The Siemens SENTRON 3VA2440-6HN32-0AH0 is a 3-pole molded case circuit breaker (MCCB) rated for line protection, carrying 400 A continuously from 40 °C up to 70 °C without derating — that means it holds its full ampacity in a warm panel, not just on a cool bench. Frame size is 4800 A, and the interrupting ratings climb to 242 kA at 240 V, 187 kA at 415 V and 440 V, 121 kA at 500 V, and 9 kA at 690 V. That spread covers most industrial distribution voltages in North America and Europe on one breaker.
Sizing and mounting
Footprint is 138 mm wide by 248 mm tall by 110 mm deep — fits standard MCCB panel cutouts and bus-bar centers. The 3-pole block lands on a DIN rail or direct-mount plate; no communication module or undervoltage release on this variant, so wiring is straight power in, power out, plus the auxiliary switch block (2 aux + 1 trip alarm) for status feedback to a PLC or annunciator.