3 Way Slide Dimmer. Rated working Power: 600W. Rated working voltage: 120V 60Hz. Insulation Resistance: 10MS1 (DC500V). Withstand Voltage: 1500 (AC). Mechanical Life: 40,000 times (one reciprocating time for each switch). Rubber shell fire rating: UL94-V2. Creep age distance: 3mm. Electrical clearance: 1.2mm between live parts and 3mm between live parts and other parts. Cable Specification: 18AW. Working Temperature: -20°C-60°C.