Circuit breaker with positive contact indication

Details Circuit breaker with positive contact indication Circuit breaker with positive contact indication

1986-10-24

1989-05-09

Pellinen, A. D.

Electricity: circuit makers and breakers

Multiple circuit control

Operating means

200DIG42, 200401, 335166, H01H 300

Patent

active

048291471

ABSTRACT:
A circuit breaker having positive contact indication. Upon the circuit breaker tripping, the operating mechanism components unlatch, moving the cradle, upper link and lower link upwards and opening the contacts. Upon the circuit breaker being manually opened, no operating mechanism components move except the upper link and lower link which causes the contacts to open. Upon the occurrence of locked contacts and the operating mechanism receiving a trip signal, the operating mechanism components unlatch but move only slightly since the contacts cannot open. A shuttle, pivotally mounted on the cradle, moves upward slightly to catch its tail on a flipper spring. The shuttle rotates slightly to meet a tab positioned on the handle arm and to block and opening movement of the operating handle.

REFERENCES:
patent: 3525959 (1970-08-01), Ellsworth et al.
patent: 4129762 (1978-12-01), Bruchet
patent: 4165453 (1979-08-01), Hennemann

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