air switch of the motor,motor contactor,circuit breaker, Used ... modular design, small volume and breaker protectair switch of the motor,motor contactor,circuit breakerConform to IEC60947.2 ... and IEC 60947-4.1 as well as the EN60947-1 standardMainly used for overload and ... for the overload and short-circuit protection of circuit and power equipment in power distribution network Air switch of the motor