What it is and what it does
The Siemens 5SL4632-7CC is a SENTRON miniature circuit breaker (MCB) with a 3P+N pole configuration, C-curve tripping characteristic, and a 32 A rated current at 30 °C. It is designed for 400 V AC systems and provides a 10 kA breaking capacity per EN 60898 — the standard for overcurrent protection in residential and commercial final circuits. The C-curve means it trips between 5 and 10 times rated current, so it handles moderate inrush from motor loads or transformers without nuisance tripping, while still clearing short circuits fast enough to protect downstream wiring.
What the ratings mean for fit
The 10 kA breaking capacity at 400 V AC (per EN 60898) tells you this MCB can safely interrupt a fault current up to 10,000 A without welding its contacts or failing catastrophically. That is the standard rating for most residential and light commercial distribution boards in Europe. The 32 A rating is the continuous current it can carry at 30 °C ambient; at 40 °C it derates to 30.31 A, at 50 °C to 28.52 A — so if your panel runs hot, you need to account for that derating or step up to a 40 A frame. The 3P+N design switches all three phases and the neutral, which is required for TN-S or TN-C-S systems where the neutral is not solidly bonded at the board. The 4-module-width (72 mm) footprint fits standard DIN-rail enclosures; the 76 mm depth leaves clearance for wiring and busbars.
Mounting and integration
Snaps onto standard 35 mm DIN rail. Mounting position is unrestricted — any orientation works. The IP20 rating applies only with connected conductors, so the front terminals are finger-safe but the busbar area is not sealed against dust ingress. Pollution degree 2 (non-conductive dust, occasional condensation) covers most indoor panel environments. Overvoltage category III means it is rated for fixed-installation distribution boards, not for equipment-level protection.