Plated steel housing with a black PVC coating is sealed to an IP66 rating. Continuous rating: 65 amp. Intermittent rating: 120A make, 65A break at 10 seconds on, 30 minutes off. Insulated coil design electrically isolates the studs from the housing. SPST circuitry and normally open contacts. Two large 5/16″-24 copper power studs and two small #10-32 steel coil studs (control circuit) are heavy and durable. Flat bracket. Included hex nuts and lock washers are assembled. UL & CE approved. 24 volt.