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Knightsbridge 4W LED Emergency Bulkhead - IP65 Maintained/Non-Maintained

£2399
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Knightsbridge EMLED3L is a 4W LED emergency bulkhead providing 3-hour backup illumination in mains failure conditions, configured for either maintained or non-maintained operation. The fitting houses an integrated SMD LED array behind a prismatic polycarbonate diffuser, delivering 175 lumens in normal operation and 165 lumens in emergency mode at 6000K daylight white. The IP65-rated polycarbonate body withstands outdoor exposure and wet environments including covered external corridors, car parks and industrial loading bays.

Designed for exit route and emergency escape lighting in commercial, industrial and public buildings, the bulkhead mounts on walls or ceilings using a hinged gear tray that gives access to the internal battery and wiring without removing the unit from its fixings. A push-fit connector block simplifies installation, and the fitting ships with a self-adhesive legend kit allowing directional arrows or text to be applied to the diffuser face as required by BS 5266 emergency lighting standards.

The LiFePO4 (lithium iron phosphate) battery chemistry provides longer cycle life and more stable discharge characteristics than traditional NiCd or NiMH cells, maintaining reliable performance across the 3-year warranty period. Maintained mode keeps the LED lit during normal operation and switches to battery on mains failure; non-maintained mode keeps the LED off until mains failure triggers battery operation. The low 60mm projection suits installation in corridors and tight ceiling spaces where deeper fittings would intrude on headroom or door swing clearances.

Specification
Length 350 mm
Width 110 mm
Projection 60 mm
Construction Polycarbonate
Finish White
Class II
IP Rating IP65
Primary Voltage 230V 50Hz
Diffuser Prismatic
Emergency Maintained / Non-maintained / Switched
Lamp Technology SMD LED
Lamp Included Yes
Dimmable No
Beam Angle 90
CCT 6000 K
Light Colour Daylight
Lumens 175 lm
Lumens (Em. mode) 165 lm
Wattage 4
Efficacy 45.92 lm/W
CRI >80
Warranty 3
Downloads

Product Specification Sheet

Frequently Asked

What is the difference between maintained and non-maintained operation?

Maintained mode keeps the LED lit continuously during normal operation and switches to battery backup during mains failure. Non-maintained mode keeps the LED off under normal conditions and only illuminates when mains power fails. Configuration is set during installation via internal wiring connections.

How long does the battery last in emergency mode?

The LiFePO4 battery provides a minimum of 3 hours illumination at 165 lumens in emergency mode. The battery recharges automatically when mains power is restored, with typical recharge time of 24 hours.

Can this be used outdoors?

Yes. The IP65 rating protects against dust ingress and low-pressure water jets, making the fitting suitable for covered outdoor locations including car parks, external corridors, loading bays and covered walkways. It is not rated for full exposure to rain or submersion.

What are the legend stickers for?

The self-adhesive legend kit allows directional arrows or text (such as EXIT or emergency symbols) to be applied to the prismatic diffuser face, meeting BS 5266 requirements for emergency exit signage. The legends are visible when the LED is illuminated.

Shipping & Returns

Free worldwide delivery

Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

Returns

30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.

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    Description

    The Knightsbridge EMLED3L is a 4W LED emergency bulkhead providing 3-hour backup illumination in mains failure conditions, configured for either maintained or non-maintained operation. The fitting houses an integrated SMD LED array behind a prismatic polycarbonate diffuser, delivering 175 lumens in normal operation and 165 lumens in emergency mode at 6000K daylight white. The IP65-rated polycarbonate body withstands outdoor exposure and wet environments including covered external corridors, car parks and industrial loading bays.

    Designed for exit route and emergency escape lighting in commercial, industrial and public buildings, the bulkhead mounts on walls or ceilings using a hinged gear tray that gives access to the internal battery and wiring without removing the unit from its fixings. A push-fit connector block simplifies installation, and the fitting ships with a self-adhesive legend kit allowing directional arrows or text to be applied to the diffuser face as required by BS 5266 emergency lighting standards.

    The LiFePO4 (lithium iron phosphate) battery chemistry provides longer cycle life and more stable discharge characteristics than traditional NiCd or NiMH cells, maintaining reliable performance across the 3-year warranty period. Maintained mode keeps the LED lit during normal operation and switches to battery on mains failure; non-maintained mode keeps the LED off until mains failure triggers battery operation. The low 60mm projection suits installation in corridors and tight ceiling spaces where deeper fittings would intrude on headroom or door swing clearances.

    Specification
    Length 350 mm
    Width 110 mm
    Projection 60 mm
    Construction Polycarbonate
    Finish White
    Class II
    IP Rating IP65
    Primary Voltage 230V 50Hz
    Diffuser Prismatic
    Emergency Maintained / Non-maintained / Switched
    Lamp Technology SMD LED
    Lamp Included Yes
    Dimmable No
    Beam Angle 90
    CCT 6000 K
    Light Colour Daylight
    Lumens 175 lm
    Lumens (Em. mode) 165 lm
    Wattage 4
    Efficacy 45.92 lm/W
    CRI >80
    Warranty 3
    Downloads

    Product Specification Sheet

    Frequently Asked

    What is the difference between maintained and non-maintained operation?

    Maintained mode keeps the LED lit continuously during normal operation and switches to battery backup during mains failure. Non-maintained mode keeps the LED off under normal conditions and only illuminates when mains power fails. Configuration is set during installation via internal wiring connections.

    How long does the battery last in emergency mode?

    The LiFePO4 battery provides a minimum of 3 hours illumination at 165 lumens in emergency mode. The battery recharges automatically when mains power is restored, with typical recharge time of 24 hours.

    Can this be used outdoors?

    Yes. The IP65 rating protects against dust ingress and low-pressure water jets, making the fitting suitable for covered outdoor locations including car parks, external corridors, loading bays and covered walkways. It is not rated for full exposure to rain or submersion.

    What are the legend stickers for?

    The self-adhesive legend kit allows directional arrows or text (such as EXIT or emergency symbols) to be applied to the prismatic diffuser face, meeting BS 5266 requirements for emergency exit signage. The legends are visible when the LED is illuminated.

    Shipping & Returns

    Free worldwide delivery

    Free worldwide delivery on all orders over £99. International orders for third-party brand products may be subject to an additional courier surcharge based on volumetric weight, particularly on larger lighting fixtures — if a surcharge applies, our team will email you with the amount before dispatch and you can proceed or cancel for a full refund. See full delivery terms.

    Returns

    30-day returns window from delivery. As all our products are electrical or lighting goods, returned items must be inspected and recertified by a qualified electrician before resale — the cost of this inspection (25–40% of the item value) is deducted from your refund. Customers pay return shipping. Made-to-order, special-order and clearance items cannot be returned. See full returns policy.