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Dimensioning Thermal Circuit Breakers for Equipment

Published by: SCHURTER Holding AG

This whitepaper discusses the factors that need to be considered when selecting rated currents of circuit breakers.
Thermal circuit breakers for equipment (CBE) protect motors and transformers against electrical overloading. The trip release of a breaker takes place with the deflection of a bimetal. This deflection is in turn dependent on heat caused by the level of current flowing through the bimetal. The typical time-current characteristic of a thermal circuit breaker is a result of the thermal delay of the bimetal.
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Published: January 27, 2020 Lang: ENG
Type: Whitepaper Length: 2 pages

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