The Siemens 5SL6332-7CC is a SENTRON miniature circuit breaker (MCB) in a 3-pole configuration with a C tripping characteristic, rated at 32 A and 400 V AC. It provides a 6 kA breaking capacity according to EN 60898, making it suitable for protecting branch circuits in residential and light commercial infrastructure panels where the prospective short-circuit current stays under that threshold.
What the ratings mean for fit
The C-curve (tripping between 5 and 10 times rated current) handles moderate inrush from motorized loads like pumps or small compressors without nuisance tripping — a common choice for mixed resistive-inductive circuits in distribution boards. The 6 kA breaking capacity at 400 V AC is the maximum fault current this MCB can safely interrupt; verify that the available fault current at the installation point does not exceed this value to maintain coordination with upstream devices. The 3-pole design covers three-phase loads or three single-phase circuits sharing a neutral. Rated operational voltage extends to 440 V AC maximum in multi-phase operation, which covers standard 400 V three-phase networks across 50/60 Hz supplies. Physical fit is defined by the 3-module-width footprint (54 mm wide, 90 mm tall, 76 mm deep) with a 70 mm installation depth behind the panel. It snaps onto standard DIN rail and accepts supplementary devices (auxiliary contacts, shunt trips, alarm switches) via the accessory slot — useful for remote status monitoring or emergency shutdown integration.
Integration notes
Mounts in any position on 35 mm DIN rail. The IP20 rating (with connected conductors) means it is intended for enclosed distribution boards — not for wet or dust-exposed locations. Pollution degree 2 and overvoltage category III are standard for fixed-installation MCBs in residential and commercial panels. Operating temperature range spans -40 °C to 75 °C, which covers most indoor and sheltered outdoor enclosures. Power dissipation per pole at rated current is 4.6 W in hot operating state. For a 3-pole unit that totals about 13.8 W — factor this into the enclosure thermal budget, especially in high-density DIN-rail layouts where adjacent breakers share the same air volume. Halogen-free and silicon-free construction reduces corrosive off-gassing risk in enclosed panels, which matters for sensitive electronics sharing the same enclosure.