Ground fault circuit breaker for low voltage supply system, has interrupter that keeps ON and OFF of power circuit of a power supply line in link with ON/OFF from main contact during dielectric rigidity test

摘要

The breaker has an interrupter that keeps ON and OFF of power circuit of a power supply line (9) connected to a grounding detection circuit (7), in link with ON/OFF from a main contact (2) during dielectric rigidity test. The main contact, a change over switching mechanism (3), and a lever (4) of a trigger integrated in a main case supplies a phase voltage to a main circuit (1).