A residual current circuit breaker must be used in conjunction with a
miniature circuit breaker (MCB). RCCBs are the safest device for protecting against earth currents and are utilised across an array of applications. They operate by quickly and automatically cutting off a power supply when unbalanced electric currents are detected. An unbalance may indicate a current leak, which can subsequently pose a significant risk to the circuit. On average, RCCBs can operate within 25 to 40 milliseconds after detecting a leak, making them the most reliable circuit breaker on the market.
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