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GCB electrical switchgear leakage rate factorys

Miniature Circuit Breaker or MCB: What is it? (Working ...· What is MCB? A Miniature Circuit Breaker (MCB) is an automatically operated electrical switch used to protect low voltage electrical circuits from damage caused by excess current from an overload or short circuit. MCBs are typically rated up to a current up to 125 A, do not have adjustable trip characteristics, and can be thermal or thermal-magnetic in operation.

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