Siemens 3VM1125-5EE32-0AA0 — SENTRON MCCB, 25 A, 187 kA SCCR
It's a 3-pole frame with a 187 kA interrupting capacity at 240 V AC, stepping down to 121 kA at 415 V and 76 kA at 440 V — numbers that tell you this breaker is built for high-fault utility or transformer-fed panels where the available short-circuit current is significant. Front protection is IP40 — fine for a dry indoor panel, but not for washdown zones.
Current derating and thermal limits
That's a shallow slope — the breaker doesn't shed much capacity until you're well above typical panel ambient. Maximum power loss is 9 W, which is modest for a 3-pole 25 A frame. The storage limits govern handling and warehousing, not running conditions.
The 3VM1125-5EE32-0AA0 measures 130 mm high, 76.2 mm wide, and 70 mm deep. No trip indicator on the front, so you'll need to read the handle position or wire an auxiliary contact separately if remote status is required.