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US 6,617,533 B1Granted
Interlock for a circuit breaker
AssigneeSiemens Energy & Automation, Inc.
InventorsRobert P. Lawson, Andrew Hall
Life of this patent
Estimating the term…
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AssigneeSiemens Energy & Automation, Inc.
InventorsRobert P. Lawson, Andrew Hall
Estimating the term…
An interlock for two circuit breakers, with the circuit breakers configured in the same electrical circuit and with each circuit breaker having a cross bar and contact assembly. The interlock comprises a pivot pin mounted a spaced distance from the two circuit breakers. An interlock yoke having two ends, with a notch proximate each end of the yoke and the yoke is coupled to the pivot pin. A first operator rod having a first end is configured to engage the cross bar and contact assembly of one circuit breaker and has a second end configured to engage the notch of the yoke. A second operator rod having a first end is configured to engage the cross bar and contact assembly of the other circuit breaker and has a second end configured to engage the notch of the yoke. When one operator rod is moved by the cross bar and contact assembly of one circuit breaker, that operator rod pivots the yoke, causing the other operator rod to block the operation of the other circuit breaker.
A method of preventing two circuit breakers from operating in the same electrical circuit, with each circuit breaker having a crossbar and contact assembly, the method comprising the steps of:
An interlock for two circuit breakers, with the circuit breakers configured in the same electrical circuit and with each circuit breaker having a crossbar and contact assembly, the interlock comprising:
An interlock for two circuit breakers, with the circuit breakers configured in the same electrical circuit and with each circuit breaker having a crossbar and contact assembly, the interlock comprising:
Dependencies are inferred from the claim text.