Shutter for disconnect contacts of circuit breaker cubicle

Details Shutter for disconnect contacts of circuit breaker cubicle Shutter for disconnect contacts of circuit breaker cubicle

1978-07-12

1980-01-08

Tolin, Gerald P.

Electricity: electrical systems and devices

Electrostatic capacitors

Fixed capacitor

200 50AA, 200304, H02B 114

Patent

active

041830733

ABSTRACT:
A shutter for a circuit breaker compartment in which the upper and lower stationary back disconnect contacts at the rear of the compartment are protected, as the circuit breaker is withdrawn from the compartment by a clam-shell shutter. The two halves of the shutters are biased toward closed position; a circuit breaker operates a cam end of a bell crank lever to open the clam-shell as the circuit breaker moves toward the rear of the compartment. The insulated rear wall has openings through which the stationary back disconnect contacts are accessible. The rear wall is curved at the openings for the contacts to correspond with the curvature of the clam-shell halves and to provide added guidance and support.

REFERENCES:
patent: 1718501 (1929-06-01), Trencham
patent: 3614350 (1971-10-01), Eichelberger

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