PHILIPS ADVANCE LI571H5 | 1000W M141 HID Ignitor | Oval Casing

The Philips Advance LI571H5 is a high-performance electronic pulse ignitor designed specifically for 1000W M141 Metal Halide ballast systems. This critical component provides the high-voltage pulse necessary to strike the arc in pulse-start HID lamps, ensuring reliable ignition and consistent starting performance. Featuring a durable oval-shaped casing and a high 105°C case temperature rating, the LI571H5 is built to withstand the demanding thermal conditions found in industrial and outdoor luminaires. Assembled in the USA, this ignitor is a professional-grade replacement part engineered for longevity and seamless integration with existing Philips Advance core-and-coil ballast kits.

Product Overview

The Philips Advance LI571H5 ignitor is the essential firing mechanism for high-wattage pulse start metal halide systems. Unlike traditional probe-start systems, pulse start HID relies on an external ignitor to deliver a high-energy ignition pulse that is separate from the ballast's open-circuit voltage. This leads to improved lumen maintenance and longer lamp life. The LI571H5 is designed for close-proximity installation, supporting a maximum distance of 5 feet from the ballast to the lamp. Its compact dimensions (4.75" length) allow it to fit within standard HID fixture gear trays, while its American-made quality ensures it meets stringent industrial safety and reliability standards.

• Precision Ignition: Optimized for the M141 ANSI circuit to provide clean, consistent lamp striking.
• High Thermal Tolerance: 105°C temperature rating prevents premature failure in hot, enclosed luminaires.
• Reliable Build: Assembled in the USA with high-grade internal components for superior pulse stability.
• Standardized Shape: The oval casing fits seamlessly into the pre-configured brackets of Philips Advance ballast kits.

Technical Specifications

• Brand: Philips Advance
• Model Number: LI571H5
• Lamp Wattage: 1000W
• ANSI Ballast Code: M141 (Metal Halide)
• Casing Shape: Oval
• Max Distance to Lamp: 5 Feet (1.5 Meters)
• Case Temperature Rating: 105°C (221°F)
• Dimensions: 4.75" (L) x 2.15" (D)
• Manufacturing: Assembled in USA

Safety & Installation Guide

• Wiring: Always refer to the wiring diagram on the ballast label before installation. Incorrect wiring can damage the ballast or the ignitor.
• Proximity: Do not exceed the 5ft maximum distance to the lamp, as the high-voltage pulse will dissipate, leading to non-starting or "cycling" lamps.
• Compatibility: Verify your ballast ANSI code is M141. Using this ignitor on a non-compatible ballast (e.g., M47) may result in component failure.
• Handling: Ensure the power is completely disconnected before replacing an ignitor to avoid contact with high-voltage ignition pulses.

Primary Applications

• Industrial High-Bays: Warehouse and manufacturing facility lighting using 1000W pulse start systems.
• Outdoor Sports Lighting: Stadium floodlights and athletic complex area lighting.
• Parking Lots: High-mast pole lighting requiring heavy-duty 1000W HID ignition.
• Municipal: Large-scale infrastructure and floodlighting projects.