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3 Gang 2-Way 40-400W Leading Edge Dimmer - White Rounded Edge

£3399
The RRP is the manufacturer's recommended retail price of the item.
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Description

The Knightsbridge CU2163 is a 3-gang 2-way leading edge dimmer with a white rounded-edge faceplate, controlling incandescent lamps at 40-400W per gang or LED lamps at 3-100W per gang. Each rotary control has push on/off operation, allowing quick switching without turning the dial to minimum, and the dimming range is set by the leading edge circuitry to prevent lamp flicker at low levels.

Designed for living rooms, bedrooms and hospitality spaces where multiple lighting circuits need independent dimming control from a single wall position, the 3-gang layout suits rooms with three separate ceiling zones, three wall light circuits, or a mix of downlights, pendants and decorative fittings. The 2-way wiring allows the same circuits to be controlled from a second location (e.g. either end of a hallway or bedroom), with the dimming function available from both switch positions.

The 7mm-deep white thermoset resin plate has rounded edges and an anti-microbial coating tested to ISO 22196:2011, which inhibits bacterial growth on the surface between cleans. The plate requires a 35mm minimum back box depth and includes screw cap covers that hide the fixing screws once installed, giving a cleaner finish than exposed screw heads. The dimmer is certified to EN 60669-2-1 for residential use at 230V 50Hz and carries IP20 rating for indoor dry locations only.

Specification
Height 86 mm
Width 146 mm
Projection 7 mm
Min. Mounting Box Depth 35mm
Construction Thermoset resin
Finish White
IP Rating IP20
Primary Voltage 230V 50Hz
Anti-Microbial Properties 3rd Party Tested to ISO 22196:2011
Warranty 2
Downloads

Product Specification Sheet

Frequently Asked

What's the difference between leading edge and trailing edge dimmers?

Leading edge dimmers work by cutting the front of the AC waveform and are designed primarily for incandescent, halogen and some dimmable LED lamps. Trailing edge dimmers cut the rear of the waveform and are better suited to electronic loads including most modern LED and CFL lamps. This CU2163 is a leading edge dimmer rated at 3-100W per gang for LED — always check lamp manufacturer compatibility before pairing with LED bulbs.

Can I use this with any dimmable LED bulb?

Not all dimmable LED lamps are compatible with leading edge dimmers. Check the lamp manufacturer's specification or packaging to confirm compatibility with leading edge dimming circuitry. Incompatible lamps may flicker, buzz, or fail to dim smoothly across the full range.

What does 2-way mean?

2-way wiring allows the same lighting circuit to be controlled from two separate switch positions (e.g. either end of a hallway or at the top and bottom of stairs). The dimming function is available from both positions when correctly wired with a matching 2-way switch or dimmer.

What back box depth is required?

A 35mm minimum back box depth is needed to accommodate the dimmer module and wiring. The faceplate adds 7mm of projection from the wall once fitted.

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 CU2163 is a 3-gang 2-way leading edge dimmer with a white rounded-edge faceplate, controlling incandescent lamps at 40-400W per gang or LED lamps at 3-100W per gang. Each rotary control has push on/off operation, allowing quick switching without turning the dial to minimum, and the dimming range is set by the leading edge circuitry to prevent lamp flicker at low levels.

    Designed for living rooms, bedrooms and hospitality spaces where multiple lighting circuits need independent dimming control from a single wall position, the 3-gang layout suits rooms with three separate ceiling zones, three wall light circuits, or a mix of downlights, pendants and decorative fittings. The 2-way wiring allows the same circuits to be controlled from a second location (e.g. either end of a hallway or bedroom), with the dimming function available from both switch positions.

    The 7mm-deep white thermoset resin plate has rounded edges and an anti-microbial coating tested to ISO 22196:2011, which inhibits bacterial growth on the surface between cleans. The plate requires a 35mm minimum back box depth and includes screw cap covers that hide the fixing screws once installed, giving a cleaner finish than exposed screw heads. The dimmer is certified to EN 60669-2-1 for residential use at 230V 50Hz and carries IP20 rating for indoor dry locations only.

    Specification
    Height 86 mm
    Width 146 mm
    Projection 7 mm
    Min. Mounting Box Depth 35mm
    Construction Thermoset resin
    Finish White
    IP Rating IP20
    Primary Voltage 230V 50Hz
    Anti-Microbial Properties 3rd Party Tested to ISO 22196:2011
    Warranty 2
    Downloads

    Product Specification Sheet

    Frequently Asked

    What's the difference between leading edge and trailing edge dimmers?

    Leading edge dimmers work by cutting the front of the AC waveform and are designed primarily for incandescent, halogen and some dimmable LED lamps. Trailing edge dimmers cut the rear of the waveform and are better suited to electronic loads including most modern LED and CFL lamps. This CU2163 is a leading edge dimmer rated at 3-100W per gang for LED — always check lamp manufacturer compatibility before pairing with LED bulbs.

    Can I use this with any dimmable LED bulb?

    Not all dimmable LED lamps are compatible with leading edge dimmers. Check the lamp manufacturer's specification or packaging to confirm compatibility with leading edge dimming circuitry. Incompatible lamps may flicker, buzz, or fail to dim smoothly across the full range.

    What does 2-way mean?

    2-way wiring allows the same lighting circuit to be controlled from two separate switch positions (e.g. either end of a hallway or at the top and bottom of stairs). The dimming function is available from both positions when correctly wired with a matching 2-way switch or dimmer.

    What back box depth is required?

    A 35mm minimum back box depth is needed to accommodate the dimmer module and wiring. The faceplate adds 7mm of projection from the wall once fitted.

    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.