Electricity: magnetically operated switches – magnets – and electr – Electromagnetically actuated switches – Automatic circuit-interrupting devices
Patent
1989-10-26
1990-07-03
Tolin, Gerald P.
Electricity: magnetically operated switches, magnets, and electr
Electromagnetically actuated switches
Automatic circuit-interrupting devices
200292, 200306, 361115, 361395, 336 65, H01H 8302
Patent
active
049394916
ABSTRACT:
A multipurpose combination barrier and auxiliary current transformer board is provided for a circuit breaker. The board is located at the rear of the circuit breaker housing to close an open portion of the housing and act as a barrier to prevent contact with internal circuit breaker components. Vent holes, provided in the bottom portion of the board, allow heat generated within the circuit breaker to be exhausted to the atmosphere. The top portion of the board serves as a mounting plate for the auxiliary current transformers. The top portion of the board is formed from a printed circuit board having an electric circuit disposed thereon for the connections between the main current transformers, auxiliary transformers and the electronic trip unit. Connectors are provided on the printed circuit board adjacent each auxiliary current transformer to connect the main current transformers to the printed circuit. Another connector is provided on the board to connect the printed circuit board to the electronic trip unit. Thus, time consuming wiring connections are greatly reduced.
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Gula Lance
Nissly Gregg J.
Shimp Alan B.
Moran M. J.
Tolin Gerald P.
Westinghouse Electric Corp.
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