GEFRAN Solid State Relay Model GRS-H with Heatsink, 40A Single Phase Static Relay, Solid State Relay with Current Range from 15A to 120A, Vdc/Vac Input Control with Push-in Connectors. The GRS-H heatsink solid state relay is suitable for industrial heating applications, requiring robust, compact and fast static contactors. Allows safe control of electrical heating elements. The single-phase static relay supports a current range from 15 to 120 amperes, a load voltage 480V, 600Vac and switching (ZC) at zero voltage pass. Surge Protections. The solid state relay input control is equipped with Vdc/Vac logic signal with push-in connectors. Cage clamps for power cables. The monostatic relay has the thermal alarm option with led and alarm output and interrupted load option with led and alarm output. The solid state relay dimensions are extremely compact, so it is suitable for industrial applications.