ELECTRONIC MOLD CASE CIRCUIT BREAKER HAVING PRIORITY CONTROL FUNCTION

摘要

PURPOSE: An electric mold case circuit breaker having a priority control function is provided to protect important equipments by controlling lines using priority with respect to loads in a system. CONSTITUTION: At least one super electronic circuit breaker is prepared. A plurality of sub electronic circuit breakers are connected with the super electronic circuit breakers on the same lines and have a plurality of set leakage break priorities. Microprocessors(29) are installed on the plurality of sub electronic circuit breakers and control a trip of the sub electronic circuit breakers when there occurs an overload in one or more of the sub electronic circuit breakers. A priority control part(32) receives a control signal of the microprocessors and controls the sub electronic circuit breakers in a set order according to the priority.