MCCB for Line Protection — 400 A, 187 kA at 240 V
The Siemens SENTRON 3VA2440-5HN32-0AG0 is a 3-pole molded case circuit breaker (MCCB) rated for continuous 400 A across the full ambient temperature range from 40 °C to 70 °C, with no derating required up to 70 °C. Its interrupting capacity reaches 187 kA at 240 VAC, 121 kA at 415 V and 440 V, 75.6 kA at 500 V, and 9 kA at 690 V — figures that govern its suitability for high-fault installations where SCCR coordination with upstream transformers or generators is critical. Rated for line protection duty, this MCCB carries a maximum power loss of 63.5 W and includes a trip indicator for visual status. The auxiliary switch configuration is 1 auxiliary switch plus 1 trip alarm switch HP; no undervoltage release, no ground-fault monitoring, and no communication function are fitted on this variant.
Lifecycle and Sourcing
The basic switch variant is listed as 3VA2440-5HN32-0AA0, which may be referenced for internal component-level documentation. No official successor or alternate MPN is recorded in the lifecycle data.
Integration and Mounting
Panel integration: the MCCB occupies 138 mm width, 248 mm height, and 110 mm depth — dimensions that determine DIN-rail or mounting-plate spacing in a switchboard. The 3-pole form factor with a 400 A frame typically requires bolted connections and sufficient clearance for arc-chamber venting per IEC 60947-2 installation rules.
Environmental and Compliance
Operating temperature range is -25 °C to 70 °C; storage range extends from -40 °C to 80 °C. The part is designed for line protection within the SENTRON family, compliant with relevant IEC/UL standards for molded case circuit breakers. Compliance documentation (RoHS, REACH, UL, IEC) is available from the manufacturer upon request.