Ballast for fluorescent lamps Dimensions: 32 x 41mm Voltage: 110V, 120V, 127V, 50Hz, 60Hz Wattage: 30W, 40W, 58W Ballastfor fluorescent lampsVoltage: 110V, 120V, 127V, 50Hz, 60Hz Wattage: 30W, 40W, 58/65W TW: 130Material: pure copper wire, silicone steel core Loss power loss, no noise Low temperature rising Ballast