1500 Watt Master Blaster Galaxy Electronic Ballast Only. This Galaxy Electronic ballast features, an extruded aluminum housing that dissipate heat and keep the components cool. Detachable power cord allows easy change over. Comes standard with 240 volt cord. Resetable circuit breaker for short circuit protection. Lamp cord receptacle compatible with all Sun System reflectors and sockets. Operates both HPS & MH lamps. Completely silent and lightweight. Extremely efficient 99% power factor. Generator Ready. 240 volt only.