What this MCCB carries and where it fits
The SENTRON 3VM1125-5ED32-0AA0 is a 3-pole molded case circuit breaker (MCCB) designed for line protection, with a TM210 thermal-magnetic overcurrent release. Rated 25 A at 40 °C, it holds that rating flat through 50 °C, then derates to 24 A at 55–60 °C and 23 A at 65–70 °C — useful to know when the panel sits near a dryer section or a hot process vessel. The interrupting capacity climbs to 187 kA at 240 V, drops to 121 kA at 415 V, 76 kA at 440 V, and 17 kA at 500 V; that 187 kA figure at 240 V means it handles high-fault scenarios on the secondary side of a distribution transformer without needing a current-limiting fuse upstream. Dimensions are 70 mm deep, 76.2 mm wide, 130 mm high — a 3-pole footprint that fits standard panel layouts. Insulation voltage is rated 800 V, so it can be applied in 480 V and 600 V class systems with headroom. Power loss is 9 W maximum, which keeps heat manageable in a crowded enclosure.