Narrow multi-pole circuit breaker having inertia actuated overtr

Details Narrow multi-pole circuit breaker having inertia actuated overtr Narrow multi-pole circuit breaker having inertia actuated overtr

1975-03-04

1976-03-23

Harris, G.

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Automatic circuit-interrupting devices

335 10, 335175, H01H 7512

Patent

active

039463451

ABSTRACT:
A plurality of single pole circuit breakers stacked side-by-side are interconnected by a tie rod connecting the magnetic armatures of their respective instantaneous trip means. When one pole is caused to trip because of a fault condition, a driving formation on the releasable cradle of the faulted pole delivers a hammerlike blow to a cam means on the magnetic armature. The energy imparted to the armature by this blow causes the latch carried thereby to move in the tripping direction substantially beyond the point required for releasing the cradle latch in the faulted phase. This added movement assures that the tie rod shall transmit sufficient motion to all non-faulted poles to cause tripping thereof.

REFERENCES:
patent: 3194922 (1965-07-01), Ellsworth et al.

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