Siemens 3VA1125-5EE42-0AA0 — SENTRON 4-Pole MCCB, 25 A, TM220 Release
It carries a continuous current rating of 25 A across the ambient range from 40 °C to 50 °C, then derates to 24 A at 55–60 °C and 23 A at 65–70 °C — a thermal curve worth checking if the panel runs warm. This is a 4-pole breaker with a TM220 thermal-magnetic release, meaning the fixed thermal trip and magnetic short-circuit trip are matched to the 25 A frame. The interrupting ratings are substantial: 187 kA at 240 V, 121 kA at 415 V, 75.6 kA at 440 V, and 17 kA at both 500 V and 690 V. That SCCR headroom means it can sit upstream of most branch panels without worrying about cascading faults.
The 70 mm depth fits shallow enclosures. The 4-pole width is 101.6 mm.