1000w Maxibright iPac Magnetic Ballast The 1000w Maxibright iPac Magnetic Ballast is a quality vented metal cased ballast that is used to start up and power a 1000 Watt HPS or MH lamp by using a traditional magnetic core and coil system alongside a digital Smart igniter. Maxibright’s high quality safe circuitry means that the Maxibright iPac Ballast will not restart a hot or faulty lamp and the built in thermal cut out also means that the ballast will shut down safely if it overheats. The 1000w Maxibright iPac Magnetic Ballast is built to last, and is covered by a massive 25 year guarantee! Please note – Ballasts run warm so should be located on a firm flat surface (not carpet) in a well ventilated area. To operate safely the wattage of lamps and refectors used should be matched to that of the ballast.