Circuit Breaker Features and Benefits

Nuisance-free operation when subject to high in-rush currents or transients, allowing ratings to be closely matched to the needs of the system and enabling the most efficient sizing of wiring and components.
Wide selection of time/current operating characteristics ensure tailoring to many different applications.
Quality design ensures resistance to premature failure through corrosion, fatigue, shock or vibration.
Unlike fuses, no need for spares. Risks of using temporary inappropriate substitutes are eliminated, and warranty costs are reduced.
Convenient resetting reduces down-time and service repair costs.
Many types also function as on/off switches, simplifying installation - fewer components result in higher overall reliability.
Internationally approved, avoiding the need for different models for different national standards.
Positive physical interruption of the circuit is ensured. There is no risk of equipment remaining live. Low leakage currents are eliminated.
Fail-safe if operated beyond specified performance limits. Unlike PTC devices, such as resettable fuses, which may arc and flame; also they require power to be removed before they can be reset.