Product Introduction
The Siemens 5SL6163-6CC is a 1-pole miniature circuit breaker from the Basic Devices family, rated for 230/400 V with a 6 kA breaking capacity. It uses a B-curve trip characteristic and is rated at 63 A. This MCB is designed for DIN-rail mounting in distribution boards, lighting panels, and motor control centers where overcurrent protection of branch circuits is required.
Key Ratings and What They Mean for the Panel
The 6 kA breaking capacity at 230/400 V defines the maximum prospective short-circuit current the breaker can safely interrupt. In a site electrical engineer's selectivity study, this figure must exceed the available fault current at the breaker's location — otherwise a higher-rated unit or a current-limiting upstream device is needed.