It's the kind of breaker you spec into a main distribution panel or a large feeder when you need reliable overcurrent and short-circuit protection at 250 A continuous.
Breaking capacity — what it clears and where
This MCCB's interrupting rating changes with system voltage, which is typical for molded case breakers. At 240 V it clears 76 kA; at 415 V it's 53 kA; at 440 V it drops to 32 kA; and at 500 V it's 12 kA. That means on a 415 V industrial feeder it still handles substantial fault currents — enough for most secondary distribution applications — but on a 500 V system you need to check that 12 kA exceeds your available fault current. The 4-pole design (three phases plus neutral) lets you protect a TN or TT system where the neutral needs switching. No ground-fault monitoring or N-conductor protection built in — this is a straight line-protection breaker.
Thermal derating — don't ignore it
Above that the TM210 release starts to back off: 243.3 A at 55 °C, 236.5 A at 60 °C, 229.8 A at 65 °C, and 223 A at 70 °C. The 57 W maximum power loss is at full rating — that's the heat you're managing inside the cabinet.
Dimensions are 70 mm deep by 140 mm wide by 158 mm high — that's a 2.8 x 5.5 x 6.2 inch footprint. Fits standard panel-mount cutouts for 4-pole MCCBs in this class.