SYSTEM AND METHOD FOR MANAGING POWER SUPPLY TO A CIRCUIT BREAKER CONTROL UNIT

摘要

A system (34) for controlling power in a circuit breaker trip unit (16) is disclosed. The system includes: a user interface (26) operably coupled to the trip unit (16) and having a plurality of input keys (28,30); a power conditioner (20) operably coupled to the user interface (26) and operably coupled to a battery power source (24) and an external power source (22); and a power control circuit (36). The power control circuit (36) is configured to automatically electrically connect the battery power source (24) to the power conditioner (20) in response to activation of any o f the plurality of input keys (28,30), and in the absence of an electrical connection between the external power source (22) and the power conditioner (20).