Siemens 5SY7506-6 — B-curve MCB with neutral switching
Breaking capacity is dual-rated: 15 kA per EN 60898 at 230 V AC, and 40 kA per IEC 60947-2 at the same voltage. For DC circuits, the interrupting rating is 15 kA at 60 V (max 72 V).
IP20 with connected conductors is the standard open-panel rating — no additional enclosure seal needed for the breaker itself.
Environmental and mounting notes
Rated for ambient temperatures from -40 °C to +75 °C, with derating above 55 °C per the humidity curve (max 95% RH at 55 °C, tapering to 35% at 75 °C). The quick-assembly fastening system and sealable design (padlockable toggle) allow the panel builder to lock the breaker in the OFF position for lockout/tagout compliance without additional accessories.
