Its interrupting capacity hits 187 kA at 240 V AC, dropping to 121 kA at 415/440 V and 75.6 kA at 500 V — enough headroom for most industrial service-entrance or feeder applications where high fault current is a given.
At 55 °C it drops to 241 A, at 60 °C to 232 A, and at 70 °C to 213 A. That thermal curve means this breaker can sit in a moderately hot enclosure without losing much margin, but above 50 °C you need to check the actual load against the derated value. The 86 mm depth and 140 mm width fit a standard MCCB footprint on DIN rail or panel-mount. At 181 mm tall, it occupies about the same vertical space as other 250 A frame breakers, so retrofitting into an existing SENTRON or third-party panel is straightforward as long as the busbar spacing accommodates 4-pole.