400 A MCCB with high interrupting capacity for line protection
The Siemens SENTRON 3VA2340-6HL32-0CL0 is a 3-pole molded case circuit breaker rated for 400 A continuous current, designed for line protection in distribution panels. Its interrupting capacity hits 242 kA at 240 V and 187 kA at 415 V — enough to handle high-fault scenarios without cascading upstream. The 400 A rating holds flat from 40 °C to 50 °C, then derates to 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, and 340 A at 70 °C, so plan your enclosure ventilation if the ambient climbs above 50 °C.
Panel fit and auxiliary configuration
Dimensions are 110 mm deep, 138 mm wide, 248 mm tall — standard MCCB footprint that fits most DIN-rail or panel-mount enclosures without surprises. Ships with an undervoltage release (UVR) and a full auxiliary switch block: 2 auxiliary switches, 1 trip alarm switch, and 1 electrical alarm switch HQ. That covers remote status and trip indication without adding external relays.