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  • New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 1
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 2
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 3
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 4
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 5
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 6
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 7
    New itemTop seller   Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm 8

    Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm

    Code: SKU#158195013311649871
    Barcode:
    Price 2.90 € VAT incl.
    ( 2.40 € VAT excl. )

    T8 G13 fluorescent tube for service replacement: 18 W (60 cm), 36 W (120 cm), 58 W (150 cm), 4000 K and 6500 K. Remaining stock, boxes of 25 pcs.

  • Product description

    Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm

    T8 (26 mm diameter) fluorescent tube with G13 base – a service replacement for working luminaires with an electromagnetic ballast and starter or with an electronic ballast (ECG). Intended for service and facility maintenance companies, electricians and building operators who need to replace a failed tube without modifying the luminaire.

    Key point:
    New T8 fluorescent tubes can no longer be placed on the EU market, yet thousands of T8 luminaires in offices, warehouses and corridors are still in operation. A service company needs a tube of the same wattage, length and colour so that the luminaire and the whole line give uniform light – this is exactly what this product is for.
    Base / diameter
    G13 / T8 (26 mm)
    Wattage and length
    18 W – 60 cm · 36 W – 120 cm · 58 W – 150 cm
    Colour
    4000 K (840) · 6500 K (865)
    Packaging
    1 pc, box – 25 pcs
    Product status – remaining stock
    Since 24 August 2023 the EU no longer allows new T8 fluorescent lamps for general lighting to be placed on the market. We sell existing stock, so we recommend securing a reserve for facility maintenance in advance. Existing T8 installations may continue to be used.

    Operating principle

    The tube is fitted into the luminaire's G13 lampholders: insert the pins into both ends and rotate 90° until it locks. The luminaire is connected to the 230 V AC mains, and the tube is started and current-limited by a ballast with starter or by an electronic ballast.

    During start-up the starter briefly preheats the electrodes, the ballast produces a voltage pulse and the discharge ignites. The tube then runs at its operating voltage (18 W – approx. 59 V, 36 W – approx. 103 V, 58 W – approx. 110 V according to IEC 60081), while the ballast or ECG limits the current.

    The result – the luminaire is back in service without any modifications: the same lampholders, the same ballast, the same light colour as the other tubes.

    Why a T8 G13 tube for service work?
    A failed tube is replaced in a minute, with no need to change the luminaire, ballast or wiring, or to agree a retrofit with the client. A matching colour code (840 or 865) keeps lighting uniform across the room.

    Technical specifications

    Product type Tubular fluorescent lamp T8
    Base G13 (2 pins at each end)
    Tube diameter 26 mm (T8)
    Wattage 18 W, 36 W, 58 W
    Colour temperature 4000 K (840, neutral white), 6500 K (865, cool daylight)
    Nominal length 18 W – 60 cm, 36 W – 120 cm, 58 W – 150 cm
    Lamp operating voltage (IEC 60081) 18 W – approx. 59 V, 36 W – approx. 103 V, 58 W – approx. 110 V
    Supply 230 V AC only via a ballast with starter or via an electronic ballast (ECG)
    Starter (EM ballast) S10 – single lamp; S2 – two 18 W lamps in series (tandem)
    IP rating Not applicable to the lamp – determined by the luminaire
    Manufacturer PATRON (18 W 6500 K, 36 W 4000 K, 58 W 4000 K)
    Packaging 1 pc; box – 25 pcs
    Contains Mercury – take used lamps to a WEEE collection point

    Variants:

    Variant Length Colour code Starter (EM)
    18 W 4000 K 60 cm 840 S10 / S2 for tandem
    18 W 6500 K 60 cm 865 S10 / S2 for tandem
    36 W 4000 K 120 cm 840 S10
    58 W 4000 K 150 cm 840 S10

    Main functions

    • Direct replacement – fits existing T8 G13 luminaires without any changes.
    • Standard lengths – 60, 120 and 150 cm match most T8 luminaires.
    • Two colours – 840 for offices and corridors, 865 for workshops and warehouses.
    • EM and ECG compatible – works with a ballast and starter or with an electronic ballast.
    • Boxes of 25 pcs – convenient for facility maintenance and keeping a reserve.

    Where is it used?

    • Recessed and surface-mounted T8 office luminaires
    • Warehouses, production and technical rooms
    • Corridors, stairwells, basements
    • IP65 sealed luminaires in garages and workshops
    • Schools, clinics and public buildings
    • Linear luminaires in retail areas and warehouses

    Use by need

    For a service company.
    Quickly replaces failed tubes on site and keeps a reserve until the client decides on a retrofit.
    For a building manager.
    Maintains uniform lighting without investing in new luminaires or extra work.
    For an electrician.
    Gets an exact replacement by wattage, length and colour code, plus starters in the same order.

    Practical use

    If one 840 tube has failed in a 4×18 W recessed office luminaire, replace it with an 18 W 4000 K tube, and if the luminaire has an EM ballast, replace the S2 starter as well. The whole luminaire gives uniform light again without changing the luminaire or the ballast.

    When is it worth switching to LED T8?

    If many tubes are replaced on a site or luminaires operate for long hours, consider LED T8 tubes: the same G13 base, roughly half the power, no mercury.

    Important: an LED T8 is installed in a luminaire with an EM ballast by replacing the starter with an LED starter (fuse), while a direct-mains LED T8 requires removing the ballast and starter according to the LED tube wiring diagram. Do not mix fluorescent and LED tubes in one luminaire.

    Pros

    • Direct replacement without modifying the luminaire
    • Standard T8 lengths and colour codes
    • Works with EM ballast and ECG
    • Boxes of 25 pcs for facility maintenance
    • In stock – fast delivery

    Cons / limitations

    • No new production for the EU market – remaining stock only
    • Contains mercury, requires proper disposal
    • Higher energy consumption than LED T8
    • In the cold (basements, outdoors) starts slower and gives less light

    Safety and installation notes

    • Switch off the luminaire supply before replacing the tube.
    • Never connect the tube directly to 230 V mains – only via a ballast with starter or an ECG.
    • In EM luminaires it is advisable to replace the starter together with the failed tube.
    • Collect a broken tube while ventilating the room, do not handle it with bare hands and do not use a vacuum cleaner.
    • Do not dispose of used tubes with household waste – take them to a WEEE collection point.

    Quick selection guide

    G13 | T8 | 26 mm
    18 W | 60 cm
    36 W | 120 cm
    58 W | 150 cm
    840 | 4000 K
    865 | 6500 K
    Suitable when you need to:
    • Replace a failed tube in a working T8 luminaire
    • Keep the same colour as the other tubes
    • Hold a reserve for facility maintenance
    Check before use:
    • Wattage and length on the old tube or luminaire label
    • Colour code (840 or 865)
    • Whether the luminaire has an EM ballast (starter needed) or an ECG
    Important reminder: T5 (16 mm, G5) tubes are not interchangeable with T8, and LED T8 is not a direct replacement without changing the starter or ballast.

    FAQ

    Will it fit my luminaire?
    Yes, if the luminaire has T8 G13 lampholders and the wattage and length match (18 W – 60 cm, 36 W – 120 cm, 58 W – 150 cm).
    Do I need a starter?
    With an EM ballast, yes: S10 for a single lamp, S2 for two 18 W lamps in tandem; with an ECG no starter is needed.
    What is the difference between 840 and 865?
    840 is neutral white 4000 K, 865 is cool daylight 6500 K; it is better not to mix them in one luminaire.
    Can I buy by the box?
    Yes, a box holds 25 pcs; for larger quantities please send a price enquiry.
    Are T8 tubes banned?
    New T8 tubes can no longer be placed on the EU market, but existing stock may be sold and existing installations may be used.
    What should I do with a used tube?
    Take it to a WEEE collection point, as the tube contains mercury.

    Fluorescent lamp T8 | G13 | 18W | 36W | 58W | 4000K | 6500K | 60, 120, 150 cm

    T8 G13 fluorescent tube 18 W, 36 W and 58 W, 4000 K and 6500 K – a service replacement for working T8 luminaires in offices, warehouses and technical rooms. Remaining stock, boxes of 25 pcs, together with starters and LED T8 alternatives.

    Published: 2026-11-01 · Data verified against supplier specification: 2026-11-01

    Illustrative image may have been created using AI. The appearance of the product may differ slightly from the image shown. Please refer to the technical specification.

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