400W Magnetic Ballast

This 400W metal cased ballast converts mains electricity to the correct voltage and current to start-up and power a 400 Watt HPS or MH lamp by using a traditional magnetic core & coil system. This 400W ballast is reliable, well made with quality components, the unit is fuse protected against short circuits and it performs well for a very long time.

Like all core and coil type ballasts, this ballast runs warm in use and should be located on a flat, firm, surface (not carpet) in a well ventilated place and should never be covered.

The wattage of your ballast MUST match the wattage of the lamp you are using or there will be a high risk of fires or equipment damage. Always consider the inrush current drawn by a ballast when it is switched on. Your mains supply may trip out if several come on at the same time. Please note that in the event of an interruption to the mains supply, the ballast will not be able to restart the lamp until it has cooled back down.