The Siemens SENTRON 5SL6163-7MB is a 1-pole miniature circuit breaker (MCB) with a C tripping characteristic, rated at 63 A and a breaking capacity of 6 kA according to EN 60898. It handles single-phase AC circuits up to 250 V or multi-phase up to 440 V, and is rated for DC operation up to 72 V. The 18 mm width (1 modular unit) snaps onto a DIN rail, making it a direct panel fit for residential and infrastructure distribution boards.
In a multi-pole assembly or a densely packed enclosure, that heat must be factored into the thermal budget — especially if the board is sealed or in a high-ambient environment.
DIN-rail fit and panel integration
The 18 mm width occupies one modular unit on a standard DIN rail. Mounting position is any — horizontal, vertical, or flat — which simplifies layout in tight enclosures. The IP20 rating applies with connected conductors; the breaker is sealable for tamper-proofing in metered or public-access boards.