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Circuit breaker
"Circuit breaker" in a Sentence (2 examples)
From the evidence of witnesses and of the recorded passing times, including the time at which the circuit breakers were tripped when the wires were brought down, the train was travelling at a speed of not less than 70 m.p.h.
Typically traction packages monitor the supply frequency and if it strays outside pre-set limits open the circuit breaker between the pantograph and the transformer to shut off the power.
See also for "circuit breaker"
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