EVSK-40.5 vacuum circuit breaker is an indoor switchgear component with vacuum insulation. It can be operated frequently or break short-circuit current multiple times within the working current range; the mechanical life can be up to 20,000 times, and the full-capacity short-circuit current breaking times can reach 30 times. 

EVSK series vacuum circuit breaker application

The circuit breaker is suitable for three-phase AC 50Hz, 40.5kV system. It can be used in industrial and mining enterprises, power plants and substations to disconnect and connect load current, overload current and fault current, and is suitable for occasions with frequent operations.

Key Features:

The EVSK-40.5 circuit breaker adopts an up-and-down arrangement structure, which effectively reduces the depth of the circuit breaker. The circuit breaker adopts a composite insulation structure, and the three-phase arc extinguishing chamber and the connected live body are isolated by three independent epoxy resin insulation covers. After adopting the composite insulation structure, the circuit breaker meets the air clearance and creepage distance requirements under normal operating conditions, and effectively reduces the volume of the circuit breaker.