size 1 / 2 / 3",
     "45 / 55 / 75",
     "Phoenix Contact, DIN 43880 table 1"
    ],
    [
     "depth t2 max, size 1 / 2 / 3",
     "55 / 70 / 92.5",
     "Phoenix Contact, DIN 43880 table 2"
    ],
    [
     "t4 minimum",
     "52",
     "Phoenix Contact"
    ],
    [
     "distance rail upper edge to protection cover lower edge",
     "44 (required)",
     "Phoenix Contact (Fig. 13 / 14)"
    ],
    [
     "maximum t for housing parts in the area reachable by non-qualified persons",
     "70",
     "Phoenix Contact"
    ],
    [
     "row spacing on a distribution board",
     "150 (+ 25 mm steps for large cables)",
     "ProZ quoting the German text"
    ],
    [
     "real 1-pole MCB, ABB S201P-C1: width × height × depth",
     "17.5 × 88 × 69",
     "ABB; labelled net width / height / depth; 'installation size 1'; rail TH35-7.5 or TH35-15"
    ],
    [
     "real 1-pole MCB, Hager NBN150A: width × height × depth",
     "17.5 × 83 × 70",
     "Hager"
    ]
   ]
  }
 },
 "sheet_text": "DIN rail circuit breaker (MCB) dimensions, DIN 43880: 17.5 mm per pole, 18 mm module pitch, heights and depths by size — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/din-rail-mcb-circuit-breaker-din-43880/  (sheet CC BY 4.0)\nBasis: DIN 43880 figures as quoted by Phoenix Contact (the standard is paywalled), with ABB, Hager, Rittal, Schroff and Soyter data for real devices; numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- DIN 43880 ('Reiheneinbaugeräte', built-in equipment) fixes the envelope that circuit breakers (MCBs), RCDs, switches, sockets and meters share on a 35 mm DIN rail: a module pitch of 18 mm with devices 17.5 mm wide (+0.5 / −0), so one-pole MCBs are one module, two-pole two, and so on. Distribution boards are specified in rows of modules ('4 × 12 TE' = four rows of 12). The standard text is paywalled; the figures below are what Phoenix Contact's housing guide quotes from it, plus maker data sheets.\n- Heights and depths are given per installation size (1, 2, 3): h2 / h3 max 45 / 55 / 75 mm and t2 max 55 / 70 / 92.5 mm as Phoenix prints them. How those two tables map to a real breaker is not spelled out in the sources: ABB labels an S201 as 'DIN 43880 installation size 1' with a 69 mm depth, which is above the quoted size-1 depth, so the size labels evidently apply to the height and depth classes separately. Check the standard if you rely on a size.\n- Real breaker sizes vary by maker: ABB S201 88 mm tall, Hager NBN 83 mm; both 17.5 mm per pole and 69 or 70 mm deep. Pole widths for 2, 3, 4 poles are n × 17.5 (35 / 52.5 / 70); Soyter's enclosure table lists 35, 52 and 70 mm, Schroff's 3 × 16 A module is 53.5 mm.\n- DIN 43880 describes the envelope, not the DIN rail itself: the rail is TS35 × 7.5 or × 15 (IEC / EN 60715), on the DIN rail page. The 45 mm window and the front cut-out of a cover are not given as numbers in any source read, so no cut-out file is drawn.\n- Not covered: breaker curves, poles' internal geometry, busbar combs, 63 A and DIN 43880 size-3 devices' real dimensions (only the standard's limits above).\n\nitem  mm  source and note\nmodule pitch (1 TE, 'division unit')  18  Phoenix Contact quoting DIN 43880 (also Rittal: 'à 18 mm')\nmodule width, actual device  17.5 (+0.5 / −0)  Phoenix Contact quoting DIN 43880; ProZ quotes the standard's text 'Teilungseinheit = 17,5 mm'\n1-pole MCB width  17.5  ABB S201P-C1 and Hager NBN150A (1 module)\n1-pole breaker width, Schroff module  17.7  Schroff 1 × 16 A (3 × 16 A: 53.5)\n2 / 3 / 4 modules wide (enclosure lengths)  35 / 52 / 70  Soyter enclosures (listed values; 17.5 × n)\nminimum clearance between neighbouring devices  18  Phoenix Contact (DIN 43880)\ndevice slot, 12 modules  216 × 46  Phoenix Contact: 216 mm (12 × 18) × 46 mm\nheight h2 / h3 max, size 1 / 2 / 3  45 / 55 / 75  Phoenix Contact, DIN 43880 table 1\ndepth t2 max, size 1 / 2 / 3  55 / 70 / 92.5  Phoenix Contact, DIN 43880 table 2\nt4 minimum  52  Phoenix Contact\ndistance rail upper edge to protection cover lower edge  44 (required)  Phoenix Contact (Fig. 13 / 14)\nmaximum t for housing parts in the area reachable by non-qualified persons  70  Phoenix Contact\nrow spacing on a distribution board  150 (+ 25 mm steps for large cables)  ProZ quoting the German text\nreal 1-pole MCB, ABB S201P-C1: width × height × depth  17.5 × 88 × 69  ABB; labelled net width / height / depth; 'installation size 1'; rail TH35-7.5 or TH35-15\nreal 1-pole MCB, Hager NBN150A: width × height × depth  17.5 × 83 × 70  Hager\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Phoenix Contact: Technical principles of electronics housings for DIN rail: DIN 43880 section: module pitch 18 mm, device width 17.5 +0.5 -0, heights and depths by size, device slot — web — Publisher's page; dimensions are facts — https://dam-mdc.phoenixcontact.com/asset/156443151564/dfa8378cd4361e3a695bd1be65bd338a/1082999_EN_HQ_HOUSING_Basics_LoRes.pdf\n- ProZ (quoting the standard's German text): 'Die Norm legt eine Teilungseinheit (TE, auch Modul genannt) = 17,5 mm fest'; row spacing 150 mm — web — Publisher's page; dimensions are facts — https://mlt.proz.com/kudoz/german-to-polish/computers-systems-networks/4355347-teilungseinheit.html\n- ABB (manualmachine copy): S201P-C1 technical data: width 17.5, height 88, depth 69, TH35-7.5 and TH35-15 rail, 'acc. to DIN 43880 1 installation size' — web — Publisher's page; dimensions are facts — https://manualmachine.com/abb/s201pc1/7630340-technical-data\n- Hager: NBN150A MCB 1P: width 17.5 (1 module), height 83, depth 70 — web — Publisher's page; dimensions are facts — https://hager.com/intl-en/products/information/nbn150a-mcb-1p-10ka-15ka-b-50a-1m\n- Rittal: DK 7480.035 mounting rail: DIN 43880 installation devices sizes 1 to 3, 'max. Teilungseinheiten a 18 mm' 22 — web — Publisher's page; dimensions are facts — https://www.rittal.com/pdf-creator/variant/at-de/7480035\n- Schroff (Mercateo copy): Power distribution modules to DIN 43880: widths 17.7 (1 x 16 A breaker), 53.5 (3 x 16 A), 46, 44 mm — web — Publisher's page; dimensions are facts — https://static.mercateo.com/cd/6996b3ad28464d939bc17e037ed63c99/pdf/schroff-3_34_eng.pdf\n- Soyter: Modular DIN rail enclosure to DIN 43880: module 17.50 mm (standard 18), enclosure lengths 35 / 52 / 70 / 105 / 157 / 210 / 260 for 2 / 3 / 4 / 6 / 9 / 12 / 15 modules — web — Publisher's page; dimensions are facts — https://soyter.pl/en/menu/modular-din-rail-enclosure-in-accordance-with-din-43880-832.html\n- DIN Media: DIN 43880 Installation equipment: built-in dimensions (standard, paywalled; the title only) — web — Publisher's page; dimensions are facts — https://dinmedia.de/en/standard/din-43880/1406097\n\nNo true-size file yet: the published figures do not fix the whole shape; a measured scan is planned.\nAPI: https://xemstudio.com/api/geometry?object=din-rail-mcb-circuit-breaker-din-43880\n",
 "sources": [
  {
   "publisher": "Phoenix Contact",
   "title": "Technical principles of electronics housings for DIN rail: DIN 43880 section: module pitch 18 mm, device width 17.5 +0.5 -0, heights and depths by size, device slot",
   "url": "https://dam-mdc.phoenixcontact.com/asset/156443151564/dfa8378cd4361e3a695bd1be65bd338a/1082999_EN_HQ_HOUSING_Basics_LoRes.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ProZ (quoting the standard's German text)",
   "title": "'Die Norm legt eine Teilungseinheit (TE, auch Modul genannt) = 17,5 mm fest'; row spacing 150 mm",
   "url": "https://mlt.proz.com/kudoz/german-to-polish/computers-systems-networks/4355347-teilungseinheit.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "ABB (manualmachine copy)",
   "title": "S201P-C1 technical data: width 17.5, height 88, depth 69, TH35-7.5 and TH35-15 rail, 'acc. to DIN 43880 1 installation size'",
   "url": "https://manualmachine.com/abb/s201pc1/7630340-technical-data",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Hager",
   "title": "NBN150A MCB 1P: width 17.5 (1 module), height 83, depth 70",
   "url": "https://hager.com/intl-en/products/information/nbn150a-mcb-1p-10ka-15ka-b-50a-1m",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Rittal",
   "title": "DK 7480.035 mounting rail: DIN 43880 installation devices sizes 1 to 3, 'max. Teilungseinheiten a 18 mm' 22",
   "url": "https://www.rittal.com/pdf-creator/variant/at-de/7480035",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Schroff (Mercateo copy)",
   "title": "Power distribution modules to DIN 43880: widths 17.7 (1 x 16 A breaker), 53.5 (3 x 16 A), 46, 44 mm",
   "url": "https://static.mercateo.com/cd/6996b3ad28464d939bc17e037ed63c99/pdf/schroff-3_34_eng.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Soyter",
   "title": "Modular DIN rail enclosure to DIN 43880: module 17.50 mm (standard 18), enclosure lengths 35 / 52 / 70 / 105 / 157 / 210 / 260 for 2 / 3 / 4 / 6 / 9 / 12 / 15 modules",
   "url": "https://soyter.pl/en/menu/modular-din-rail-enclosure-in-accordance-with-din-43880-832.html",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "DIN Media",
   "title": "DIN 43880 Installation equipment: built-in dimensions (standard, paywalled; the title only)",
   "url": "https://dinmedia.de/en/standard/din-43880/1406097",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "din-rail-35mm",
  "terminal-blocks",
  "panel-cutouts",
  "wago-221-lever-connectors",
  "glass-cartridge-fuses-5x20-and-6-3x32",
  "cable-glands-metric-thread"
 ],
 "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": "module width",
   "exact": "17.5 mm per pole on an 18 mm pitch (+0.5 / −0 device width)",
   "mates": "enclosure or panel slot sized on the 18 mm pitch per module",
   "fit": "designed",
   "files": "all"
  },
  {
   "feature": "DIN rail",
   "exact": "TH35-7.5 or TH35-15 (IEC 60715)",
   "mates": "35 mm top-hat rail on din-rail-35mm",
   "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 wide is a one-pole MCB?",
   "a": "17.5 mm (one module); the DIN 43880 module pitch is 18 mm. A 2-pole is 35 mm, 3-pole 52.5 mm and 4-pole 70 mm."
  },
  {
   "q": "How tall and deep is a DIN rail breaker?",
   "a": "ABB S201: 88 × 69 mm; Hager NBN: 83 × 70 mm (height × depth). DIN 43880 limits the depth to 55 / 70 / 92.5 mm by size."
  },
  {
   "q": "What rail do MCBs sit on?",
   "a": "A 35 mm top-hat rail, 7.5 mm (TH35-7.5) or 15 mm deep (TH35-15), IEC 60715."
  },
  {
   "q": "Is a module 17.5 or 18 mm?",
   "a": "Both: the pitch is 18 mm, the device width is 17.5 mm (+0.5 / −0), so devices have a small gap."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/din-rail-mcb-circuit-breaker-din-43880/index.md"
}