The Siemens SENTRON 5SL6363-7CC is a 3-pole miniature circuit breaker rated 63 A with a C tripping characteristic, designed for 400 V AC systems and a 6 kA breaking capacity per EN 60898. It occupies 3 modular width units (54 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm — standard panel fit for a 3P MCB in this class.
The 3-pole design switches all three phases simultaneously, which is the expected configuration for a 400 V three-phase feeder or submain in a distribution board.
This MCB is specified for residential buildings and infrastructure — think apartment distribution boards, small commercial panelboards, and lighting circuits in public facilities. Mounting position is unrestricted, so it works in vertical or horizontal DIN-rail enclosures.
Halogen-free and silicon-free construction matters in clean-room or sensitive-electronic environments where outgassing from a fault could contaminate contacts or optics. The sealable design allows the panel builder to lock the toggle position after commissioning, preventing unauthorized switching.