Philips Advance Metal Halide Ballast - 70W | 120/277/347V AC | Pulse Start

71A52A2-500D is the Philips Advance Metal Halide Ballast. When servicing a socketed fluorescent fixture, compare this model against the lamp schedule and supply before ordering. The 70W MH operating configuration distinguishes this ballast from versions intended for a different lamp count. The pulse start starting arrangement is part of the compatibility check for the installed lamp circuit.

Plan the electrical connection around this model’s 120/277/347V AC rating. The listed body dimensions are length 3.90 in., width 2.80 in., height 2.75 in.; use them when checking the available space around the ballast compartment. Follow the wiring diagram for this model when making the replacement connections.

Buying tip: Match the lamp designation, number of lamps and supply voltage to the existing ballast.