Schneider small circuit breaker and leakage switch difference

1. Definition of mini circuit breaker

Electrical occupation for short MCB, suitable for communication 50/60Hz extra voltage 230/400V, extra current to 63A line overload and short circuit maintenance, also can be used in normal conditions as a line of frequent operation conversion.

2. Definition of leakage switch

Leakage switch is a kind of maintenance electrical apparatus which uses the detection of the magnitude of the phase line to ground leakage or shock current generated in the power grid under maintenance to announce the operation trip signal and complete the operation trip mission. In the low-voltage power grid equipped with leakage maintainer, under normal circumstances, the grid phase line to ground leakage current (for the three-phase power grid is unbalanced leakage current) is small, can not reach the operating current value of the leakage maintainer, so the leakage maintainer does not operate. When the faults such as leakage or personal electric shock are generated in the power grid to be maintained, the current of the leakage maintenance device detection component reaches the current value of the leakage or electric shock action, the leakage maintenance device will produce the action trip command, so that the main circuit switch operated by it can trip, block the power supply, so as to complete the mission of leakage or electric shock maintenance. RCD has the function of overload and short circuit maintenance, can be used to maintain the overload and short circuit of the line or the motor, and can also be used as the non-frequent conversion of the line to start under normal conditions.

Two, small circuit breaker and leakage switch difference

Both of them play the role of line overload maintenance. Small circuit breaker is the control of the electrical circuit switch, if the air as the arc extinguishing medium called air switch. Generally selected with extra current (load), as the main switch of the electrical circuit. Leakage switch is a set of overload, short circuit and leakage maintenance in one, can be installed independently, equivalent to leakage maintenance device plus small circuit breaker or leakage accessories plus small circuit breaker.

Can be briefly understood as when a small circuit breaker with leakage maintenance function, called leakage maintenance switch. If it is an electrical device used solely for leakage maintenance, it is called leakage maintenance device.