Modular accessory mechanical lock-out mechanism
AssigneeGeneral Electric Company
InventorsJames L. Rosen, Raymond K. Seymour, Roger N. Castonguay
Life of this patent
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Abstract
A combined bell alarm and lock-out accessory is connected with the electronic trip unit that controls a high ampere rated circuit breaker. The accessory interacts with the circuit breaker operating mechanism to activate the bell alarm upon circuit interruption and to prevent the closing of the circuit breaker contacts until the accessory is manually reset. The circuit breaker lock-out mechanism interfaces between the circuit breaker operating mechanism and the accessory to insure that the contacts remain open until the accessory is completely reset.
Claims9
An industrial-rated circuit breaker for high level overcurrent protection comprising:
- an insulative base and an insulative cover;
- an operating mechanism in said base connecting between a pair of sideframes and controlled by an electronic trip unit arranged within said cover to open and close a pair of contacts;
- a closing arm having a first end accessible from said cover, said closing arm adapted for articulating said operating mechanism for release of a closing spring to close said contacts;
- an accessory unit arranged within said cover, said accessory unit including reset means to allow reset of said accessory unit after said accessory unit has become actuated;
- and
- interlock means within said cover interacting with said operating mechanism and said accessory unit preventing said operating mechanism from closing said contacts until said accessory unit is reset, said interlock means including a interlock link pivotally connected at a first end with said closing arm, said interlock means further including a lockout arm interacting with a second end of said interlock link remote from said first end.
Dependencies are inferred from the claim text.