High voltage isolators, load switches and circuit breakers are all high voltage electrical devices used to close and disconnect circuits. The tasks they carry in the circuit are also different. Isolation switch can only be used to cut off the line and cut off the power supply without load current, if used to cut off the current, it should also be a small no-load current; The charge switch is only used to cut off the load current, and the short circuit current should be cut off by the fuse: The circuit breaker is the main device to cut off the load circuit and the short circuit current. Their different uses also determine that there are major differences in structure and type.
