Philips Advance LI501H4IC Hid Ballast Ignitor 100V Hps

Product Description

The PHILIPS ADVANCE LI501H4IC is a single-lamp HID ballast ignitor designed for High Pressure Sodium (HPS) lamp systems operating at 100 volts. It supports lamps rated from 150 to 400 watts, making it a versatile ignitor for a wide range of HPS fixture applications. The unit operates on a Constant Wattage Autotransformer (CWA) circuit with an R circuit configuration, providing stable lamp starting and consistent arc maintenance. Licensed electricians and lighting maintenance technicians install this component as part of a complete HID ballast assembly. At 0.42 pounds, it is a compact, lightweight component suited for both new installations and retrofit work.

This ignitor is used in commercial and industrial HPS lighting systems, including street lighting, parking lot fixtures, warehouse high-bays, and outdoor area lighting. Its 100-volt input rating and broad 150 to 400 watt lamp range make it applicable across multiple fixture configurations where a CWA R circuit topology is specified. It is a direct replacement or service component for HPS ballast assemblies requiring a compatible ignitor module.

Key Features

• Supports single-lamp HPS systems rated from 150 to 400 watts
• 100-volt operating voltage for standard HID ballast compatibility
• CWA (Constant Wattage Autotransformer) circuit type for stable wattage regulation
• R circuit configuration for reliable lamp ignition in HPS fixtures
• Lightweight at 0.42 pounds for easy handling and installation

Compatibility

Designed as an OEM-style replacement ignitor for single-lamp, 100-volt High Pressure Sodium HID ballast assemblies using a CWA R circuit configuration.

Installation Notes

Installation should be performed by a licensed electrician in accordance with the National Electrical Code (NEC). De-energize the fixture and verify zero voltage at the ballast terminals before handling any components. The ignitor must be matched to the ballast circuit type and lamp wattage to avoid lamp or ballast damage. Do not bypass or substitute the ignitor with a component of a different circuit type or voltage rating.