The Siemens SENTRON 3VA2440-5HL32-0KL0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying a continuous current of 400 A across the full ambient range from 40 °C to 70 °C — no derating needed up to that ceiling. Its interrupting capacity hits 187 kA at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V, so it handles high-fault scenarios typical of industrial distribution panels without cascading upstream. The breaker includes a shunt trip (STL) for remote opening, two auxiliary switches plus one trip alarm and one electrical alarm switch (HQ design), and a trip indicator. No undervoltage release, no ground-fault monitoring, no communication module — this is a straightforward line-protection device sized for a main or heavy feeder.
Dimensions and panel fit
The breaker measures 248 mm high, 138 mm wide, and 110 mm deep — a standard 3-pole MCCB footprint for a 400 A frame. If your panel was laid out around a 5SQ2370-2YA05 or similar 3-pole 400 A MCCB, check the mounting centres and bus-bar spacing; the 138 mm width and 110 mm depth are typical for this class, so a drop-in replacement is possible but not guaranteed without a template check. The operating temperature range is -25 °C to 70 °C; storage from -40 °C to 80 °C.
Auxiliaries and releases
The breaker ships with a shunt trip (STL) for remote tripping, plus two auxiliary switches and one trip alarm switch plus one electrical alarm switch (HQ design). No undervoltage release is fitted. The basic switch version is 3VA2440-5HL32-0AA0. Maximum power loss is 63.5 W — factor that into enclosure ventilation if the panel is sealed.