Electrical switching apparatus employing battery-powered...

Details Electrical switching apparatus employing battery-powered... Electrical switching apparatus employing battery-powered...

H - Electricity

01

H

H01H 9/16 (2006.01) H01H 71/04 (2006.01) H02H 1/06 (2006.01) H02H 3/04 (2006.01)

Patent

CA 2252348

A circuit breaker includes separable contacts for movement between a closed position and an open position. An operating mechanism moves the separable contacts between the closed and open positions and has a closed state and an open or tripped state which corresponds to the open position. A trip circuit senses electrical current flowing through the separable contacts, employs the sensed current to trip the operating mechanism to the tripped state to move the separable contacts to the open position, and provides plural status signals. A display circuit cooperates with the trip circuit and includes light emitting diodes for outputting the status signals. A battery powers the display circuit which further includes an oscillator circuit for modulating the LEDs to reduce power from the battery to the display circuit.

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