The 3VA1125-6EF32-0JH0 is a 3-pole SENTRON molded case circuit breaker rated for 25 A continuous current at 40 °C ambient, with the TM240 thermal-magnetic release tuned to that trip curve. At 415 V the breaking capacity is 154 kA, at 440 V it's 121 kA, and at 690 V it drops to 17 kA, so the voltage class of your distribution determines which figure governs your SCCR calculation. This is a line-protection version (not a motor-protection or generator version), so the TM240 release is set for feeder or branch-circuit protection where the load is resistive or a mix of general loads.
The 76.2 mm width is a standard 3-pole MCCB footprint for DIN-rail or screw-mount panels — it occupies three 25.4 mm pole spaces. Depth of 70 mm means it clears most standard enclosure gland plates and backpan depths without interference. Rated continuous current holds at 25 A from 40 °C through 50 °C, then derates to 24 A at 55 °C, 23.5 A at 60 °C, 23 A at 65 °C, and 22.5 A at 70 °C.