The PLZ4 miniature circuit breaker (MCB) is a protective device that’s equipped with both a thermal and an electromagnetic release. The former responds in the event of an overload, while the latter offers protection against short circuits. The 1+N-pole PLZ4 is 2 HP wide and is available with rated currents from 0.16 A to 63 A. It is not only suitable for conventional AC applications but also for DC applications up to 48 V. It has a switching capacity of 4.5 kA.
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