Sylvania RefLED Superia Retro MR16 GU5.3 6W 36° 12V – glass, replaces 50W

Superia class — for professional use

Sylvania's Superia series is a premium classification that distinguishes itself from the standard RefLED Retro collection with the following improvements:

• Service life 25,000 h — 67% longer than standard Retro (15,000 h)
• Switching cycles over 100,000 — double that of standard Retro (50,000)
• 5-year warranty — longer than standard 2–3 year LED warranties
• 3 color temperature variants (3000K, 4000K, 6500K) — the same lamp for all needs

This makes Superia an ideal choice for spaces where the lamp is in constant or frequent use — hotels, restaurants, shops, offices, showrooms, and industrial lighting.

MR16 size with 44 mm diameter

This lamp is a compact MR16 version — slightly smaller (44 mm) than a standard MR16 (51 mm), but retains MR16 compatibility with its GU5.3 base. In practice, this means the lamp fits both:

• Standard MR16 holders (51 mm housing)
• Slightly smaller housing apertures (44 mm)

This increases flexibility — the same lamp works in more luminaires.

Requires a 12V transformer

This is a 12V low-voltage lamp that requires a 12V transformer to operate. It works with both magnetic and electronic transformers, but compatibility with electronic transformers depends on the specific model of the transformer. The most common compatible brands are Helvar, Tridonic, Osram, Ledvance, and Vossloh-Schwabe.

You can find compatible transformers in the Electrical Supplies → Transformers category.

Check the transformer power

The transformer power must match the lamp (or the total power of several lamps). For one 6W lamp, the transformer can be a minimum of about 7.5W (reserve a small margin). For multiple lamps:

• 5 lamps = 30W → transformer at least 35W
• 10 lamps = 60W → transformer at least 70W
• 20 lamps = 120W → transformer at least 150W

Glass body — premium quality that looks authentic

Unlike standard plastic LED lamps, this Sylvania RefLED Superia Retro features a full-glass body — the same material as traditional halogen lamps:

• More even light distribution than plastic
• No yellowing over time
• Halogen-like appearance — fits seamlessly into traditional luminaires
• Withstands higher temperatures than plastic

Replaces 50W GU5.3 halogen — 88% energy savings

This 6W LED produces the same light output as a traditional 50W GU5.3 halogen. Energy savings are approximately 88%, and the service life is:

• 50W GU5.3 halogen: 2,000–4,000 h
• This Sylvania Superia: 25,000 h — 6–12 times longer

Furthermore, over 100,000 switching cycles make this an excellent option for luminaires that are frequently switched on and off — e.g., motion sensor lights, bathrooms, storage rooms, shop display lights.

This lamp is not dimmable

Do not install the lamp in a luminaire equipped with a dimmer. The lamp may flicker, remain on at full power, or be damaged.

36° beam angle — wide spotlight

This lamp's 36° beam angle is in the flood category — a wide spotlight suitable for:

• General lighting in small and medium-sized spaces
• Mood lighting in hotels, restaurants, and bars
• Product display lights in shops and showrooms
• Offices and meeting rooms
• Smaller spotlights

Typical applications — professional use

• Mood lighting in hotels and restaurants
• Product displays and showrooms in shops
• Offices and meeting rooms
• Staff areas in museums and galleries
• Modernization of older GU5.3 spotlights
• Household interior and accent lighting

Installation checklist

1. Check that the luminaire has a GU5.3 base (not GU4 or GU10)
2. Check that a 12V transformer is in use (magnetic or electronic)
3. Check that the transformer power is sufficient for the total power of the lamps
4. Check that the luminaire dimensions (44 mm diameter, 50 mm length) are suitable
5. Check that the luminaire does not have a dimmer
6. Turn off the power before installation — do not touch the lamp glass with your fingers
7. Install the lamp in place and switch on the power

Also, take a look at the other GU5.3 LED spotlights in our range.