The Siemens SENTRON 3VA2440-5KP32-0AA0 is a 3-pole molded case circuit breaker (MCCB) rated for 400 A continuous current across its full operating temperature range of -25 °C to 70 °C, with no derating needed from 40 °C through 70 °C. It carries the ETU850 electronic trip unit for adjustable overload and short-circuit protection, including N-conductor protection configurable from OFF to 20%–160% of the phase rating.
This MCCB delivers 187 kA interrupting capacity at 240 V, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V. The 9 kA at 690 V still clears most industrial motor-circuit faults. The ETU850 trip unit supports adjustable short-time delay for selective coordination downstream.
Dimensions are 248 mm high, 138 mm wide, 110 mm deep — a standard 3-pole MCCB footprint for Siemens SENTRON 3VA2 frames. Power loss is 63.5 W maximum, so account for that heat in the enclosure thermal budget.