Article Highlight: ‘A Second Layer of Safety: Circuit Breaker Coatings’ HZO’s Rachael Lerebours in IPP&T Magazine

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Rachael Lerebours | Originally Published in IPP&T February 2021

Industrial circuit breakers, typically hidden away and inconspicuously installed in a basement or a utility room, are far more important than their physical location indicates. They are safety-critical components.

Because most industrial and manufacturing facilities are powered by electricity, there is an inherent risk to sophisticated equipment and machinery from abnormal harmonics, voltage surges, and circuit faults. Failures that send a facility offline can result in vast financial losses, even if only for seconds.

Circuit breakers are the scientific response to the uncertainty of smooth power system operation, which is essential for optimized production and security of supply. Its primary functions are to interrupt current flow after protective relays detect a fault and isolate issues.

Multiple design factors are considered when choosing the right industrial circuit breaker, and molded-case circuit breakers (MCCBs) have long been the de facto standard for industrial applications. They provide a safe and economical means of connecting and disconnecting loads from electrical sources and protection from thermal overload, short-circuit overcurrent of electrical conductors and equipment, and ground faults. MCCBs combine a temperature-sensitive device with a current sensitive electromagnetic device that acts mechanically on the trip mechanism…

Just as they protect facilities, the circuit breakers themselves need to be protected. 

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