# Sodium discharge lamp Philips MASTER SON-T PIA Plus 400W E40 — 55,800 lm, 2000 K, 283 mm

**URL:** https://aio.lv/en/product--philips-8711500179883--11241295
**Data updated:** 2026-03-20 09:48 (EET)
**Category:** LED Bulbs
**Manufacturer:** Philips
**Manufacturer code:** 8711500179883
**EAN:** 8711500179883
**Warranty:** 2 Years
**Availability:** Available for order
**Price:** 38.99 €
**Prices and availability valid until:** 2026-07-21 23:59
**Price without VAT (21%):** 32.22 EUR
**Can be purchased by legal entities:** Yes (invoice)
**Buy:** https://aio.lv/en/product--philips-8711500179883--11241295

## 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

High-pressure sodium discharge lamp Philips MASTER SON-T PIA Plus 400W with E40 screw base. Rated power 400 W, luminous flux 55,800 lm and warm 2000 K colour temperature. Dimensions: 48×48×283 mm; output current 4.5 A; AC input 85–115 V. Silver transparent envelope, intended for industrial, street or horticultural lighting where high lumen output and warm spectral output are required.

## Long description

The Philips MASTER SON-T PIA Plus 400W E40 is a high-pressure sodium discharge lamp designed for applications that require high lumen output and a warm colour rendering. The lamp delivers 55,800 lumens at a warm 2000 K colour temperature from a clear tubular outer envelope. With a rated power of 400 W, an output current of approximately 4.5 A and an AC input range of 85–115 V, this lamp is built for continuous operation in industrial, street and specialised horticultural installations where strong, long-range illumination is needed. The lamp measures 48 × 48 × 283 mm and uses an E40 screw base for easy installation into compatible luminaires.
Advantages
This sodium discharge lamp offers very high luminous efficacy for its class, producing a large luminous flux while maintaining a warm spectral output around 2000 K. The clear tubular outer bulb provides good directional light and helps maximise usable light output. The lamp is specified for reliable long-life operation under typical high-intensity discharge conditions, and its E40 screw base ensures compatibility with many industrial and street luminaires. The combination of high lumen output and warm colour temperature makes it suitable where visual comfort and long-distance illumination are both required.
Suitable for (tasks / use cases)
Street and roadway lighting requiring high lumen output
Industrial halls and outdoor site lighting
Horticultural installations where warm-spectrum high output is acceptable
Large-area floodlighting and security illumination
Key specifications
Rated power: 400 W
Luminous flux: 55,800 lm
Colour temperature: 2000 K (warm)
Base type: E40 screw
Envelope: clear tubular outer bulb (silver transparent appearance)
Physical dimensions: approximately 48 × 48 × 283 mm
Operating current: ~4.5 A
AC input range: 85–115 V
How to use
Install the lamp into a compatible luminaire with an E40 socket and a ballast or gear suitable for high-pressure sodium lamps of this rating. Ensure the luminaire and ballast are rated for 400 W operation and for the specified input voltage range (85–115 V). Allow appropriate warm-up time after ignition for the lamp to reach its full luminous flux and stable colour point. Observe manufacturer guidelines for safe installation, secure mounting of the luminaire, and wiring by a qualified electrician when required.
Usage recommendations
For optimal lifetime and performance, use with a properly rated ballast and in fixtures that provide adequate heat dissipation and protection from direct water ingress. Avoid frequent on/off switching to prevent reduced lamp life. Select luminaires and control systems that match the lamp’s warm colour temperature and high lumen output for intended visual tasks.

## Specifications

### Performance

| Feature | Value |
|---|---|
| Fitting/cap type | E40 |
| Bulb power | 400 W |
| Luminous flux | 55800 lm |
| Colour temperature | 2000 K |
| Product colour | Silver, Transparent |

### Power

| Feature | Value |
|---|---|
| Energy efficiency class | E |
| Output current | 4.5 A |

### Weight & dimensions

| Feature | Value |
|---|---|
| Weight | 0.18 kg |
| Height | 283 mm |
| Width | 48 mm |
| Depth | 48 mm |

### Other features

| Feature | Value |
|---|---|
| AC input voltage | 85 - 115 |
| Energy efficiency class (old) | A++ |

## FAQ

### How much does the Philips MASTER SON-T PIA Plus 400W E40 lamp cost, and is it available for purchase?

The price is 38.99 € (valid at the time of publication and already includes all taxes). The item is available for order — 16 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 Philips 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 Philips 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, energy efficiency class, 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.

### Where can I download the instructions for Philips MASTER SON-T PIA Plus 400W E40 lamp?

You can download the instructions in PDF format from the “Instructions” section on the product description page. The file contains complete information about installation, setup, and usage.

## Image

https://aio.lv/img/cache/product/11241295/62132099_large.webp