Circuit breaker with rating plug having memory

Details Circuit breaker with rating plug having memory Circuit breaker with rating plug having memory

H - Electricity

01

H

306/281

H01H 71/74 (2006.01) H01H 1/00 (2006.01) H01H 71/12 (2006.01) H02H 3/00 (2006.01)

Patent

CA 2034238

A microprocessor based circuit breaker has a removable rating plug which provides a reference for the current rating of the breaker. The removable rating plug also has an EEPROM to which the microcomputer of the circuit breaker writes for storage, the number of operations of the circuit breaker operating mechanism and a trip history of the breaker in the form of a count of the number of trips weighted by the magnitude of the trip current. The rating plug is periodically removed and plugged into a portable programmer which selectively displays the number of operations and operating history of the circuit breaker. The programmer clears this operating data when recorded and can write into the EEPROM the style and serial number of the circuit breaker with which the rating plug is to be used.

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