Philips Advance Metal Halide Ballast - 175W | 120/277/347V AC | Pulse Start

Philips Advance Metal Halide Ballast (71A55A3-500D (176818)). This model belongs in a fluorescent lighting system with the lamp configuration stated for this ballast. It is specified for 175W MH; preserve the required lamp type and quantity when selecting the ballast. Its specified starting method is pulse start; compare it with the existing circuit rather than relying on the housing dimensions alone.

Use the 120/277/347V AC version only where the supply and control arrangement suit its electrical specification. The listed body dimensions are length 3.90 in., width 3.50 in., height 2.80 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.