The Siemens SENTRON 3VA1125-4EF32-0AE0 is a 3-pole molded case circuit breaker (MCCB) rated for 25 A continuous current at 40 °C, with a TM240 thermal-magnetic overcurrent release. The interrupting ratings are the headline here: 121 kA at 240 V AC, 75.6 kA at 415 V, 52.5 kA at 440 V, and 11.9 kA at 690 V. For a sourcing buyer, that means one less variable to spec; what you see on the nameplate is what you get. The breaker ships with four high-capacity (HQ) auxiliary switches built in, so you get status feedback without adding a separate accessory block.
At 55 °C it steps down to 24 A, at 60 °C to 23.5 A, and at 70 °C to 22.5 A.
What's on the front and what isn't
The breaker is a straight thermal-magnetic line-protection device; if you need remote trip, GFCI, or metering, you'd add those externally or step up to a 3VA2 with electronic trip. The auxiliary contact version is listed as "4 auxiliary switches HQ" — that's four form-C contacts rated for switching signals back to a PLC or status lamp panel.