The Siemens SENTRON 3VA2440-7HL32-0JH0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection in distribution panels. It carries a continuous current rating of 400 A across the full ambient temperature range from 40 °C to 70 °C — no derating needed up to that ceiling, which simplifies panel layout in warm enclosures or near other heat sources. Interrupting capacity is the headline number here: 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 330 kA figure at 240 V covers high-fault utility feeds and transformer secondaries where available fault current is extreme. At 415/440 V the 242 kA rating still provides substantial headroom for most industrial service entrances. Adjustable overload and short-circuit protection covers 600 A to 4800 A, with a trip indicator and voltage-trigger capability built in. The unit includes a shunt trip (STL) auxiliary release and a complement of 2 auxiliary switches plus 1 trip alarm switch (HQ configuration) for remote status monitoring.
Panel fit and integration
Footprint: 138 mm wide, 248 mm tall, 110 mm deep. The 138 mm width is the standard 3-pole MCCB form factor for this SENTRON frame size — it occupies the same panel cutout as other 3VA2-series 3-pole units. Depth of 110 mm leaves clearance for rear-connected busbars or cable lugs in a typical distribution cabinet. The basic switch assembly is order code 3VA2440-7HL32-0AA0; the -0JH0 suffix adds the shunt trip and auxiliary switch complement. No ground-fault monitoring module is included (specified as "Without"). If GF protection is needed downstream, plan for a separate GF relay or a different variant.