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DN495,pdf英文资料
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2012-01-11
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A circuit breaker protects sensitive load circuits fromexcessive current flow by opening the power supply whenthe current reaches a predetermined level. The simplestcircuit breaker is a fuse, but blown fuses require physicalreplacement. An electronic circuit breaker provides thesame measure of circuit protection as a fuse without thesingle-use problem. Nevertheless, an electronic circuitbreaker with a fixed trip current threshold, while effectivefor protection, can become a nuisance if tripped by shortduration current transients—even if the circuit breakerself-resets.
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