Philips 287276 MSR575 HR

Philips Broadway MSR 575 HR  – 575W Hot Restrike Metal Halide | 48,000 lm | 6000K Daylight | 90 CRI | G22 | Professional Stage & Studio Lamp

The Philips MSR 575 HR 1CT/4 (order code 928097705115) is a 575W professional single-ended metal halide lamp from the Philips Broadway MSR Hot Restrike series, delivering 48,000 lumens at 6000K (Daylight) with a CRI of 90 on a G22 bi-post base. The Hot Restrike (HR) design enables hot re-ignition without requiring the full cool-down period of standard HID lamps, making continuous daylight-quality illumination available immediately following a power interruption. Philips P3 technology (Pinch Protection) allows operation at higher temperatures for extended service life consistency. Dimmable. Please verify fixture and ballast compatibility before ordering — this lamp is designed for professional entertainment equipment only.

Technical Specifications

Product Overview

The Philips MSR 575 HR is a 575W professional entertainment lamp in the MSR (Metal Spectral Radiation) Hot Restrike series, designed exclusively for use in professional fixtures: follow spots, moving head luminaires, and studio wash lights used in theatrical productions, concert touring, film and television studios, and live event applications. The 6000K daylight-balanced color temperature and 90 CRI are specifically suited to professional productions where color accuracy under camera and the ability to match daylight conditions are critical.

The key distinguishing capability of the HR series is hot re-ignition: standard HID lamps require a full cool-down (typically 5–15 minutes) before restarting after a power interruption. The HR design allows the lamp to be re-struck while still hot, restoring full output rapidly and avoiding the blackout period that standard MSR lamps experience during cool-down — a significant advantage for live broadcast and uninterrupted performance applications. Philips P3 (Pinch Protection) technology allows the lamp to operate at higher internal temperatures than previous designs, contributing to consistent light output throughout the 1,000-hour rated life.

This lamp requires a professional ballast and fixture specifically designed for 575W hot restrike metal halide lamps; it cannot be operated on standard commercial HID ballasts. Its universal burn position allows installation in any fixture orientation.

Compatible Applications

• Theatre and stage follow spots and moving head fixtures (concert touring and theatrical production)
• Film and television studio daylight fill and wash lighting (6000K camera-balanced)
• Professional photography studio lighting systems requiring high CRI and hot restrike
• Live event and large-scale architectural display lighting
• Any professional entertainment fixture specifically rated and designed for 575W MSR HR lamps

Before Ordering – Verify

• This lamp is designed exclusively for professional entertainment fixtures rated for 575W Hot Restrike metal halide lamps; it is not compatible with standard commercial or architectural HID ballasts and fixtures
• Confirm the fixture ballast is specifically designed for this lamp type; the hot restrike capability requires a ballast engineered to handle re-ignition of a hot arc; standard magnetic or electronic HID ballasts without HR capability will not function correctly
• Confirm the fixture uses a G22 bi-post base socket; the G22 bi-post (22mm pin center spacing) is specific to professional MSR lamps of this class
• Verify the order code before purchasing: the current Philips order code is 928097705115; the code 28727-6/287276 referenced in some distributor listings may be a legacy catalog number — confirm with your Philips/Signify representative that these refer to the same current production lamp before ordering based on the older code
• Nominal lumens are 48,000 lm; minimum specified luminous flux is 43,200 lm — for applications requiring tight flux consistency, note this spread when specifying

Safety and Handling Guidelines

• This lamp contains mercury; do not dispose of in municipal solid waste — recycle per Philips/local lamp recycling requirements. Per Philips datasheet: if a lamp breaks, ventilate the room for 30 minutes, remove parts with gloves, place in a sealed plastic bag, and take to local waste facilities. Do not use a vacuum cleaner.
• This lamp operates at extremely high temperatures and internal pressures; it must only be used in professional fixtures specifically rated for 575W MSR HR lamps, which provide appropriate mechanical containment
• UV radiation: this lamp emits high UV levels and must be operated in an enclosed fixture with UV-blocking glass to prevent serious skin and eye damage; do not operate in open-face fixtures
• Do not handle the quartz bulb with bare hands; skin oils cause localized hot spots that can cause premature failure. Clean with denatured alcohol if touched before installation
• Allow the fixture to cool adequately before relamping; the G22 base and fixture components reach extreme temperatures during operation
• Ensure fixture ventilation and cooling are adequate for the intended burn orientation; confirm fixture manufacturer’s requirements for any non-horizontal orientation

Compliance

• CE Mark: Yes (Philips/Signify)
• Contains mercury — subject to federal and state lamp disposal and recycling regulations
• For professional entertainment use only — not for general commercial or residential lighting applications

Ordering Information

• Order Product Name: MSR 575 HR 1CT/4
• Order Code: 928097705115
• Full Product Code: 871829122105000
• EAN/UPC: 8718291221050
• Pack Quantity: 1 per pack; 4 packs per outer box

For wholesale pricing, bulk availability, or help confirming the correct replacement lamp, contact ADL Supply at 1-800-235-3489.