MCCB for line protection — 25 A, high interrupting capacity
The Siemens SENTRON 3VA1025-4ED32-0BH0 is a three-pole molded case circuit breaker (MCCB) rated for line protection at 25 A continuous, with no derating needed up to 50 °C — at 55 °C it holds 24 A, and at 70 °C it still carries 23 A. That thermal stability matters in a sealed or poorly vented panel where ambient climbs above 40 °C; you don't lose a full 20 % of capacity like some breakers do. Breaking capacity hits 121 kA at 240 V, drops to 75.6 kA at 415 V, and still holds 11.9 kA at 690 V — that puts it in the high-interrupting range for a 25 A frame, giving selectivity headroom downstream without cascading upstream breakers. The UVR drops the breaker when control voltage falls below a threshold — common for emergency-stop circuits or to prevent auto-reclose after a power dip. No ground-fault monitoring on this version; that's separate.
Dimensions are 130 mm height, 76.2 mm width, 70 mm depth — a standard 3-pole MCCB footprint that fits most DIN-rail or panel-mount enclosures without needing adapter plates.