At 40 °C it carries 250 A continuous; the thermal derating curve drops to 223 A at 70 °C, which is the maximum operating ambient per the datasheet. The rated insulation voltage is 800 V, and the breaking capacity ranges from 121 kA at 240 V down to 11.9 kA at 690 V — so the voltage class of your distribution determines which interrupting rating applies.
Above that it steps down: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C. Maximum power loss is 57 W — that heat has to leave the enclosure, so factor it into the thermal budget for a sealed cabinet.
Breaking capacity by system voltage
The interrupting rating is voltage-dependent: 121 kA at 240 V, 75.6 kA at 415 V, 52.5 kA at 440 V, 17 kA at 500 V, and 11.9 kA at 690 V. For a 480 V distribution system the relevant value is the 440 V or 500 V figure depending on the actual line-to-line voltage — use the next-higher voltage column if your system falls between the listed points.
Physical fit and auxiliary switch complement
Dimensions are 105 mm wide, 158 mm high, 70 mm deep.