Insulation piercing connectors are designed to connect and branching all kinds of conductors Steel Insulated Wires up to 1 kV and for wiring customers and lighting . When tightening the bolts, the teeth contact plates penetrate the insulation and establish a reliable electrical contact. Installation can be performed on active line without powering down the line. Reliability contact connection is provided exactly matched tightening torque bolt head screw. Clip design provides conjoined leakproofness and resistance to atmospheric agents. Insulated housing made of weather and UV resistant polymer, reinforced with fiberglass.