Circuit breaker trip solenoid having over-travel mechanism

Details Circuit breaker trip solenoid having over-travel mechanism Circuit breaker trip solenoid having over-travel mechanism

1993-10-27

1995-08-22

Donovan, Lincoln

Electricity: magnetically operated switches, magnets, and electr

Electromagnetically actuated switches

Tripping means

335175, H01H 900

Patent

active

054444241

ABSTRACT:
For a circuit breaker a trip solenoid assembly is provided for initiating separation of a pair of contacts within the circuit breaker. The trip solenoid assembly incorporates a solenoid having a metal sleeve with a plunger that moves reciprocatingly within the metal sleeve. A cap is disposed at one end of the plunger having a tab extending therefrom with a tab aperture therein. The plunger has a slot defined by a pair of prongs for receiving the tab, the pair of prongs each have a plunger aperture therein. A retaining pin located within the cap aperture and the plunger apertures retains the cap on the plunger together. The retaining pin retains the cap to the plunger in such a way as to allow the cap and the plunger to have relational movement with respect to each other. A compression spring is positioned between the solenoid and the retaining pin for biasing the plunger in a direction away from the solenoid so that when the solenoid is energized the plunger will move in a direction away from the solenoid.

REFERENCES:
patent: 5162765 (1992-11-01), DiVincenzo et al.
patent: 5343179 (1994-08-01), Pipich et al.

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