H - Electricity – 01 – H
Patent
H - Electricity
01
H
306/74
H01H 73/02 (2006.01) H01H 77/10 (2006.01)
Patent
CA 1130348
ABSTRACT OF THE DISCLOSURE A current limiting circuit interrupter includes two parallel pivoting contact arms carrying contacts at the ends thereof. The upper contact arm is pivoted upon a carriage which is in turn pivotally mounted upon a mechanism frame. A latch rod is movably secured in arcuate slots in the sides of the mechanism frame. When the circuit in terrupter is in the closed circuit position, a pair of springs connected between the latch rod and the carriage urges the latch rod against a reaction surface of the upper contact arm to provide contact closing pressure. Upon occurrence of severe overload current conditions, the upper contact arm pivots upon the carriage, moving the latch rod within the arcuate slots to release the contact closing pressure, allowing the springs to move the latch rod against a latching surface of the upper contact arm to latch the upper contact arm in the open circuit position.
337284
Mcconnell And Fox
Westinghouse Electric Corporation
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