The Siemens 5SL6432-7MB is a SENTRON 5SL6 miniature circuit breaker — 4-pole, C-curve, rated 32 A at 400 V AC, with a 6 kA breaking capacity. The 4-pole version switches three phases plus neutral, but does not switch the neutral internally. Rated for residential and infrastructure builds.
Width is 72 mm (4 width units), depth 76 mm, installation depth 70 mm — fits standard DIN-rail enclosures with the usual 4-module spacing. Screw terminals accept solid or stranded copper from 0.75 to 25 mm²; tighten to 2.5–3 N·m. IP20 with connected conductors — fine inside a panel, not for wet locations.