Carlo Gavazzi RGC2P60V25C1DM Solid State Relays 2-pole DIN-rail mount SCR, Proportional control (1x FC) with monitoring, Operating voltage (Ue): 180 - 660 Vac (1200 Vp), Rated current (Ie): 25 Aac, Input: 0 - 5 / 1 - 5 / 0 - 10 Vdc, External supply: 24 Vdc/Vac, Built-in overvoltage protection