Klauke 371R12 Cable Lugs | 185sqmm Bi-Metallic Crimp Lug

Klauke 371R12 Cable Lugs
The Klauke 371R12 is a bi‑metallic Al/Cu compression cable lug, made to connect 185 sqmm aluminium conductors (round or multi‑stranded) or 240 sqmm sector‑shaped conductors to copper studs (M12). Engineered according to DIN 46329, the Bi-Metallic Cable Crimp Lugs have a grease‑filled contact zone, barrier design, and clear tool‑code marking for corrosion‑resistant, reliable terminations in humid or outdoor environments.
Cable Lugs & Connectors
Explore the complete range of cable lugs and connectors for jointing and terminating cables, and for connecting conductors into low, medium, and high voltage switchgear, control panels, and transformers — using either compression (crimping) or mechanical shearbolt (“snap-off”) technology.
Key Features
- Tube dimensions conform to DIN 46329
- Suitable for non‑tension aluminium conductors — compliant with DIN EN 60228 / EN 50182
- Pre-greased, barrier-type Al/Cu lug prevents oil and moisture ingress
- Solid copper palm for secure bolting; bright unplated finish
- Crimp markings & die code 28 for precise tool guidance
- Designed for pre-rounded sector shaped conductors

Crimping Guide for Klauke 371R12 Cable Lugs
To ensure a safe and electrically reliable termination, the Klauke 371R12 cable lug must be crimped using the correct tools, dies, and method. This bi-metallic lug is suitable for both 185sqmm and 240sqmm aluminium cables and is designed for use with M12 studs.
Recommended Cable Crimping Tools
- Klauke EK120/42 – Battery-operated hydraulic crimping tool
- Klauke EKM6022CFM – Compact battery-powered crimper
Die Selection
Click to view crimping table
| Cable Size | Die Code | Number of Crimps |
|---|---|---|
| 185sqmm | 28 | 6 (Aluminium 7mm) / 3 (Aluminium Wide) |
| 240sqmm | 28 | 6 (Aluminium 7mm) / 3 (Aluminium Wide) |
Crimping Notes
- Always begin crimping on the aluminium side and finish on the copper side.
- Ensure each crimp indentation aligns with Klauke’s recommended spacing and orientation.
- Use only Klauke-approved dies and tools to maintain compliance with DIN 46235 and IEC 61238-1.
Klauke 371R12 Cable Lugs Specification
| Klauke 371R12 Specification | Details |
|---|---|
| Manufacturer | Klauke |
| Connection Bolt Diameter | M12 |
| Lug Material | Copper/Aluminium |
| Lug Style | Compression Cable Lug |
| Number of Crimps Aluminium [7mm] | 6 |
| Number of Crimps Aluminium [Wide] | 3 |
| b [See Image] | 35 mm |
| Nominal Cross-Section [re/se] | 240 sqmm |
| Nominal Cross-Section [rm/sm] | 185 sqmm |
| Total Length | 105.5 mm |
| Weight Per 100 Pieces | 18.4 kg |
| d1 [See Image] | 18.3 mm |
| d2 [See Image] | 28.5mm |