Philips Advance Metal Halide Ballast - 39W Max | 120V AC | Pulse Start

The Philips Advance Metal Halide Ballast, model 71A5005-500DP (192609), is the component described here. The role of this model is to operate the corresponding fluorescent lamp arrangement within a compatible fixture. The 35/39W MH operating configuration distinguishes this ballast from versions intended for a different lamp count. Its specified starting method is pulse start; compare it with the existing circuit rather than relying on the housing dimensions alone.

The 120V AC supply specification must match the circuit serving this model. Compare length 4.20 in., width 1.70 in., height 2.20 in. with the available space for the ballast compartment, especially when retaining an existing enclosure or shade. 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.