The Siemens 3VA2440-5HN32-0AC0 is a SENTRON molded case circuit breaker rated for line protection, built on a 4800 A frame and delivering 400 A continuous at 40 °C — no derating needed up to 70 °C, which simplifies panel thermal budgeting when you're packing breakers close together. The 3-pole design includes two built-in auxiliary switches (HQ type) for remote status feedback — no separate aux kit to order and fit.
At 248 mm tall, 138 mm wide, and 110 mm deep, this MCCB fits standard distribution panel cutouts and leaves room for gland plates and cable bending radius on the line side. Maximum power loss of 63.5 W means the breaker dissipates heat into the enclosure; factor that into your panel cooling calculation if you're grouping several high-frame units.