Osram Vialox NAV-T Super 4Y 250W E40 Bulb

The Osram Vialox NAV-T 250W E40 is a high-pressure sodium (HID) lamp designed for outdoor and industrial lighting applications. It features a tubular quartz bulb with an E40 socket, and is dimmable when used with compatible ballasts. The lamp emits a warm white light at 2,000 Kelvin with a luminous flux of 33,200 lumens and a lumen-per-watt ratio of 133, providing energy-efficient illumination for street lighting, parking facilities, and similar installations. With a power rating of 250 watts, it is built to deliver substantial brightness while operating within HID technology parameters. The lamp’s color rendering is in the range of RA 20–29. It is part of the NAV-T SUPER 4Y 220 (Vialox) family and carries the official designation NAV-T250WSUPER4YE40FLH1. Operational life is cited up to 32,000 hours, corresponding to about four years when burned for approximately 11 hours per day, and it complies with relevant ErP standards. The tube material is quartz glass to withstand high operating temperatures, and the lamp is compatible with dimming on appropriate equipment.

Features

• Dimmable with suitable ballasts
• 250 W power rating
• E40 high-pressure sodium lamp
• 2000 K warm white color
• 33200 lumen output

Technical specifications

• Shape: Tubular
• Socket: E40
• Lumens/watt: 133 lm/W
• CRI: RA 20–29
• Lifetime: up to 32,000 h (≈4 years at 11 h/day)
• ErP compliant