The Siemens SENTRON 3VA2340-6JP32-0BC0 is a 3-pole molded case circuit breaker rated for 400 A continuous current, designed for line protection in industrial distribution panels. Its breaking capacity reaches 242 kA at 240 V and 187 kA at 415 V, giving ample headroom for high-fault installations like main feeders or large motor branch circuits.
Mounts on a DIN rail or direct panel; dimensions are 138 mm wide, 248 mm high, 110 mm deep — verify the enclosure cutout and gland plate spacing before committing the layout.
The breaker includes an undervoltage release (UVR) and two auxiliary switches (HQ type), plus a communication function — useful for remote monitoring or integration into a higher-level control system. It ships with a basic switch (3VA2340-6JP32-0AA0) as the supplied base unit. Thermal derating is published: the 400 A rating holds from 40 °C up to 50 °C, then drops to 375 A at 55 °C, 350 A at 60 °C, 325 A at 65 °C, and 300 A at 70 °C. Plan the enclosure ventilation accordingly if the ambient exceeds 50 °C.
Compared to the smaller 3VA2116-5JP32-0AE0 (a 160 A frame), this 3VA2340 carries a 400 A frame with substantially higher breaking capacity — 242 kA vs the 160 A unit's lower ratings — so a panel originally specified for the 160 A breaker cannot simply drop in the 400 A version without checking busbar ampacity, lug size, and enclosure thermal limits.