# Wire-end ferrules, DIN 46228 (end sleeves): length, collar diameter and colour code, 0.5 to 50 mm², French and German colours

> What are the dimensions and colour codes of DIN 46228 wire-end ferrules (bootlace ferrules) by wire cross-section, and how do the French and German colours differ?

- Category: Electronics › Wiring & connectors
- Kind: Standard part
- Basis: GAM catalogue table (one length per size), checked against Weidmüller H10,0/22D, Otto Fischer and Klauke data sheets; colour codes from stex24, cross-checked with Phoenix Contact; no CAD files
- Page: https://xemstudio.com/objects/wire-end-ferrules-din-46228/ · JSON: https://xemstudio.com/api/geometry?object=wire-end-ferrules-din-46228 · Plain text: https://xemstudio.com/objects/wire-end-ferrules-din-46228/sheet.txt
- License: dimension sheet CC BY 4.0 (Xem Studio); files CC BY 4.0 or their publisher's license
- Use in every chat: add https://xemstudio.com/mcp as a connector (https://xemstudio.com/use-with-ai/)

**Exact dimensions.** Every file is drawn at true size with no tolerance added. The holes and pins that meet another part are listed below under Mating features, with the fit each joint needs; open those by your process's clearance before making the part.

## Notes

- Wire-end ferrules (end sleeves, bootlace ferrules, Aderendhülsen) are crimped on the stripped end of a stranded wire so a screw or spring clamp does not splay the strands. DIN 46228 part 1 is the plain (uninsulated) sleeve, part 4 the sleeve with a plastic collar. The table is one maker's catalogue (GAM, 'insulated to DIN 46228 part 4, except #' rows): one length per cross-section plus the twin (two-wire) sleeves. Lengths come in several steps per size, so L1 / L2 / D1 / D2 change with the length you pick.
- Column meanings as Weidmüller labels them on its H10,0/22D sheet: L1 overall length, L2 length of the metal sleeve, D1 'contact surface diameter', D2 collar diameter, S1 metal wall, S2 plastic collar wall. The Weidmüller 10 mm² sleeve (L1 22, L2 12, D1 4.5, D2 7.6, S1 0.2, S2 0.4) matches the GAM row exactly. Otto Fischer's 1 mm² DIN 46228-4 sleeve is the same type in a longer step: l1 18, l2 12, d1 1.4, d2 3, s1 0.15, s2 0.25 (the GAM row is the 14 / 8 step: D1 1.4 agrees, D2 is 3.4 vs 3.0). Klauke's 0.75 mm² grey sleeve: L 16, pin length 10 (DIN 46228/4). Neither sheet says whether D1 is a bore or an outside diameter, so no solid is drawn.
- Colour codes by cross-section: the DIN 46228-4 / German / French columns come from stex24's table and agree with Phoenix Contact's colour table (DIN 46228-4, UL 486-F, NF C 63-023 and a special German code) for every size from 0.5 to 50 mm². Colour alone does not identify the size (DIN grey is both 0.75 and 4 mm²; red is 1, 10 and 35 mm²). Outside the standard: 0.14 mm² grey, 0.25 light blue, 0.34 turquoise (DIN-style practice); 70 mm² yellow, 95 mm² red, 120 mm² blue (DIN 46628 as stex24 lists it).
- Uninsulated DIN 46228-1 sleeves (GLW catalogue): 1.5 and 2.5 mm² in lengths l = 7, 8, 10, 12, 15*, 18, 20* mm (* not to the standard), d1 1.7 and 2.2 mm, wall s 0.15 mm; the d1 and s values match the insulated rows. The GLW copy's d2 column did not align cleanly, so it is not used.
- Rows marked # (FTR1-8#, FTR1.5-8#): the maker's footnote says the insulated ones are DIN 46228-4 'except #'; the page does not say what differs. AWG pairings are the maker's (a 1 mm² sleeve is listed against 18 AWG).
- Left out: files (the sleeve bore / outside-diameter ambiguity above), crimp-die codes, other makers' length steps. The maker pages are linked below for CAD and full tables.

## Mating features (exact size; open press / slide / run / socket by your process clearance, leave designed and clamp as drawn)

| feature | exact | mates with | fit | files |
|---|---|---|---|---|
| sleeve outside / collar D2 | 4.2 mm (2.5 mm²) to 15 mm (50 mm²) in the table | terminal-block clamp opening (the terminal maker's drawing governs; ferrule length L2 must fit the clamp) | designed | all |

## Sizes

| cross-section, mm² | AWG (maker) | DIN 46228-4 colour | French colour | German colour | example part (GAM) | L1 overall, mm | L2 sleeve, mm | D1, mm | S1 wall, mm | D2 collar, mm |
|---|---|---|---|---|---|---|---|---|---|---|
| 0.5 | 20 | white | white | orange | FTR0.5-8 | 14 | 8 | 1 | 0.15 | 2.6 |
| 0.75 | 18 | grey | blue | white | DWE0.75-8 | 14 | 8 | 1.2 | 0.15 | 2.8 |
| 1 | 18 | red | red | yellow | FTR1-8# | 14 | 8 | 1.4 | 0.15 | 3.4 |
| 1.5 | 16 | black | black | red | FTR1.5-8# | 14 | 8 | 1.7 | 0.15 | 3.8 |
| 2.5 | 14 | blue | grey | blue | GWE2.5-8 | 14 | 8 | 2.2 | 0.15 | 4.2 |
| 4 | 12 | grey | orange | grey | GWE4-10 | 17 | 10 | 2.8 | 0.2 | 4.8 |
| 6 | 10 | yellow | green | black | DWE6-12 | 20 | 12 | 3.5 | 0.2 | 6.3 |
| 10 | 8 | red | brown | ivory | DWE10-12 | 22 | 12 | 4.5 | 0.2 | 7.6 |
| 16 | 6 | blue | ivory | green | DWE16-12 | 24 | 12 | 5.8 | 0.2 | 8.8 |
| 25 | 4 | yellow | black | brown | DWE25-16 | 30 | 16 | 7.3 | 0.2 | 11.2 |
| 35 | 2 | red | red | beige | FWE35-16 | 30 | 16 | 8.3 | 0.2 | 12.7 |
| 50 | 1 | blue | blue | olive | FWE50-20 | 36 | 20 | 10.3 | 0.3 | 15 |
| 2 × 0.5 (twin) | 2 × 20 | white | – | – | TWE0.5-8 | 16 | 8 | 1.5 | 0.15 | 4.9 |
| 2 × 0.75 (twin) | 2 × 18 | grey | – | – | TWE0.75-8 | 16 | 8 | 1.8 | 0.15 | 5.2 |
| 2 × 1 (twin) | 2 × 18 | red | – | – | TWE1-8 | 16 | 8 | 2.3 | 0.15 | 5.8 |
| 2 × 1.5 (twin) | 2 × 16 | black | – | – | TWE1.5-8 | 16 | 8 | 2.3 | 0.15 | 6.5 |
| 2 × 1.5 (twin) | 2 × 16 | black | – | – | TWE1.5-12 | 20 | 12 | 2.3 | 0.15 | 6.5 |
| 2 × 2.5 (twin) | 2 × 14 | blue | – | – | TWE2.5-10 | 18 | 9 | 2.9 | 0.15 | 7.5 |
| 2 × 4 (twin) | 2 × 12 | grey | – | – | TWE4-12 | 23 | 12 | 3.8 | 0.2 | 9 |
| 2 × 6 (twin) | 2 × 10 | yellow | – | – | TWE6-14 | 26 | 14 | 4.9 | 0.2 | 10 |
| 2 × 10 (twin) | 2 × 8 | red | – | – | TWE10-12 | 24 | 12 | 5.8 | 0.2 | 14.5 |
| 2 × 16 (twin) | 2 × 6 | blue | – | – | TWE16-16 | 29 | 16 | 8.3 | 0.22 | 18.3 |

## Where the files are

- GAM (gam-gec.com catalogue PDF): [Wire end ferrules and twin ferrules: L1, L2, D1, S1, D2 by cross-section, colour code, 'insulated to DIN 46228 part 4'](https://gam-gec.com/wp-content/uploads/2024/04/Ferrules_20240429.pdf) — web — Publisher's page; dimensions are facts
- Weidmueller (Misumi data sheet): [H10,0/22D R: L1 22, L2 12, D1 4.5, D2 7.6, S1 0.2, S2 0.4; colour code DIN](https://de.misumi-ec.com/pdf/ds/WML1/9019240000_H10_0_22D_R_de.pdf) — web — Publisher's page; dimensions are facts
- Weidmueller eShop: [H-sleeves (wire-end ferrules) with plastic collar: maker product page](https://eshop.weidmueller.com/de/h1014ds-r-bd-gsp/p/2528610000) — web — Publisher's page; dimensions are facts
- Otto Fischer (data sheet PDF): [1 mm2 red ferrule DIN 46228-4: d1 1.4, d2 3, l1 18, l2 12, s1 0.15, s2 0.25](https://www.ottofischer.ch/pim/860f5faf-7d1f-4a58-ae2c-22669009a5a5/187010.pdf) — web — Publisher's page; dimensions are facts
- Klauke (Buerklin listing): [47010 wire end ferrule 0.75 mm2, L 16, pin length 10, DIN 46228/4, grey](https://www.buerklin.com/en/p/klauke/wire-end-ferrules/47010/18H7463) — web — Publisher's page; dimensions are facts
- GLW (catalogue PDF): [Wire end sleeves: DIN 46228 T1 uninsulated lengths and d1 / S, T4 insulated, twin](https://docs.vekto.nl/media/glw/glw-glw-catalogus-adereindhulzen.pdf) — web — Publisher's page; dimensions are facts
- stex24: [Wire ferrules guide: colour codes French (A), German (B) and DIN 46228-4 by cross-section](https://stex24.com/guide/wire-ferrules) — web — Publisher's page; dimensions are facts
- Phoenix Contact (Mouser copy): [Colour tables: DIN 46228-4, UL486-F, NF C 63-023, special colour code, 0.14 to 50 mm2](https://www.mouser.lt/pdfdocs/PhoenixContact-Tables_colour.pdf) — web — Publisher's page; dimensions are facts

## Questions

**What colour is a 1.5 mm² ferrule?**

Black in DIN 46228-4, black in the French code and red in the German code.

**What colour is a 0.75 mm² ferrule?**

Grey in DIN 46228-4, blue in the French code and white in the German code.

**How long is a 2.5 mm² ferrule?**

In the GAM catalogue the 8 mm sleeve version is 14 mm overall (L1) with a 4.2 mm collar; longer steps (10, 12, 18 mm) exist.

**Do ferrule colours mean the same everywhere?**

No: DIN 46228-4, the French code and the German code differ for most sizes; always check the size printed on the pack.

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