Philips Master 250w HPI Plus 745 Lamp E40 - Cool White

Introducing the Philips MASTER HPI Plus 250 W/645 (or 745) BU E40 Cool White lamp – a high‑quality quartz metal halide light source designed for industrial, commercial and large‑area lighting. This lamp delivers 250 W power, uses a Giant Edison Screw (E40) base, and provides a cool white colour temperature of ~4 500 K (designated “645 BU” for cool white) with a colour rendering index (CRI) of 65. The luminous efficacy is around 66 lm/W, giving robust output suitable for high‑bay workshops, exhibition halls, airports or retail “big box” spaces.

Engineered for durability, this lamp has a nominal life of 20 000 hours under the specified burning position (Base Up or Hanging ±15°) and must be used in a totally enclosed luminaire with appropriate control gear (magnetic or electronic ballast designed for metal‑halide / high‑pressure mercury replacement).  It features Philips’ “Plus” 3‑band arc tube technology for stable colour and moderate lumen maintenance over life. Typical physical dimensions are ~91 mm diameter and ~226 mm length. Suitable for retrofit into luminaires previously using HPL or HPI‑T lamps (given compatible gear), the MASTER HPI Plus 250 W Cool White offers reliable, high output lighting for demanding applications.