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 nearly 350 electrical
equipment and medical imaging manufacturers that make safe, reliable, and efficient products
and systems. Our combined industries
account for 360,000 American jobs in more than 7,000 facilities covering every
state. Our industry produces $106 billion shipments of electrical equipment and
medical imaging technologies per year with $36 billion exports.
Press contact:
Tracy Cullen
703-841-3282
press@nema.org