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Power ratings for Danotherm CCH resistors with natural convection range from 80 to 570 W. When mounted on a water-cooled plate, the power ratings improve to 500 to 2500 W. The working voltages are UL: 600 VAC / 850 VDC. Depending upon resistance, the overload factor ranges from 4 to 25 times the nominal power rating over 5-second pulse/120s. Protection ratings for CCH resistors are IP54/IP65.