Mechanical Bimetal Lug for Aluminum to Copper Connection
This mechanical bimetal lug is designed for connecting aluminum cables to copper busbars or equipment terminals. The lug features a mechanical connection, eliminating the need for crimping tools and providing a reliable transition between aluminum and copper.




Technical Specifications
Product Overview
Mechanical Bimetal Lug
The JTLL series mechanical bimetal lug is engineered for the transition connection of aluminum or aluminum alloy cables to copper terminals in low-voltage electrical equipment. Featuring a high-strength aluminum alloy body and friction-welded construction, these lugs ensure stable performance and prevent galvanic corrosion. Designed for ease of use, they eliminate the need for specialized crimping tools, requiring only a standard wrench for installation.
Technical Details
- Material Composition
- High Strength Aluminum AlloyCopper (Cu≥99.9%)
- Compliance Standard
- IEC 61238-1: 2003
Key Features
Installation Benefits
- No crimping tools required; use socket spanner or wrench
- Torque-controlled shear head bolts prevent conductor damage
- Prefilled with jointing compound
- Friction welded for superior connection
Specifications Table
Technical Specifications
| Type | Conductor Size (mm²) | Outer Diameter (mm) | Bolts | Shear Torque (Nm) |
|---|---|---|---|---|
| JTLL10-35 | 10-35 | 16 | 1 | 8 |
| JTLL25-50 | 25-50 | 18 | 1 | 10 |
| JTLL50-95 | 50-95 | 22 | 1 | 22 |
| JTLL120-185 | 120-185 | 30 | 1 | 40 |
| JTLL240-300 | 240-300 | 36 | 2 | 55 |




