General
YCM7YV series electronic plastic case circuit breaker (hereinafter referred to as: circuit breaker) is suitable for low-voltage power grids with AC 50Hz, rated insulation voltage 800V, rated operating voltage 400V and below, and rated operating current up to 800A.
The circuit breaker has overload long-delay inverse time limit, short-circuit short-delay inverse time limit, short-circuit short-delay fixed time limit, short-circuit instantaneous and under-voltage protection functions. Under normal circumstances, the circuit breaker is used for infrequent switching of circuits and infrequent starting of motors.
This series of circuit breakers has isolation function, and its corresponding
symbol is