| 摘要 |
Provided is a molded case circuit breaker 100 eliminating the necessity to install a communication unit and a particular communication medium and allowing for checking an fault type from a front indication operation panel of an enclosure of a power distributing board or from a remote area by simply connecting two signal lines for transmitting a relay switching signal as an accident current indication signal, the circuit breaker comprises a relay assembly 40 including a plurality of fault indicating relays installed in the circuit breaker and configured to generate a fault current indication signal by opening or closing a contact when the indication command signal of a fault current is received from the electronic trip unit 30, and a signal output terminal configured to output a fault type indication signal of the fault indicating relays to the outside of the circuit breaker. |
