The mRB64/mRBM4 in PT-version is a line voltage-independent electromechanical residual current operated circuit breaker with integrated overcurrent protection, especially designed for usage in British Standard distribution systems with permanently connected neutral conductor (l = 950 mm). These combined MCB/RCD devices are not only available as AC and pulse current sensitive "standard type" A, but also as AC.
The mRB64-PT/mRBM4-PT circuit breakers are available with rated currents from 6 up to 32 A, in tripping characteristics B, C or D. Their switching capacity is 6 kA. A red-green contact position indicator and a white-blue tripping indicator makes it immediately apparent what is going on.
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