The Siemens 3VA2440-7HK32-0AA0 is a SENTRON 3VA2 molded case circuit breaker rated for 400 A continuous current at 40 °C through 70 °C ambient — no derating needed across that entire temperature band, which simplifies panel design in warm enclosures or near heat sources. Breaking capacity reaches 330 kA at 240 V, 242 kA at 415 V and 440 V, 187 kA at 500 V, and 9 kA at 690 V — the 240 V and 415 V figures are what matter for most North American and IEC distribution panels, respectively. The ETU340 electronic trip unit (design of the overcurrent release) provides adjustable long-time, short-time, and instantaneous protection curves, making this breaker suitable for line protection in main or feeder distribution — not a motor-protective device.
Sourcing and lifecycle — active, quoted to order
Panel integration — physical fit
Dimensions: 248 mm height, 138 mm width, 110 mm depth — fits standard MCCB panel cutouts and bus-bar spacing for 400 A frame sizes. The storage minimum covers cold warehouse conditions, the operating max suits hot-aisle or outdoor cabinet deployments.