Siemens 5SL3310-6 SENTRON MCB — 10 A, B-Curve, 3-Pole
The Siemens 5SL3310-6 is a 3-pole miniature circuit breaker from the SENTRON 5SL series, rated at 10 A with a B tripping characteristic. It snaps onto a DIN rail and occupies 3 width units (54 mm). The B-curve means it trips between 3 and 5 times rated current — standard for residential and light commercial final circuits where inrush is modest (lighting, socket outlets). Breaking capacity is 4.5 kA per both EN 60898 and IEC 60947-2, adequate for most distribution boards in building infrastructure.
Key ratings and what they mean for fit
Rated voltage is 400 V AC, with a maximum of 440 V in multi-phase operation. Breaking capacity is 4.5 kA. Terminals accept solid or stranded conductors from 0.75 to 25 mm², with a tightening torque of 2.5 to 3 N·m. The housing is halogen-free and silicon-free, which matters for panels in environments sensitive to outgassing (clean rooms, certain industrial zones). IP20 protection applies with connected conductors — standard for enclosed distribution boards. Mounting position is any, so the breaker can be installed horizontally or vertically without derating.