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Residual Current Protection Plastic Enclosure Circuit Breaker

Residual current circuit breakers are primarily intended for AC distribution networks operating at 50 Hz, with a rated voltage of 400 V and a rated current up to 800 A. They provide indirect contact protection for personnel, help prevent fire hazards caused by ground-fault currents resulting from insulation failure, and can be used to distribute electrical power while protecting circuits and power‑supply equipment against overloads and short circuits. Additionally, they may serve as switching devices for infrequent circuit operations and for the infrequent starting of electric motors.

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Residual current circuit breakers are primarily intended for AC distribution networks operating at 50 Hz, with a rated voltage of 400 V and a rated current up to 800 A. They provide indirect contact protection for personnel, help prevent fire hazards caused by ground-fault currents resulting from insulation failure, and can be used to distribute electrical power while protecting circuits and power‑supply equipment against overloads and short circuits. They may also serve as switches for infrequent circuit changes and for the infrequent starting of electric motors. Conventional residual‑current protective circuit breakers typically derive their supply voltage from two phases; in contrast, this series is three‑phase, and the residual‑current protection module will continue to operate normally even if one phase is missing. The rated residual operating current and the tripping time are adjustable on site according to actual conditions. Furthermore, the residual‑current protection module remains functional even when the phase voltage drops to 50 V.