Harmony Relay. Solid state relay for mounting on a heat sink or on a mounting plate. The low internal voltage drop reduces the heat loss. Switching voltage 1-150 VDC. Current 40 A. Pole 1. DC switching behavior. Control voltage 3.5-32 VDC. Display LED. Dimensions 45x59x35 mm. Hockey puck design. Terminals with telescopic screws make it easier to connect cables with eyelets and cable lugs. A heat analysis must be carried out when selecting the separate heat sink.