JBC series piercing clamp is suitable for low-voltage insulation line with the branch wire of connection from the main wire, or it is used for connect of jumper wire between strain area. The clamp has specially contact teeth piece. It ensures the best contact surface and is suitable for the transition connection of Co-Al to cover with the insulation shield and sealing, the functions are insulation and waterproof. Features: 1) Whole insulation shell 2) Piercing structure, easy installation, insulation conductor does not require to remove the layer 3) Structure sealing, waterproof, corrosion protection, long service life 4) Force moment bolt, to ensure the pressure of piercing 5) Connection with specially conductor, high-suitable 6) Cross section mail: 50 ~ 150mm2 7) Cross section tap: 50 ~ 150mm2