Carlo Gavazzi RGC3A22A20KKE Solid State Relays 3-pole DIN-rail mount SSR, Zero-cross switching, Operating voltage (Ue): 42 - 242 Vac (800 Vp), Rated current (Ie): 20 Aac, Control voltage (Uc): 20 - 275 Vac / 24 - 190 Vdc, Built-in overvoltage protection