Ledvance T5 FC 40/55 EXTERNAL P 21.5W 830 2GX13 LED kruhová zářivka

The LED circular tube T5 FC 40/55 EXTERNAL P 21.5W 830 2GX13 is a modern LED light source designed as a replacement for traditional circular T5 fluorescent lamps with a 2GX13 base. It offers low energy consumption, high luminous output, and warm white light at 3000 K, suitable for standard interior lighting in offices, corridors, or commercial spaces.

This light source is circular and equipped with a single-sided LED module with high luminous efficacy of up to 134 lm/W and a luminous flux of 2900 lm at a power consumption of 21.5 W. The tube is designed to operate with a constant-current LED driver, either non-dimmable or DALI-dimmable, and does not operate directly on standard 230 V mains voltage or with an electronic ballast installed in the luminaire. It is compatible with drivers listed under related products, enabling an easy upgrade to both non-dimmable and dimmable LED lighting.

The light source has a long lifetime of up to 50,000 hours and is optimized for indoor use at ambient temperatures from −20 °C to +45 °C.

Installation method

The LED circular tube is intended for installation in luminaires with a 2GX13 base designed for an LED system with an external LED driver. Before installation, the luminaire must be disconnected from the mains and the existing components replaced with a compatible LED driver. It is not intended for direct connection to 230 V mains voltage or for use with electronic ballasts installed in the luminaire.

Recommended applications

• Residential and domestic spaces – comfortable warm light for everyday use
• Offices, corridors, and public interiors – uniform lighting with low energy consumption
• Shops, hotels, and restaurants – pleasant light for commercial environments
• Public buildings and technical areas – reliable light source with long lifetime

Key technical parameters

• Light source type: LED circular tube for LED driver
• Power consumption: 21.5 W
• Base: 2GX13
• Luminous flux: 2900 lm
• Luminous efficacy: 134 lm/W
• Correlated color temperature: 3000 K (warm white)
• Color rendering index (CRI): 80
• Ambient temperature: −20 °C to +45 °C
• Lifetime (L70/B50): 50,000 h
• Beam angle: 120°
• Dimmable: yes (when used with a compatible LED driver)
• Protection rating: IP20
• Diameter: 300 mm
• LED operation: with optional LED driver – non-dimmable / dimmable