The Siemens SENTRON 5SL6232-7MB is a 2-pole miniature circuit breaker (MCB) rated 32 A with a C tripping characteristic. It breaks 6 kA at 400 V AC per EN 60898, which covers the fault-clearing requirement for most residential and light commercial sub-distribution boards. The C-curve means it holds through motor inrush up to about 5-10x rated current — typical for lighting, small pumps, and general socket outlets — then trips fast on a hard short.
What the ratings mean for fit
At 32 A per pole and 400 V line-to-line, this breaker handles a single-phase load up to 32 A or splits a 400 V three-phase circuit across two poles — common for a 32 A submain or a dedicated 32 A appliance circuit. The 6 kA breaking capacity (per EN 60898) is the standard domestic/commercial level; it safely interrupts a fault current up to 6,000 A without welding the contacts or rupturing the case. If your prospective short-circuit current at the panel exceeds 6 kA, step up to the 10 kA variant in the same SENTRON family.
Panel integration and mounting
Snaps onto standard 35 mm DIN rail — 2 module widths (36 mm) wide, 76 mm deep, 90 mm tall. Mounting position is unrestricted; the breaker works in any orientation. The IP20 rating (with connected conductors) means it's protected against finger contact but not water — keep it inside an enclosure. Sealable terminals let you lock the cover after commissioning to prevent tampering.
Environmental and service life
Rated for ambient temperatures from -40 °C to +75 °C, so it holds up in unheated utility rooms or hot switchgear cabinets. Mechanical life is 10,000 operating cycles typical — fine for a distribution board that sees infrequent switching. Halogen-free and silicon-free construction reduces toxic smoke in a fire and avoids silicone outgassing that can foul relay contacts in shared enclosures.