Insulation-piercing connector ENSTO SLIP12.127 for Al/Cu 10–70 mm² (bare) and Al/Cu 1.5–50 mm² (insulated)

ENSTO SLIP12.127 is an insulation‑piercing connector engineered for reliable mechanical and electrical connections between aluminum and copper conductors. The connector accepts bare conductors from 10 to 70 mm² and insulated conductors from 1.5 to 50 mm², enabling secure contact without the need to strip insulation. Designed for use in overhead lines, distribution networks and service taps, it provides a compact solution for branch connections and fast repairs.

Advantages

The connector provides insulation‑piercing technology that ensures a gas‑tight contact and consistent electrical continuity while eliminating the time and variability of manual stripping. Constructed from corrosion‑resistant materials and shaped for firm mechanical clamping, it offers stable connection performance under typical outdoor conditions. Compatibility with a broad conductor cross‑section range reduces the number of different parts required for installations.

Suitable for

• Overhead distribution lines where branch taps to service lines are needed
• Service line connections to residential or commercial supply cables
• Quick on-site repairs and temporary connections in distribution networks
• Applications requiring mixed Al/Cu conductor junctions without stripping insulation

When it may not be suitable

This connector is intended for the specified conductor cross‑section ranges; it should not be used with conductors that fall outside these sizes. It is not designed for applications requiring insulated rated connectors with integrated surge protection or for environments needing specialized sealing beyond the standard corrosion‑resistant materials.

Key specifications

• Bare conductor range: 10–70 mm²
• Insulated conductor range: 1.5–50 mm²
• Compatible conductor materials: Aluminum and Copper
• Connection principle: Insulation‑piercing (no stripping required)
• Mechanical design: Clamping body providing firm retention
• Environment: Suitable for overhead and distribution network applications

How to use

Position the connector so the conductor intended for piercing is aligned with the piercing groove and place the mating conductor in the corresponding channel. Apply the recommended torque with an appropriate tool to deform the piercing element and create the electrical contact. After tightening, verify mechanical retention and electrical continuity according to local standards. Follow safe work practices for live‑line work or de‑energize circuits when required by procedure.

What to consider before purchase

• Confirm conductor cross‑section sizes fall within the supported ranges (bare 10–70 mm², insulated 1.5–50 mm²)
• Verify compatibility with aluminum and copper conductors used in your network
• Determine whether additional sealing or environmental protection is required for your installation site
• Ensure installers have correct tools and torque specifications for reliable connections

Usage recommendations

Use torque‑controlled tools and follow ENSTO installation guidance or applicable national standards to ensure secure, gas‑tight contacts. For installations exposed to harsh environmental conditions, consider additional protective measures such as weatherproofing kits or localized sealing to extend service life.