Molded case circuit interrupter trip indicating handle

Details Molded case circuit interrupter trip indicating handle Molded case circuit interrupter trip indicating handle

1990-07-27

1991-08-06

Picard, Leo P.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

200304, H01H 7312

Patent

active

050381210

ABSTRACT:
An operating handle assembly for molded case circuit interrupters is robotically assembled to the circuit breaker operating mechanism without requiring any auxiliary fastening device. A visual access slot in the circuit breaker cover allows the condition of the circuit breaker contacts to be visually ascertained by use of colored indicia carried by the operating handle skirt. A slidably mounted handle shutter cooperates with the operating handle to prevent egress of arc exhaust gases in the event the circuit breaker contacts are closed or opened during overcurrent conditions when the circuit breaker is installed within an industrial power distribution circuit.

REFERENCES:
patent: 4266209 (1981-05-01), Di Marco et al.
patent: 4644122 (1987-02-01), Farley et al.
patent: 4736174 (1988-04-01), Castonguay et al.
patent: 4843359 (1989-06-01), Morris et al.

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