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Molded case circuit breaker thermal-magnetic trip unit
Molded case circuit breaker thermal-magnetic trip unit
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机译:塑壳断路器热磁脱扣器
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摘要
A molded case circuit breaker having a thermal-magnetic trip unit is provided with a mechanical rating plug to allow a number of circuit breakers of different ampere ratings to be used within a common- sized enclosure. The rating plug interacts with a thermal-magnetic trip unit to set the circuit breaker ampere rating.
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