The H12 WD Series solid state relay offer ratings from 25A to 125A at load volatges between 48 → 660 Vac SCR output for heavy industrial loads This solid state relay design operates with a Vdc control voltage Random-fire output for inductive loads Panel mount hockey puck solid state relay design Screw and saddle clamp terminals 4000 Vrms isolation voltage Operating temperature range of -40 → +80 °C The housing material consists of thermally conductive epoxy which aids heat dissipation