Miniature circuit breaker for residential and infrastructure panels
The Siemens SENTRON 5SL6325-6RC is a 3-pole miniature circuit breaker rated 25 A at AC with a B tripping characteristic, per EN 60898. It interrupts fault currents up to 7.5 kA, sufficient for most residential and light commercial distribution boards where the prospective short-circuit current stays within that limit. The B curve means it trips between 3 and 5 times rated current — suited for resistive and general-purpose loads where inrush is modest, not for motor starting or transformer primary protection where a C or D curve would be needed to avoid nuisance trips. Rated for 415 V AC multi-phase operation, with a maximum of 440 V AC. Single-phase rating is 250 V AC. The unit occupies 3 width units (54 mm) on a DIN rail, with a depth of 76 mm and an installation depth of 70 mm. Mounting position is unrestricted. Ambient temperature range is -25 to +45 °C; storage range extends from -40 to +75 °C.
Termination and wiring
Screw-type terminals accept solid or stranded conductors from 0.75 mm² up to 25 mm². Tightening torque is specified at 2.5 to 3 N·m — within the range of a standard torque screwdriver. The breaker is sealable, halogen-free, and silicon-free. Touch protection is provided per the product feature listing.