Four poles, busbar connection on the front terminals, and no overload or short-circuit protection inside the device; this is a disconnect-only switch, meant for isolation and load-breaking under fault-free conditions. Two HQ auxiliary contacts report the main contact position back to a PLC or status lamp.
The 3VA1225-1AA42-0DC0 measures 140 mm wide by 158 mm tall by 70 mm deep — a compact footprint for a 250 A disconnect. Front terminals accept busbar connections, so it integrates into a busbar distribution system rather than individual cable lugs. The UVR coil draws from the control circuit; verify the supply matches the 208-230 V AC 50/60 Hz rating before wiring.
Above that, it derates: 243 A at 55 °C, 237 A at 60 °C, 230 A at 65 °C, and 223 A at 70 °C.