What this 3VA2 breaker carries
The continuous current rating (In) is 160 A, with the long-time pickup (Ir) adjustable from 63 A to 160 A, so it covers a 63–160 A feeder or main breaker slot in a panel. Short-time pickup (Isd) is set from 1.5 to 10 times Ir, and instantaneous pickup (Ii) is fixed at 12 times In — a deliberate coordination curve for distribution panels where you need selective tripping downstream.
Integration notes
The UVR coil draws from a 24 V DC control supply — verify polarity and that the supply can hold the coil energized continuously; dropout voltage is typically below 18 V DC. The three auxiliary switches (HQ) provide N/O + N/C contact sets for PLC or SCADA feedback, wired to the breaker's accessory slot.