Insulation-piercing connector ENSTO SLIP12.05 for aluminium 10–50 mm² to copper 1.5–50 mm²

ENSTO SLIP12.05 is an insulation‑piercing connector engineered to join aluminium conductors (10–50 mm²) with copper conductors (1.5–50 mm²) without the need to strip insulation. The device secures conductors mechanically and establishes electrical contact by piercing the insulation with integrated teeth, enabling safe and fast connections for mixed‑material installations in overhead and distribution systems.

Advantages

The connector allows connection of aluminium to copper conductors while maintaining insulation integrity on the conductor cores, which reduces installation time and limits exposure to live parts. Its mechanical clamp design provides a consistent compression force and reliable contact pressure. Constructed from corrosion‑resistant materials suitable for outdoor service, the product supports repeated mechanical and electrical loads typical in service taps and distribution networks.

Suitable for

• Overhead line branch connections where aluminium and copper conductors meet
• Service taps from distribution conductors to building supply conductors
• Distribution network repairs and small extensions requiring mixed conductor material joins
• Field installations where insulation stripping is undesirable or impractical

When it may not be suitable

This insulation‑piercing connector is intended for conductors within the specified cross‑section ranges; it is not suitable for conductors outside these ranges or for connections requiring insulation removal for inspection or specific jointing methods. Applications that demand soldered, welded, or welded‑and‑heat‑shrunk joints for certification or where the connector’s mechanical design is incompatible with system mounting should use an alternative joining method.

Key specifications

• Aluminium conductor range: 10–50 mm²
• Copper conductor range: 1.5–50 mm²
• Insulation‑piercing contact mechanism with integrated teeth for direct connection through insulation
• Mechanical clamp for secure conductor retention
• Corrosion‑resistant materials suitable for outdoor installation

How to use

Position the aluminium and copper conductors in their respective channels of the connector without removing insulation. Align conductors as required by the connector body, then apply the specified torque to the fastening screw or clamp to compress the contact elements; this action pierces the insulation and establishes electrical contact. Verify mechanical retention and electrical continuity after installation, and follow local regulations for insulation sealing or additional protection if the connector will be exposed to aggressive environments.

What to consider before purchase

• Confirm conductor cross‑section sizes fall within the aluminium 10–50 mm² and copper 1.5–50 mm² ranges
• Check compatibility with the installation environment (outdoor exposure, temperature, UV) and any additional sealing requirements
• Ensure the connection method (insulation‑piercing) meets local electrical codes and utility specifications
• Verify required torque values and suitable tools for correct installation

Usage recommendations

Use recommended installation torque and perform a continuity test after tightening. Where long‑term outdoor exposure is expected, consider additional sealing or protective covers to limit moisture ingress and prolong service life.