It's the motor-protection variant of the 3VA2 frame, meaning it includes phase-failure detection and a dedicated trip indicator — features that matter when the breaker is feeding a motor directly rather than a distribution bus. The interrupting ratings climb to 330 kA at 240 V and stay at 242 kA through 440 V, then taper to 187 kA at 500 V and 52.5 kA at 690 V. Thermal derating is flat from 40 °C to 50 °C at 160 A, then drops to 153.6 A at 55 °C, 150.4 A at 60 °C, 147.2 A at 65 °C, and 144 A at 70 °C.
Panel Fit & Integration
In a dense enclosure, that 75 W needs to be factored into the thermal budget — don't stack it against other high-loss devices without airflow.