It carries 250 A continuous current (Iu) across four poles, with a TM240 thermal-magnetic release that handles overloads and short circuits without external power. The 121 kA interrupting rating at 240 V drops to 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V — so the available fault current at your service voltage decides whether this breaker clears the fault or the arc flash gets ugly first.
Thermal performance and panel fit
This breaker holds its full 250 A rating up to 50 °C ambient; above that it derates in steps — 243.3 A at 55 °C, 236.5 A at 60 °C, 229 A at 65 °C, 223 A at 70 °C. Dimensions are 158 mm high, 140 mm wide, 70 mm deep — standard MCCB footprint for a 4-pole frame this size, with IP40 protection on the front face.
The auxiliary contact version is 3VA9608-0BB25. That UVR means the breaker drops open if control voltage falls below the dropout threshold — useful for emergency-stop circuits or undervoltage protection on motor feeders where you don't want automatic reclose after a dip.