Siemens SENTRON 5SN4132-8CN — D-curve 32 A MCB, 10 kA, 1-pole
The Siemens SENTRON 5SN4132-8CN is a 1-pole miniature circuit breaker from the 5SN4 series, rated 32 A with a D tripping characteristic and a 10 kA breaking capacity at 400 V AC.
Ratings and what they mean for fit
Rated current of 32 A at 400 V AC with a 10 kA breaking capacity. Single-phase operation rated 250 V; multi-phase rated 440 V.
Termination and wire range
Screw-type terminals accept solid or stranded conductors from 0.75 to 25 mm². Tightening torque is 2.5 to 3 N·m — a standard torque driver setting for this class of terminal, no special tooling needed. The design is halogen-free and silicon-free, which matters for panels in clean-room, food-processing, or semiconductor-adjacent environments where outgassing can contaminate optics or electronics. Touch protection is built in, and the breaker is sealable (provision for a lead seal or lockout tag).