Its 250 A continuous current (Iu) is thermally rated up to 50 °C without derating; at 55 °C it holds 243.3 A, and at 70 °C it still carries 223 A — so in a warm panel you lose less than 11 % of capacity at the top end. Breaking capacity is the headline: 121 kA at 240 V AC, 75.6 kA at 415 V, 25 kA at 440 V, and 11.9 kA at 690 V. At 415 V the 75.6 kA still covers most industrial distribution panels. Selectivity studies for a 250 A frame at these SCCR levels are straightforward; the 3VA series has published coordination tables.
Auxiliary and undervoltage release configuration
The auxiliary contacts report status back to a PLC or panel lamp; the trip alarm switch signals a fault trip separately from a manual open.
Panel integration
Dimensions: 105 mm wide, 158 mm high, 70 mm deep — fits standard MCCB panel cutouts and DIN-rail adapter plates.