The 2GX13 T5 Circline 55W 830 Warm White Circular Fluorescent Tube is a high-output circular replacement lamp designed for compatible fittings requiring a 55W T5 Circline fluorescent tube with a 2GX13 4-pin base.

Producing a comfortable 3000K Warm White (830) light, this circular fluorescent lamp provides strong, broad and even illumination from its compact ring-shaped design.

With an approximate 302mm ring diameter, this lamp is particularly suitable for compatible ceiling fittings, commercial luminaires and specialist circular fluorescent fixtures where the correct wattage, base and physical dimensions are important.

This lamp is ideal for replacing older or increasingly difficult-to-find 55W/830 2GX13 T5 Circline fluorescent lamps, including compatible Sylvania PENTRON and other equivalent 55W circular fluorescent lamps.

Key Features

• 55W circular fluorescent lamp
• T5 Circline design
• 2GX13 4-pin base
• 830 colour code
• 3000K Warm White
• Approx. 302mm ring diameter
• Approx. 4200 lumen class
• CRI approximately 80+
• Slim T5 circular tube design
• Broad and even light distribution
• High-output fluorescent lamp
• Suitable for compatible electronic control gear
• Ideal replacement for compatible 55W/830 2GX13 Circline lamps
• Suitable for residential, commercial and professional lighting applications

Technical Specifications

Compatible & Equivalent Lamp References

This 55W 830 2GX13 T5 Circline fluorescent lamp may be suitable as a replacement for equivalent circular lamps requiring:

55W • T5 • 2GX13 • 4-Pin • 830 • 3000K • Approx. 300mm

Sylvania Cross-Reference

A particularly useful replacement reference is:

Sylvania PENTRON Circline FC 55 830 HO

You may also find it identified as:

FPC55830HO

UPC 0046135207419

The Sylvania version uses the same important lamp format:

55W • T5 • 2GX13 • 830 • 3000K • approx. 4200 lumens

The published Sylvania version is approximately 299mm overall, while your NZ Lights lamp is listed at approximately 302mm ring diameter.

Because circular lamp dimensions can vary slightly between manufacturers, always compare the available space in the fitting and your existing lamp before ordering.

Important: Manufacturer references are provided as a replacement and identification guide. Always confirm the wattage, base, pin configuration, colour temperature and physical dimensions before ordering.

Common Applications

The 2GX13 T5 55W 830 Circline fluorescent lamp is commonly used in compatible:

• Commercial ceiling fittings
• Offices
• Retail stores
• Hotels and hospitality environments
• Restaurants
• Residential ceiling fittings
• Apartment common areas
• Public buildings
• Reception areas
• Work areas
• Large circular luminaires
• Specialist fluorescent fixtures

The circular design distributes light evenly around the lamp, providing strong illumination without requiring the length of a conventional straight fluorescent tube.

How to Identify the Correct Replacement

Before ordering, check the markings printed on your existing circular fluorescent lamp.

For this product, look for:

55W + T5 + 2GX13 + 830 + 3000K

You may also find:

55W/830

FC 55 830 HO

FPC55830HO

2GX13

830

3000K

or another manufacturer's catalogue number.

Also check the diameter of your existing circular tube.

For this NZ Lights product:

Ring Diameter: Approx. 302mm

What Does 830 Mean?

The 830 colour code is an important identifier when replacing fluorescent lamps.

8 = CRI approximately 80+

30 = approximately 3000K colour temperature

Therefore:

830 = CRI 80+ / 3000K Warm White

This is particularly useful when identifying an older lamp because 830 may be printed on the fluorescent tube without 3000K being shown separately.

If your existing lamp says 55W/830, it indicates a 55W lamp with approximately 3000K Warm White light.

You should still confirm the 2GX13 base and physical diameter before ordering.

2GX13 4-Pin – Important Compatibility Information

This product uses a 2GX13 4-pin base.

Please check the connector on your existing circular fluorescent lamp before ordering.

For this product, confirm:

✓ 55W

✓ T5 Circline

✓ 2GX13

✓ 4-Pin

✓ 830

✓ 3000K Warm White

✓ Approx. 302mm ring diameter

Do not select a replacement based only on the circular shape or wattage.

830 / 3000K Warm White Light

The 830 / 3000K Warm White colour provides a comfortable warm-neutral light appearance.

It is warmer than 4000K Cool White but less yellow in appearance than a typical 2700K / 827 lamp.

Common applications include:

• Hotels
• Restaurants
• Hospitality spaces
• Residential interiors
• Reception areas
• Retail stores
• Apartment common areas
• Commercial interiors
• General-purpose ceiling lighting

If maintaining the same colour appearance as your existing installation is important, check whether 830 or 3000K is printed on your old lamp.

High-Output 55W Circline Lamp

The 55W T5 Circline format provides substantially more light than many smaller circular fluorescent lamps.

Comparable 55W/830 lamps produce around 4200 lumens, making this format suitable for larger ceiling fixtures and commercial applications requiring broad illumination from a single circular fluorescent source.

Always use the wattage specified for your existing fitting rather than substituting another Circline wattage based only on physical appearance.

Hard-to-Find 55W Circline Replacement

Traditional T5 circular fluorescent lamps are becoming harder to source as many fluorescent lamp ranges are phased out.

If your existing fitting remains operational, replacing the lamp with the correct 55W 2GX13 T5 Circline tube can allow you to continue using the fixture without replacing the complete light fitting.

Keep your old lamp until you have confirmed the replacement.

Need Help Finding the Correct Circline Lamp?

If you're unsure whether this 55W T5 2GX13 830 Circline lamp is the correct replacement, send NZ Lights a clear photo of your existing lamp showing the printed markings and connector/base.

If possible, also provide the outside diameter.

We can help identify the correct wattage, base, colour code, colour temperature and physical size required for your fitting.

Why Buy from NZ Lights?

NZ Lights specialises in replacement lamps and hard-to-find lighting products for residential, commercial and professional applications throughout New Zealand.

• Specialist replacement lighting range
• Hard-to-find Circline fluorescent lamps
• 2GX13 circular lamps available
• Replacement options for discontinued lamp ranges
• Multiple wattages and colour temperatures
• Single and bulk quantities available
• NZ-based product support
• Fast nationwide delivery
• Daily dispatch from Christchurch, New Zealand