Low cost disconnect switch rate with 40A, 3 pole or 4 pole to choose from, dielectric strength 5000V, rated insulation voltage 690V. Compact size easy connection, high performance and long electrical life.

40 Amp Isolator Switch Specification

Operation Mode

Tips: How to use an isolating switch?

1. When operating the isolating switch, first check that the circuit breaker of the corresponding circuit is indeed in the off position to prevent the isolating switch from being pulled and closed with load.
2. When the line is stopped and the power is transmitted, the isolation switch must be opened and closed in order. During power outage operation, the circuit breaker must be pulled first, then the line side isolating switch, and then the bus side isolating switch. The sequence of power transmission operation is opposite to that of power failure. This is because in the event of misoperation, the scope of the accident can be reduced in the above order to avoid man-made accidents from expanding to the bus.
3. During operation, if serious defects such as serious damage to the insulator or the transmission rod of the isolating switch are found, no operation is allowed.
4. During the operation of the isolating switch, there should be personnel on duty to check the opening and closing positions, synchronization conditions, contact depth and other items phase by phase at the scene to ensure that the isolating switch has the correct action and position.
5. The isolation switch should generally be operated in the main control room. When the remote control electrical operation fails, manual or electric operation can be carried out on-site, but the permission of the station master or technical person in charge must be obtained and the operation can be carried out under the condition of on-site supervision.
6. Electrical, electromagnetic and mechanical locking devices to prevent misoperation are installed between the isolating switch, the grounding switch and the circuit breaker. When the switching operation is performed, it must be carried out in sequence. If the locking device fails or the isolating switch and the grounding switch cannot operate normally, the position status of the corresponding circuit breaker and switch must be checked strictly according to the requirements of the lock. Only after the correctness is checked, the lock can be released for operation.