Insulation Piercing Connector ENSTO SLIW57 for 25–150 mm² Cables

ENSTO SLIW57 insulation piercing connector is designed to create a reliable electrical tap or branch on insulated conductors with cross-sections from 25 to 150 mm² without prior removal of the conductor insulation. The connector establishes metal-to-metal contact by piercing the insulation and compressing conductors within a durable housing suitable for overhead and underground distribution networks. Its design supports quick installation and long-term electrical continuity in power distribution applications.

Advantages

The connector provides a secure contact by piercing insulation, eliminating the need for stripping and reducing installation time. Built for mechanical stability and corrosion resistance, the housing and contact elements maintain consistent pressure and electrical connection under typical environmental conditions. ENSTO SLIW57 accommodates a wide range of conductor sizes and is compatible with common power network configurations, enabling flexible use in tap and branch installations.

Suitable for

• Creating taps and branches on medium- and low-voltage overhead lines
• Underground network splicing and branching where insulated conductors are used
• Field installations requiring quick connection without stripping conductor insulation
• Maintenance and expansion of power distribution circuits

Key specifications

• Conductor cross-section compatibility: 25–150 mm²
• Connection type: insulation piercing contact for solid and stranded conductors
• Suitable conductor insulation: common polymeric insulation types used in power distribution
• Mechanical characteristics: designed for stable clamping force and resistance to vibration
• Environmental resistance: corrosion-resistant materials for outdoor use in overhead and underground networks

How to use

Position the ENSTO SLIW57 connector around the insulated conductor and the branch conductor according to the installation drawing. Tighten the fastening bolts to compress the contact elements until the specified torque or visual compression indicator is reached, allowing the piercing blades to penetrate the insulation and establish electrical contact. Confirm mechanical tightness and electrical continuity following company or network testing procedures. No stripping of the conductor insulation is required prior to installation.

Usage recommendations

Use appropriate torque tools and follow local electrical safety regulations during installation. Confirm compatibility with conductor material and insulation type before use. Regularly inspect installed connectors as part of maintenance routines to verify mechanical tightness and absence of corrosion.