The Siemens 5SL4432-7CC is a SENTRON miniature circuit breaker (MCB) — a 4-pole, C-curve unit rated 32 A at 400 V AC, with a 10 kA breaking capacity per EN 60898.
Derating and mounting
At 40 °C it derates to 30.31 A, at 45 °C to 29.43 A, at 50 °C to 28.52 A, and at 55 °C to 27.58 A. The breaker mounts in any position (vertical, horizontal, upside down) and snaps onto standard DIN rail. It occupies 4 modular width units (about 72 mm of rail space). It's also sealable — you can lock the toggle in the off position with a padlock for LOTO compliance.
This breaker fits a standard DIN-rail enclosure and is rated for residential buildings and infrastructure (per the suitability listing). It carries IP20 protection with connected conductors — fine inside a closed panel, not for wet or outdoor use without an enclosure. If you're looking at the 5SL3340-7CC as a possible substitute, note the pole count: the 5SL3340-7CC is a 3-pole unit. The 5SL4432-7CC is 4-pole, so it handles three-phase-plus-neutral or a separate switched neutral. The width difference is one modular unit (3 MW vs 4 MW). No rewiring of the panel bus is needed if the original design allowed for the wider footprint, but the neutral pole wiring must be accounted for.
Sourcing and compliance
Compliance documentation — RoHS, REACH, and the IEC/EN standards listed on the nameplate — is available with the shipment.