What this 3VA2 MCCB carries
The Siemens 3VA2440-6HN32-0DL0 is a SENTRON molded case circuit breaker built for line protection in industrial distribution. It's a 3-pole unit rated 400 A continuous from 40 °C all the way up to 70 °C — no derating headache in a hot enclosure. Breaking capacity is 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and still 9 kA at 690 V. That's serious fault-clearing muscle for high-available-fault-current panels — think transformer secondaries or large motor control centers. It ships with an undervoltage release (UVR) fitted, plus a 2-auxiliary-switch block, a trip alarm switch, and an electrical alarm switch. That's a full complement of signaling contacts for PLC or SCADA feedback without adding separate modules.
Integration notes
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — fits standard SENTRON 3VA2 panel cutouts and busbar systems. Max power loss is 66 W, so factor that into enclosure thermal calculations, especially in a packed MCC lineup. The basic switch is order code 3VA2440-6HN32-0AA0; this -0DL0 suffix adds the UVR and auxiliary/alarm switch package. If you're replacing an older 3VA2 frame, confirm the existing accessory wiring matches this contact configuration.