1. Product Introduction
Our copper-aluminum torsion terminal is a professional bimetallic connector, designed for safe connections between aluminum cables and copper electrical equipment. Using advanced friction welding technology, high-purity copper and premium aluminum are integrated into one piece, eliminating galvanic corrosion, high contact resistance and overheating risks from direct dissimilar metal contact. The copper end ensures stable conductivity for busbars and circuit breakers, while the thickened aluminum barrel with bolt torsion fastening firmly clamps aluminum cables. It covers common cable sizes, has standard mounting holes, and withstands wide temperatures, suitable for long-term use in various low-to-medium voltage power systems.
2. Key Features
Unlike traditional crimp terminals, this bolt-on torsion terminal enables tool-free installation—electricians can use ordinary hand tools, saving time, especially in narrow spaces or outdoor maintenance. Its seamless bimetallic structure resists vibration and temperature changes, preventing cracking and maintaining low-resistance transmission. Made of anti-oxidation materials, it performs well in humid and industrial environments. Strict quality control ensures uniform size, accurate holes and reliable clamping force, with strong compatibility for engineering procurement.
3. Application Scenarios
Widely used in indoor power distribution, switchgear, factory and commercial building electrical systems. It is also suitable for new energy (solar, wind, energy storage), municipal power transformation, rural grid upgrading, and industrial sites like chemical plants and mining areas. Additionally, it fits mechanical equipment, temporary power supply and electrical maintenance projects.
4. FAQ
Q: What’s its core advantage?
A: It eliminates galvanic corrosion and enables quick tool-free installation, with strong vibration resistance.
Q: Which cables does it fit?
A: Standard stranded aluminum cables; choose models based on cable cross-section.
Q: Is it suitable for outdoors?
A: Yes, with natural anti-oxidation; regular inspection extends service life in harsh environments.
Q: Is installation easy?
A: Yes—strip insulation, insert cable, tighten the bolt; no crimping tools needed.
| ltem No. | Cross sectio n(mm²) | A | B | C | Bolt |
| DTLL-16/70-12/B | 16/70 | φ24±1 | 92±2 | φ23±0.2 | M12×1.25 |
| DTLL-50/150-12/B | 50/150 | φ30±1 | 108±2 | φ28±0.2 | M16×1.25 |
| DTLL-95/240-16/B | 95/240 | φ35±1 | 129±2 | φ34±0.2 | M16×1.25 |
| DTLL-185/400-16/B | 185/400 | φ50±1 | 196±3 | φ44±0.2 | M22×1.25 |
