Click Mode CMA140 400W dimmer switch polar white finish

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Click Mode CMA140 400W 1-Gang 2-Way Dimmer Switch - Polar White

400W leading edge dimmer switch for resistive and inductive loads in domestic installations. Single gang 2-way switching with press ON/OFF and rotate to dim control. Accepts 2x 1.5mm² cables via 3.5mm screw terminals with 0.4Nm torque specification. Suitable for 25mm minimum backbox depth. BS EN 60669-1 compliant with antimicrobial certified surface achieving 99.9% kill rate against bacteria and viruses. 20-year warranty on mechanical components, 1-year on electronics. Primarily designed for halogen and incandescent loads, limited LED compatibility.

Product Information

Stock Code CMA140
MPN —
GTIN —
Stock status: Out of stock
Price: £17.65
incl. VAT, 20% priced individually

Product Features
Load Rating 60-400W resistive & inductive loads
Gang Configuration 1-gang 2-way switching
Dimmer Technology Leading edge phase control
Control Method Press ON/OFF, rotate to dim
Terminal Type 3.5mm screw terminals, 0.4Nm torque
Cable Capacity 2 x 1.5mm² solid conductors
Backbox Depth 25mm minimum depth required
Plate Dimensions 86 x 86 x 9.5mm
Fixing Centres 60.3mm horizontal spacing
Operating Temperature -5°C to +40°C
IP Rating IP20 indoor use
Compliance BS EN 60669-1, CE/UKCA marked
Antimicrobial Certified 99.9% bacteria/virus kill rate
Warranty 20 years mechanical, 1 year electronics

Installation Requirements

Terminal Specification

3.5mm diameter screw terminals accept 2 x 1.5mm² solid conductors. Apply 0.4Nm torque for secure connection without conductor damage.

Backbox Compatibility

25mm minimum depth required for installation. Standard 35mm backbox recommended for optimal cable management and thermal performance.

Fixing Requirements

86 x 86mm faceplate with 60.3mm horizontal fixing centres. Compatible with standard UK electrical backbox mounting systems.

Load Applications

Halogen Lighting

Primary application for mains voltage halogen lamps and low-voltage halogen with electronic transformers. 60-400W capacity covers most residential installations.

Incandescent Loads

Traditional tungsten filament lamps up to 400W. Smooth dimming performance from leading edge phase control technology.

Inductive Compatibility

Suitable for inductive loads including some transformers and dimmable fluorescent ballasts within 400W rating and leading edge requirements.

Compliance Standards

Safety Standards

BS EN 60669-1 compliant household switch rating up to 440V/63A. CE/UKCA marking confirms electromagnetic compatibility and safety requirements.

EMC Compliance

BS EN 55015, BS EN 61000-3-2, BS EN 61000-3-3 certified for electromagnetic interference limits and harmonic emission standards.

Warranty Coverage

20-year warranty on mechanical switch components. 1-year warranty on electronic dimming components covering manufacturing defects and performance issues.

Frequently Asked Questions

  • What minimum backbox depth is required for the CMA140 dimmer?

    25mm minimum backbox depth required. Standard 35mm backboxes provide optimal installation clearance for cable management and heat dissipation.

  • Is the CMA140 compatible with LED lamps?

    Limited LED compatibility. Primarily designed for halogen and incandescent loads. May work with some high-quality LED lamps but not specifically designed for LED.

  • What cable sizes can connect to the terminals?

    Accepts 2 x 1.5mm² solid conductors per terminal. Use 3.5mm flat blade screwdriver with 0.4Nm torque specification for secure electrical connection.

  • Can I use this dimmer for bathroom lighting?

    IP20 rating suitable for dry indoor locations only. Not suitable for bathroom zones requiring IP44 or higher moisture protection ratings.

  • What loads are compatible with leading edge dimming?

    Designed for resistive and inductive loads 60-400W. Ideal for halogen transformers, incandescent lamps, and compatible dimmable fluorescent ballasts.