Siemens SENTRON 3VA2440-5MN32-0HA0 — 400 A Motor Protection MCCB with Shunt Trip
It carries a maximum interrupting rating of 187 kA at 240 V AC, with 121 kA at 415 V and 75.6 kA at 500 V — figures that govern its fault-clearing capability on industrial distribution. The design includes phase failure detection and a factory-fitted shunt trip (STL) for remote tripping, but no auxiliary switch or undervoltage release. At 400 A, this MCCB handles the full-load current of a large motor or a feeder feeding multiple smaller motors. Maximum power loss is 63.5 W, a figure to factor into enclosure thermal calculations. The shunt trip (STL) allows a remote signal (e.g., from an E-stop or PLC) to open the breaker independently of the overcurrent trip mechanism. No auxiliary contacts are included, so if you need status feedback to a control system, plan for an external auxiliary switch block.
Interrupting Capacity — Where It Fits
At 415 V (common in European industrial), 121 kA covers most utility-fed plant mains.
Integration Notes
Dimensions are 248 mm high × 138 mm wide × 110 mm deep (9.76 × 5.43 × 4.33 in). The 3-pole footprint matches the standard SENTRON 3VA frame; panel cutout and mounting hole pattern follow the 3VA family template. The breaker ships as a basic switch (base order code 3VA2440-5MN32-0AA0) with the shunt trip added.