That 250 A holds flat from 40 °C through 50 °C ambient — only starts to derate at 55 °C (241 A) and steps down to 213 A at 70 °C, so in a warm enclosure you still have headroom before the trip unit nudges the curve. Breaking capacity is the real selector here: 187 kA at 240 V AC, 121 kA at 415 V and 440 V, 79 kA at 500 V, and 5.1 kA at 690 V. At 690 V the 5.1 kA figure tells you this is a line-protection breaker, not a motor-circuit device — the application is feeder protection, not switching a load.
Trip unit and auxiliaries — what is built in
It is a straight line-protection breaker with four HQ auxiliary switches (4 auxiliary switches HQ) that give you status feedback for the PLC or annunciator panel. The supplied basic switch is order code 3VA2225-5HL32-0AA0. This version adds the four HQ switches.
Maximum power loss is 48 W. Latching endurance is 20,000 operations.