Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Multiple contact type
Reexamination Certificate
2000-03-15
2001-05-15
Donovan, Lincoln (Department: 2832)
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Multiple contact type
C335S202000
Reexamination Certificate
active
06232859
ABSTRACT:
BACKGROUND OF THE INVENTION
The present invention relates to the mounting of auxiliary switches in a molded case circuit breaker and, more particularly, to customizing a molded case circuit breaker by providing a flexible packaging arrangement for mounting various types of auxiliary switches in a mid-cover of the molded case circuit breaker.
As electrical power distribution systems become more sophisticated, increasing demands are placed on circuit breakers to perform collateral functions in addition to their primary function of circuit protection. The circuit breaker can be customized for use in various applications. The customization is achieved by installing one or more auxiliary switches in the circuit breaker. Conventionally, the auxiliary switch is utilized for indicating the open or closed position of a pair of contacts, or for indicating tripping on a fault, or for any other control or indication function. The auxiliary switch cooperates electrically or mechanically with components of the circuit breaker.
Dependant on the individual demands of the circuit breaker, one or more auxiliary switches are used. When used in a molded case circuit breaker, the space available to accommodate these auxiliary switches is at a premium. Isolation of the auxiliary switches from live breaker parts in a circuit breaker case is essential for field installation of the auxiliary switch and also to maintain the integrity of the circuit breaker.
SUMMARY OF THE INVENTION
It is therefore desirable to provide a safe and flexible mounting method for installing auxiliary switches in the molded case circuit breaker. By installing the auxiliary switches in the circuit breaker one can customize the circuit breaker to meet individual applications.
The use of one compartment to house multiple auxiliary switches provides flexibility in the mounting of the auxiliary switches. To secure the auxiliary switch in its position within the compartment, a series of teeth are formed on both the auxiliary switch and on the auxiliary switch mating surface located on the mid-cover. The auxiliary switch is snapped into place, and the auxiliary unit teeth and the mid-cover teeth mesh, thereby preventing any rotational movement of the secured auxiliary switch.
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Castonguay Roger N.
Christensen Dave S.
DeVizzi Francesco
Rosen James
Cantor & Colburn LLP
Donovan Lincoln
General Electric Company
Horton Carl B.
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