{
 "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-terminal-blocks-phoenix-ut-st-uk",
 "name": "DIN-rail terminal blocks Phoenix UT, ST and UK: width per pole 5.2 / 6.2 / 8.2 / 10.2 mm, height on the rail, wire range, strip length",
 "kind": "standard",
 "category": "Electronic components",
 "group": "Connectors",
 "year": null,
 "question": "How wide is a DIN-rail terminal block per pole, and what wire does a UT 2,5, UT 4, ST 2,5 or UK 5 N take?",
 "tags": [
  "din rail terminal block",
  "phoenix contact",
  "ut 2,5",
  "ut 4",
  "ut 6",
  "ut 10",
  "st 2,5",
  "uk 5 n",
  "feed-through terminal",
  "screw clamp",
  "spring cage",
  "35 mm rail"
 ],
 "aliases": [
  "ut 2,5 terminal block width",
  "phoenix ut 4 dimensions",
  "st 2,5 terminal block width 5.2 mm",
  "din rail terminal block dimensions",
  "terminal block width per pole",
  "uk 5 n width 6.2 mm",
  "ut 10 terminal height ns 35",
  "phoenix contact 3044076 dimensions",
  "3031212 st 2,5 height",
  "terminal block wire range 2.5 mm2 4 mm2 6 mm2 10 mm2",
  "din rail terminal block 5.2 mm",
  "ut 6 8.2 mm",
  "end cover width terminal block"
 ],
 "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-terminal-blocks-phoenix-ut-st-uk/",
 "sheet_txt": "https://xemstudio.com/objects/din-rail-terminal-blocks-phoenix-ut-st-uk/sheet.txt",
 "sheet": {
  "basis": "Phoenix Contact datasheets for nine feed-through blocks (UT, ST and UK families) as hosted by Farnell, Chipdip, corys.co.nz and phoenixcontact.com; numbers only",
  "overall_mm": {
   "length": null,
   "width": null,
   "height": null
  },
  "notes": [
   "Width per pole read from the sheets: 5.2 mm (2.5 mm2 class: UT 2,5, ST 2,5), 6.2 mm (4 mm2 class: UT 4, ST 4, UK 5 N), 8.2 mm (6 mm2 class: UT 6, ST 6) and 10.2 mm (10 mm2 class: UT 10, UK 10 N). A block's end cover adds 2.2 mm (UT / ST) or 1.8 mm (UK). A row of n blocks measures n x width plus one end cover.",
   "Heights are shown on the rail the sheet names: NS 35/7,5 (7.5 mm deep DIN rail) and NS 35/15 (15 mm). The UT sheets also print a single 'height 46.9' without a rail; the UK 5 N sheet prints one height (42.5) and its depth on each rail. The columns follow each sheet; 'length' is what Phoenix prints as length (47.7 for UT, 42.5 for UK 10 N) and is not the same measurement across families. Rail dimensions are on din-rail-35mm.",
   "Wire range, strip length and nominal current / voltage are as printed in the sheet's connection data. The UT 6 BU and UT 10 sheets list the end cover as the D-UT 2,5/10 cover (2.2 mm). The ST 2,5 sheet prints the flexible AWG maximum as 14 in one table and 12 in another; both are noted. Ratings are the sheet's nominal values, not a design limit for your installation.",
   "Not read: UT 16, ST 10, ST 16, UK 2,5 N, UK 6 N, UK 16 N and the other variants (double-level, PE, fused). The 'width per pole' sequence above is read from the nine families listed; it is not asserted for blocks not read.",
   "No file: the block outline (latch, foot, screw access) is not published as numbers in the sheets. Phoenix publishes per-part STEP on its product pages (linked, not copied)."
  ],
  "table": {
   "columns": [
    "type",
    "order no.",
    "width per pole (mm)",
    "end cover width (mm)",
    "height on NS 35/7,5 (mm)",
    "height on NS 35/15 (mm)",
    "length / height / depth as printed (mm)",
    "solid mm2 (AWG)",
    "flexible mm2",
    "strip (mm)",
    "nominal current / voltage"
   ],
   "rows": [
    [
     "UT 2,5 (screw)",
     "3044076",
     "5.2",
     "2.2",
     "47.5",
     "55",
     "length 47.7; height 46.9",
     "0.14-4 (26-12)",
     "0.14-4",
     "9",
     "24 A / 1000 V"
    ],
    [
     "UT 4 (screw)",
     "3044102",
     "6.2",
     "2.2",
     "47.5",
     "55",
     "length 47.7; height 46.9",
     "0.14-6 (26-10)",
     "0.14-6",
     "9",
     "32 A (4 mm2) / 1000 V"
    ],
    [
     "UT 6 BU (screw)",
     "3044144",
     "8.2",
     "2.2 (D-UT 2,5/10 cover)",
     "47.5",
     "55",
     "length 47.7",
     "0.2-10 (24-8)",
     "0.2-10 stranded",
     "10",
     "41 A / 1000 V"
    ],
    [
     "UT 10 (screw)",
     "3044160",
     "10.2",
     "2.2 (D-UT 2,5/10 cover)",
     "47.5",
     "55",
     "length 47.7",
     "0.5-16 (20-6)",
     "0.5-16 stranded",
     "10",
     "57 A / 1000 V"
    ],
    [
     "ST 2,5 (spring-cage)",
     "3031212",
     "5.2",
     "2.2",
     "36.5",
     "44",
     "length 48.5",
     "0.08-4 (28-12)",
     "0.08-2.5 (28-14; one table prints 12)",
     "8-10",
     "24 A (2.5 mm2) / 800 V"
    ],
    [
     "ST 4 (spring-cage)",
     "3031364",
     "6.2",
     "2.2",
     "36.5",
     "44",
     "length 56",
     "0.08-6 (28-10)",
     "0.08-4",
     "8-10",
     "32 A / 800 V"
    ],
    [
     "ST 6 (spring-cage)",
     "3031487",
     "8.2",
     "2.2 (D-ST 6 cover)",
     "43.5",
     "51",
     "length 69.5",
     "0.2-10 (24-8)",
     "0.2-6 stranded",
     "12",
     "41 A / 1000 V"
    ],
    [
     "UK 5 N RD (screw)",
     "3026696",
     "6.2",
     "1.8",
     "— (one height)",
     "—",
     "height 42.5; depth 47 (NS 35/7,5), 54.5 (NS 35/15), 52 (NS 32)",
     "0.2-6 (24-10)",
     "0.2-4 (24-12)",
     "8",
     "32 A / 800 V"
    ],
    [
     "UK 10 N BU (screw)",
     "3005086",
     "10.2",
     "1.8",
     "47.3",
     "54.8",
     "length 42.5",
     "0.5-16 (20-6)",
     "0.5-10 (20-8)",
     "10",
     "57 A / 800 V"
    ]
   ]
  }
 },
 "sheet_text": "DIN-rail terminal blocks Phoenix UT, ST and UK: width per pole 5.2 / 6.2 / 8.2 / 10.2 mm, height on the rail, wire range, strip length — dimension sheet\nSource: Xem Studio, https://xemstudio.com/objects/din-rail-terminal-blocks-phoenix-ut-st-uk/  (sheet CC BY 4.0)\nBasis: Phoenix Contact datasheets for nine feed-through blocks (UT, ST and UK families) as hosted by Farnell, Chipdip, corys.co.nz and phoenixcontact.com; numbers only\nCatalog version: 2026-10-20\n\nSizes: see table below\n- Width per pole read from the sheets: 5.2 mm (2.5 mm2 class: UT 2,5, ST 2,5), 6.2 mm (4 mm2 class: UT 4, ST 4, UK 5 N), 8.2 mm (6 mm2 class: UT 6, ST 6) and 10.2 mm (10 mm2 class: UT 10, UK 10 N). A block's end cover adds 2.2 mm (UT / ST) or 1.8 mm (UK). A row of n blocks measures n x width plus one end cover.\n- Heights are shown on the rail the sheet names: NS 35/7,5 (7.5 mm deep DIN rail) and NS 35/15 (15 mm). The UT sheets also print a single 'height 46.9' without a rail; the UK 5 N sheet prints one height (42.5) and its depth on each rail. The columns follow each sheet; 'length' is what Phoenix prints as length (47.7 for UT, 42.5 for UK 10 N) and is not the same measurement across families. Rail dimensions are on din-rail-35mm.\n- Wire range, strip length and nominal current / voltage are as printed in the sheet's connection data. The UT 6 BU and UT 10 sheets list the end cover as the D-UT 2,5/10 cover (2.2 mm). The ST 2,5 sheet prints the flexible AWG maximum as 14 in one table and 12 in another; both are noted. Ratings are the sheet's nominal values, not a design limit for your installation.\n- Not read: UT 16, ST 10, ST 16, UK 2,5 N, UK 6 N, UK 16 N and the other variants (double-level, PE, fused). The 'width per pole' sequence above is read from the nine families listed; it is not asserted for blocks not read.\n- No file: the block outline (latch, foot, screw access) is not published as numbers in the sheets. Phoenix publishes per-part STEP on its product pages (linked, not copied).\n\ntype  order no.  width per pole (mm)  end cover width (mm)  height on NS 35/7,5 (mm)  height on NS 35/15 (mm)  length / height / depth as printed (mm)  solid mm2 (AWG)  flexible mm2  strip (mm)  nominal current / voltage\nUT 2,5 (screw)  3044076  5.2  2.2  47.5  55  length 47.7; height 46.9  0.14-4 (26-12)  0.14-4  9  24 A / 1000 V\nUT 4 (screw)  3044102  6.2  2.2  47.5  55  length 47.7; height 46.9  0.14-6 (26-10)  0.14-6  9  32 A (4 mm2) / 1000 V\nUT 6 BU (screw)  3044144  8.2  2.2 (D-UT 2,5/10 cover)  47.5  55  length 47.7  0.2-10 (24-8)  0.2-10 stranded  10  41 A / 1000 V\nUT 10 (screw)  3044160  10.2  2.2 (D-UT 2,5/10 cover)  47.5  55  length 47.7  0.5-16 (20-6)  0.5-16 stranded  10  57 A / 1000 V\nST 2,5 (spring-cage)  3031212  5.2  2.2  36.5  44  length 48.5  0.08-4 (28-12)  0.08-2.5 (28-14; one table prints 12)  8-10  24 A (2.5 mm2) / 800 V\nST 4 (spring-cage)  3031364  6.2  2.2  36.5  44  length 56  0.08-6 (28-10)  0.08-4  8-10  32 A / 800 V\nST 6 (spring-cage)  3031487  8.2  2.2 (D-ST 6 cover)  43.5  51  length 69.5  0.2-10 (24-8)  0.2-6 stranded  12  41 A / 1000 V\nUK 5 N RD (screw)  3026696  6.2  1.8  — (one height)  —  height 42.5; depth 47 (NS 35/7,5), 54.5 (NS 35/15), 52 (NS 32)  0.2-6 (24-10)  0.2-4 (24-12)  8  32 A / 800 V\nUK 10 N BU (screw)  3005086  10.2  1.8  47.3  54.8  length 42.5  0.5-16 (20-6)  0.5-10 (20-8)  10  57 A / 800 V\n\nFiles elsewhere (not hosted by Xem Studio; license as stated by the publisher):\n- Phoenix Contact (Farnell copy of the UT 2,5 3044076 sheet): UT 2,5 feed-through terminal block: width 5.2 mm, end cover 2.2 mm, length 47.7, height 46.9 / NS 35/7,5 47.5 / NS 35/15 55 mm — web — Publisher's page; dimensions are facts — https://www.farnell.com/datasheets/3541626.pdf\n- Phoenix Contact (Chipdip copy of the UT 4 3044102 sheet): UT 4 feed-through terminal block: width 6.2 mm — web — Publisher's page; dimensions are facts — https://static.chipdip.ru/lib/785/DOC031785562.pdf\n- Phoenix Contact (Farnell copy, UT 6 BU 3044144): UT 6 BU: width 8.2 mm, 0.2 to 10 mm2 — web — Publisher's page; dimensions are facts — https://www.farnell.com/datasheets/1514093.pdf\n- Phoenix Contact (Farnell copy, UT 10 3044160): UT 10: width 10.2 mm, 0.5 to 16 mm2 — web — Publisher's page; dimensions are facts — https://www.farnell.com/datasheets/1514094.pdf\n- Phoenix Contact (corys.co.nz copy of the ST 2,5 3031212 sheet): ST 2,5 spring-cage feed-through: width 5.2 mm, length 48.5, heights 36.5 / 44 mm — web — Publisher's page; dimensions are facts — https://corys.co.nz/img/products/PIMraw/01367793/0000942648_Datasheet.pdf\n- Phoenix Contact (Chipdip copy of the ST 4 3031364 sheet): ST 4: width 6.2 mm, length 56, heights 36.5 / 44 mm — web — Publisher's page; dimensions are facts — https://static.chipdip.ru/lib/785/DOC031785510.pdf\n- Phoenix Contact (Chipdip copy of the ST 6 3031487 sheet): ST 6: width 8.2 mm, length 69.5, heights 43.5 / 51 mm — web — Publisher's page; dimensions are facts — https://static.chipdip.ru/lib/451/DOC011451783.pdf\n- Phoenix Contact (UK 5 N RD 3026696 sheet): UK 5 N RD: width 6.2 mm, end cover 1.8 mm, height 42.5, depth 47 / 54.5 / 52 mm — web — Publisher's page; dimensions are facts — https://www.phoenixcontact.com/us/products/3026696/pdf\n- Phoenix Contact (Chipdip copy of the UK 10 N BU 3005086 sheet): UK 10 N BU: width 10.2 mm, end cover 1.8 mm, length 42.5, heights 47.3 / 54.8 mm — web — Publisher's page; dimensions are facts — https://static.chipdip.ru/lib/785/DOC031785442.pdf\n- Phoenix Contact: Phoenix Contact terminal block product pages carry per-part CAD (example page: UT 2,5-MTD) — STEP, PDF — Phoenix Contact site terms [verify license at link] — https://www.phoenixcontact.com/en-de/products/feed-through-terminal-block-ut-25-mtd-3064085\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-terminal-blocks-phoenix-ut-st-uk\n",
 "sources": [
  {
   "publisher": "Phoenix Contact (Farnell copy of the UT 2,5 3044076 sheet)",
   "title": "UT 2,5 feed-through terminal block: width 5.2 mm, end cover 2.2 mm, length 47.7, height 46.9 / NS 35/7,5 47.5 / NS 35/15 55 mm",
   "url": "https://www.farnell.com/datasheets/3541626.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Chipdip copy of the UT 4 3044102 sheet)",
   "title": "UT 4 feed-through terminal block: width 6.2 mm",
   "url": "https://static.chipdip.ru/lib/785/DOC031785562.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Farnell copy, UT 6 BU 3044144)",
   "title": "UT 6 BU: width 8.2 mm, 0.2 to 10 mm2",
   "url": "https://www.farnell.com/datasheets/1514093.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Farnell copy, UT 10 3044160)",
   "title": "UT 10: width 10.2 mm, 0.5 to 16 mm2",
   "url": "https://www.farnell.com/datasheets/1514094.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (corys.co.nz copy of the ST 2,5 3031212 sheet)",
   "title": "ST 2,5 spring-cage feed-through: width 5.2 mm, length 48.5, heights 36.5 / 44 mm",
   "url": "https://corys.co.nz/img/products/PIMraw/01367793/0000942648_Datasheet.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Chipdip copy of the ST 4 3031364 sheet)",
   "title": "ST 4: width 6.2 mm, length 56, heights 36.5 / 44 mm",
   "url": "https://static.chipdip.ru/lib/785/DOC031785510.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Chipdip copy of the ST 6 3031487 sheet)",
   "title": "ST 6: width 8.2 mm, length 69.5, heights 43.5 / 51 mm",
   "url": "https://static.chipdip.ru/lib/451/DOC011451783.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (UK 5 N RD 3026696 sheet)",
   "title": "UK 5 N RD: width 6.2 mm, end cover 1.8 mm, height 42.5, depth 47 / 54.5 / 52 mm",
   "url": "https://www.phoenixcontact.com/us/products/3026696/pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact (Chipdip copy of the UK 10 N BU 3005086 sheet)",
   "title": "UK 10 N BU: width 10.2 mm, end cover 1.8 mm, length 42.5, heights 47.3 / 54.8 mm",
   "url": "https://static.chipdip.ru/lib/785/DOC031785442.pdf",
   "formats": [
    "web"
   ],
   "license": "Publisher's page; dimensions are facts",
   "license_verified": true,
   "hosted": false
  },
  {
   "publisher": "Phoenix Contact",
   "title": "Phoenix Contact terminal block product pages carry per-part CAD (example page: UT 2,5-MTD)",
   "url": "https://www.phoenixcontact.com/en-de/products/feed-through-terminal-block-ut-25-mtd-3064085",
   "formats": [
    "STEP",
    "PDF"
   ],
   "license": "Phoenix Contact site terms",
   "license_verified": false,
   "hosted": false
  }
 ],
 "xem": {
  "status": "not-scanned",
  "sheet_free": true,
  "mesh_price_usd": null,
  "step_price_usd": null,
  "tolerance_mm": null
 },
 "related": [
  "terminal-blocks",
  "pluggable-terminal-blocks",
  "din-rail-35mm",
  "din-rail-mcb-circuit-breaker-din-43880",
  "wire-end-ferrules-din-46228",
  "wago-221-lever-connectors",
  "awg-wire-gauge-table-astm-b258"
 ],
 "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": [],
 "faq": [
  {
   "q": "How wide is a UT 2,5 terminal block?",
   "a": "5.2 mm per pole, end cover 2.2 mm, 0.14 to 4 mm2 (26 to 12 AWG), strip 9 mm (Phoenix 3044076)."
  },
  {
   "q": "What is the width of a 6 mm2 DIN-rail terminal block?",
   "a": "8.2 mm for UT 6 and ST 6 (Phoenix 3044144 and 3031487), wire 0.2 to 10 mm2 solid."
  },
  {
   "q": "How tall is a spring-cage ST 2,5 on a DIN rail?",
   "a": "36.5 mm on NS 35/7,5 and 44 mm on NS 35/15 (Phoenix 3031212)."
  }
 ],
 "files_license": null,
 "offers": [],
 "markdown": "https://xemstudio.com/objects/din-rail-terminal-blocks-phoenix-ut-st-uk/index.md"
}