Siemens SENTRON 3VA2025-7KQ46-0AA0 — 25 A 4-Pole MCCB with 330 kA Breaking Capacity
At 415 V and 440 V the interrupting rating is 242 kA, and at 500 V it holds at 187 kA; only at 690 V does it drop to 3 kA, so verify your system voltage against these curves.
The adjustable thermal-magnetic trip range is 38 A minimum to 300 A maximum, with a full-scale value of 25 A and an initial value of 15 A, giving flexibility for coordinating with downstream breakers. Power loss is only 0.5 W maximum, negligible for enclosure thermal calculations.
Dimensions are 86 mm depth, 140 mm width, 181 mm height — fits a standard 4-pole MCCB footprint. The design includes a communication function for remote monitoring or trip indication, and a ground-fault monitoring version using summation current formation on L + N conductor. No undervoltage release or voltage trigger is built in, so if you need those, plan for external accessories.