First, the model: GW9-10 / 400A 630A 1000A 1250A GW9-12 / 400A 630A 1000A 1250A HGW9-15 / 400A 630A 1000A 1250A GW9-12GW / 400A 630A 1000A 1250A novel GW9-10 series outdoor high-voltage isolation switch with good antifouling capacity, and its disclosure than type I is 3.2cm / Kv, II type is 4.0cm / Kv, use in polluted areas, can greatly improve the safety and reliability of operation. GW9-15 Outdoor HV 50 Hz single-phase relationship to isolate high voltage switchgear for rated voltage 15KV power system, the load voltage division as having co-circuits. The switch is operated by an insulating rod. GW9-10 outdoor 10-15KV unipolar isolation switch for the transmission and distribution wires on the road, cut off, closed-load load single-phase or three-phase circuit. When the switch is closed, the line can be reliably through the normal operating current, open circuit or fault current. When turned off, you can be guaranteed and maintenance of electrical equipment load voltage parts completely separated, easy maintenance personnel safety overhaul. 10-15KV load distribution equipment, extensive and distribution transformers, high-voltage fuse, high pressure oil switches. Simple single-pole isolation switch outdoor structure, reliable operation, operational safety, cost the economy. Product performance in line with the national standard GB1985-89.