Draw out circuit breaker assembly

Details Draw out circuit breaker assembly Draw out circuit breaker assembly

1978-01-16

1980-05-27

Scott, James R.

Electricity: circuit makers and breakers

Interlocking

Between plural switches

361336, H01H 920

Patent

active

042052076

ABSTRACT:
A cradle for a circuit breaker secured in a cubicle in a switchboard wherein the cradle has a pair of side tracks forming the structural support for the entire cradle and a rear wall of insulating material which carries the upper and lower stationary disconnect contacts, pads for connection thereof to buses in the switchboard, secondary contacts, auxiliary switches, current transformers, grounding devices and an anchor point with respect to which the circuit breaker racking mechanism can operate. The cradle may also be shipped as a base for the circuit breaker and separated prior to installation. The cradle also provides interlocks for the circuit breaker and interference blocks to allow entry into the cubicle of only selected circuit breakers. The device is further shown in U.S. Pat. Nos. 4,146,764, 4,101,744 and 4,146,765.

REFERENCES:
patent: 3920938 (1975-11-01), Netzel et al.
patent: 4101744 (1978-07-01), Wilson

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