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 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.
Auxiliaries and releases
No undervoltage release is fitted. The basic switch version is 3VA2440-5HL32-0AA0.