# Osram HO CONSTANT 54W T5 Fluorescent Bulb, G5 Base, 4800 lm, 4000K Cool White

**URL:** https://aio.lv/en/product--osram-4008321873842--12450051
**Data updated:** 2026-05-18 02:53 (EEST)
**Category:** LED Bulbs
**Manufacturer:** osram
**Manufacturer code:** 4008321873842
**EAN:** 4008321873842
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 31.99 €
**Prices and availability valid until:** 2026-07-23 23:59
**Price without VAT (21%):** 26.44 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--osram-4008321873842--12450051

## Delivery options

| Delivery method | Delivery time | Cost |
|---|---|---|
| Office pickup (2b. Kengaraga str., Riga, Latvia, LV-1063) | 14.07.2026 | free |
| Pickup points | 17.07.2026 | 1.89 EUR |
| Courier delivery to door | 17.07.2026 | 4.99 EUR |

## Summary description

The Osram HO CONSTANT 54W T5 fluorescent bulb features a G5 base and delivers a luminous flux of 4800 lm with a cool white light color. Designed for high-efficiency lighting, it offers a color rendering index of 80 and a long service life of up to 24,000 hours. This reliable T5 lamp is ideal for professional and commercial lighting applications requiring consistent performance and energy efficiency.

## Long description

The Osram HO CONSTANT 54W T5 fluorescent bulb is a high-performance lighting solution designed for environments where consistent light output is critical. With a power rating of 54W and a standard G5 base, this T5 tube provides a luminous flux of 4800 lm, ensuring bright and reliable illumination. It emits a cool white light at 4000K, making it suitable for professional settings that require clarity and focus. Engineered for durability, it offers a long service life of up to 24,000 hours, reducing the frequency of maintenance and replacements.
Advantages
This fluorescent bulb stands out due to its ability to maintain excellent luminous flux across a wide range of ambient temperatures, from +5 to +70 degrees Celsius. It is specifically designed to provide stable performance in outdoor lighting fixtures or luminaires with limited thermal insulation. The lamp features high luminous efficacy and maintains 90 percent of its initial lumen output throughout its entire service life. Furthermore, it is fully dimmable and serves as a direct, easily exchangeable replacement for conventional T5 lamps, ensuring seamless integration into existing lighting systems.
Suitable for
Industrial lighting facilities
Street and public area lighting
Environments with extreme temperature fluctuations
Professional commercial spaces
This bulb may not be suitable for residential applications where a warmer light color is preferred, as its 4000K cool white output is optimized for professional and industrial visibility. Additionally, it requires a compatible electronic control gear to operate correctly and achieve its rated service life.
Key specifications
Power: 54W
Base type: G5
Bulb shape: T5
Luminous flux: 4800 lm
Color temperature: 4000K (Cool White)
Color Rendering Index (CRI): 80
Average lifetime: 24,000 hours
Dimmable: Yes
How to use
Installation should be performed by a qualified professional to ensure safety and compatibility with the existing fixture. The bulb is designed for use with compatible electronic control gear, such as the QUICKTRONIC system, to guarantee optimal performance and longevity. Simply insert the G5 base into the corresponding socket of the T5 fixture, ensuring a secure connection. Once installed, the lamp is ready for operation and can be integrated with dimming controls if the fixture supports this functionality.
What to consider before purchase
Verify that your existing fixture is compatible with T5 G5 base lamps.
Ensure the electronic ballast in your fixture supports the 54W power requirement.
Confirm that the 4000K cool white color temperature meets your specific lighting needs.
Check if your installation environment falls within the recommended temperature range for optimal performance.
Usage recommendations
For maximum service life and consistent light output, it is recommended to operate this lamp in conjunction with high-quality electronic control gear. Avoid frequent switching cycles to preserve the integrity of the electrodes and ensure the full 24,000-hour lifespan is achieved.

## Specifications

| Feature | Value |
|---|---|
| Rated luminous flux (EM 25°C) | 4850 lm |
| Rated luminous efficacy (EM 25°C) | 90 lm/W |
| LLMF EM 2000h rated | 95 % |
| LLMF EM 4000h rated | 93 % |
| LLMF EM 6000h rated | 92 % |
| LLMF EM 8000h rated | 90 % |
| LLMF EM 12000h rated | 90 % |
| LLMF EM 16000h rated | 90 % |
| LLMF EM 20000h rated | 89 % |
| Luminous flux (EM 30°C) | 5000 lm |
| LLMF HF 2000h rated | 99 % |
| LLMF HF 4000h rated | 99 % |
| LLMF HF 6000h rated | 99 % |
| LLMF HF 8000h rated | 99 % |
| LLMF HF 12000h rated | 99 % |
| LLMF HF 16000h rated | 97 % |
| LLMF HF 20000h rated | 85 % |

### Performance

| Feature | Value |
|---|---|
| Fitting/cap type | G5 |
| Bulb power | 54 W |
| Luminous flux | 4800 lm |
| Light colour | Cool white |
| Colour temperature | 4000 K |
| Finish type | White |
| Dimmable | Yes |
| Color Rendering Index (CRI) | 80 |
| Bulb lifetime | 24000 h |
| Bulb size | T5 |

### Technical details

| Feature | Value |
|---|---|
| Mercury content | 2.3 mg |
| Colour code | 840 |

### Weight & dimensions

| Feature | Value |
|---|---|
| Length | 1149 mm |
| Diameter | 16 mm |

### Other features

| Feature | Value |
|---|---|
| Energy consumption (1000 hours) | 60 kWh |
| Energy efficiency class (old) | A+ |

## FAQ

### How much does the Osram HO CONSTANT 54W T5 Fluorescent Bulb cost, and is it available for purchase?

The price is 31.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 48 pcs. are in stock, and you can place your purchase right now with delivery across Latvia and Europe or choose pickup at the Riga collection point. We offer favorable purchase terms, including the option to split the payment into convenient monthly installments. Availability and price are updated in real time, so we recommend placing your order in advance.

### If I order this product today, when will I receive my order?

If you place your order today, delivery will be as fast and convenient as possible. You will be able to pick up your order on 14.07.2026 at the Riga pickup point or choose delivery across Latvia and Europe. We carefully inspect every purchase and pack it securely for safe transportation.

### What payment options are available?

AiO.lv offers several payment methods: Bank transfer, Bank cards on-line, Apple Pay, Google Pay. All transactions are 100% secure and encrypted.

### Can this product be purchased for a company (with VAT)?

Yes. AiO.lv works with legal entities in Latvia and across Europe. The product price already includes VAT. For certain product categories, as well as for companies from other EU countries with a valid VAT number, a 0% VAT rate may apply. We issue the invoice immediately after the order is placed, support electronic BIS invoices, and automatically generate all necessary accounting documents. You can complete the purchase for a company online — simply select the company profile and choose bank transfer as the payment method during checkout.

### What is the warranty period?

All osram products come with an official 2 Years warranty. It covers all manufacturing defects and malfunctions that may occur during use. The warranty is valid at all authorized osram service centers and through AiO.lv

### Can the product be returned after purchase?

Yes, you can return the product within 14 days of purchase if you bought it as a consumer (not a legal entity). Returns are possible without giving any reason — the main condition is that the product retains its original appearance and full set of accessories. We will make the process as simple and convenient as possible: just contact our customer support team, and we will help you arrange the return.

### Where should I contact for warranty service?

For warranty-related questions you can contact the AiO.lv (SIA VSPRO) customer support team. More information about warranty service: https://aio.lv/en/warranty

### How can I tell if this product suits my needs?

When making a choice, we recommend paying attention to the key features: fitting/cap type, bulb power, luminous flux, colour temperature, compatibility with your devices or usage conditions, material quality, functionality, and warranty terms. These characteristics will help you determine how well the model meets your needs.

## Image

https://aio.lv/img/cache/product/12450051/68777662_large.webp