- Current limiting circuit breakers feature lightweight current carrying parts, which can separate rapidly in the event of an electrical fault. In some designs, the parts are arranged so current flows in opposite directions through them, creating an electromagnetic force helping them to spring apart.
- A current limiting circuit breaker must interrupt current---and potentially destructive electrical energy---in a circuit in one alternating current (AC) half cycle (8.3 milliseconds) or less. According to the Institute of Electrical and Electronic Engineers (IEEE), traditional circuit breakers can take up to six AC cycles (0.1 seconds), or 12 times longer, to open.
- Current limiting circuit breakers protect valuable equipment from high current levels, which can cause extensive damage. They reduce the danger of serious injury and fire from arc flash, where electrical current passes through the air between electrical conductors.
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