OSRAM NAV-T 70W SUPER 4Y E27 High-Pressure Sodium Lamp

Streetlight maintenance engineers and warehouse managers often seek a lamp that balances output, efficiency, and durability. The OSRAM NAV-T 70W SUPER 4Y meets that need with a robust 70W high-pressure sodium design. It produces a warm, golden-white light that cuts through fog and rain effectively, making it a common choice for roadways, parking lots, and industrial bays. With an E27 screw base, installation is straightforward in compatible luminaires.

Key specifications

• Lamp type: High-pressure sodium
• Wattage: 70 W
• Base type: E27
• Luminous flux (initial): 6600 lm
• Luminous efficacy (initial): 94 lm/W
• Colour temperature: 2000 K
• Colour rendering index (CRI): Ra 25
• Rated lifetime (L70/B50): 32,000 h
• Operating voltage (lamp): 85 V
• Operating current (lamp): 0.9 A
• Dimmable: Yes (with suitable control gear)
• Operating position: Universal (p45)
• Ignition time: < 30 s
• Run-up time to 90% light: < 4 min
• Hot re-ignition time: < 1 min
• Energy efficiency class: A+
• Mercury content: 10.5 mg
• Lamp shape: Tubular (T46)
• Outer bulb: Clear
• UV filter: Yes

Why choose it

The NAV-T 70W SUPER 4Y is engineered for longevity and consistent output. With a 32,000-hour rated life, it reduces replacement frequency and maintenance costs, especially in hard-to-reach installations. Its high luminous efficacy of 94 lm/W converts electricity into light efficiently, while the 4-year lifespan (when operated under normal conditions) offers predictable service. The lamp is dimmable, providing flexibility to adjust lighting levels according to demand.

Ideal use cases

• Street and pathway lighting
• Industrial and warehouse lighting
• Parking lots and security lighting
• Floodlighting for large areas

Good to know

This lamp contains mercury (10.5 mg) and must be disposed of in accordance with local regulations. It requires a suitable control gear or ballast for operation and is not compatible with standard household dimmers. Always handle the lamp by its base to avoid damaging the quartz arc tube.