Its interrupting capacity hits 330 kA at 240 V AC, tapering to 242 kA at 415 V and 7.5 kA at 690 V — so at typical 400 V class supply voltages it clears faults well into the high-fault-current range without cascading upstream breakers. The unit ships with a factory-installed shunt trip release and two HQ auxiliary switches, making it ready for remote trip and status feedback without additional wiring modifications.
Above that it derates linearly: 385 A at 55 °C, 370 A at 60 °C, 355 A at 65 °C, 340 A at 70 °C. Maximum power loss is 96 W, which factors into enclosure ventilation sizing.
Physical fit in the panel
That depth includes the breaker body; the shunt trip and auxiliary switches add no extra projection beyond the standard 3VA2340 form factor.
What the built-in accessories mean for the circuit
The shunt trip (STL) release allows a remote signal — from an emergency-stop button, a fire-alarm relay, or a PLC digital output — to open the breaker independently of the overcurrent trip mechanism. The two HQ auxiliary switches provide form-C contacts that mirror the main contact position, so a control system knows whether the breaker is open or closed.