Its interrupting capacity hits 330 kA at 240 VAC and stays at 242 kA through 440 VAC, then drops to 187 kA at 500 VAC and 4.5 kA at 690 VAC — so the voltage class of your service entrance or feeder panel decides which rating governs the fault duty. That UVR is a common spec for safety circuits where a drop in control power must open the main breaker. Thermal derating starts at 55 °C: the breaker holds 250 A flat through 50 °C, then steps down to 241 A at 55 °C, 232 A at 60 °C, 222 A at 65 °C, and 213 A at 70 °C. Maximum power loss is 50.5 W, which matters for enclosure heat rise calculations in a sealed panel.
What the auxiliary release and switches add
The two HQ auxiliary switches provide electrically isolated position feedback (open/closed) for PLC inputs or status indicators. Because both are factory-integrated into the 3VA2225-7HN32-0DC0 variant, there is no separate kit to order or install; the breaker arrives ready for control wiring to the UVR coil and the auxiliary terminals.