The Siemens SENTRON 5SY4602-7 is a 4-pole miniature circuit breaker (3P+N) with a C-curve tripping characteristic, meaning it's designed for moderate inrush loads like motor starters and small transformers — the magnetic trip threshold sits at 5 to 10 times rated current, which avoids nuisance trips on startup while still clearing hard faults. At 400 VAC rated voltage, this breaker handles three-phase line-to-line loads common in European and Asian 400/230 V networks.
Mounting position is unrestricted, so it can go sideways or upside-down in a tight enclosure without derating. The combined terminal at top and bottom accepts both busbar and cable entry, simplifying panel wiring.
Dual-certified to IEC/EN 60898-1 and IEC/EN 60947-2 / UL 1077, which means it qualifies for both household-type distribution boards (60898) and industrial switchgear assemblies (60947-2). The UL 1077 listing covers supplementary protection in North American panels.
Environmental and handling notes
Rated for ambient operation from -40 °C to 75 °C, with humidity derating above 55 °C (max 95% RH at 55 °C, tapering to 35% at 75 °C).