The National Electrical Manufacturers Association (NEMA) published a white paper,
NEMA ABP 3-2013
Molded Case Circuit Breaker Systems Testing with Conductors.
Molded case circuit breakers are designed to protect rated conductors and in particular, insulated wire. For this reason, it is necessary to test circuit breakers with wire to demonstrate that protection. NEMA ABP 3 discusses the necessityto test circuit breakers with wire to demonstrate that protection. The standard tests (as defined in UL 489) include overload and thermal tests, endurance followed by low level short circuit interrupting tests, and standard low level short circuit interrupting tests.
NEMA ABP 3-2013
Molded Case Circuit Breaker Systems Testing with Conductors is available at no charge.
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The National Electrical Manufacturers Association (NEMA) represents 350 electrical and medical imaging manufacturers at the forefront of electrical safety, reliability, resilience, efficiency, and energy security. Our combined industries account for more than 400,000 American jobs and more than 7,000 facilities across the United States. Domestic production exceeds $114 billion per year and exports top $50 billion.
Press contact:
Tracy Cullen
703-841-3282
press@nema.org