Rotary Dimmers by Forbes & Lomax

SKU: 1GR1/USA/U

Original price$400.00
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Model

Description

The Rotary Dimmer by Forbes & Lomax is a push-to-switch, rotate-to-dim lighting control based on the elegant nickel and brass switches of the 1930s. Simple, timeless, and refined. Can be mixed with Toggle Switches and push buttons on the same plate. 1–4 gang configurations.

Established in 1987, Forbes & Lomax is a UK-based heritage electrical brand recognized by architects and designers for refined switch and outlet design.

Specifications
  • Knob: Ø 20 mm (0.79")

Plate Sizes

  • 1 Gang: W 70 mm (2.76") x H 115 mm (4.53")
  • 2 Gang: 115 mm (4.53") x 115 mm (4.53")
  • 3 Gang: W 162 mm (6.38") x 115 mm (4.53")
  • 4 Gang: W 210 mm (8.27") x 115 mm (4.53")

Available Configurations

  • LED: Max. 120 W LED or 300 W Incandescent/Halogen (TRIAC)
  • 0-10 V (Linear): Max. 20 0-10 V Dimmable Drivers — contact us
  • Non-Dimming: Max. 720 W any load type (ON/OFF only) — contact us

Installation Notes

  • Rotary dimmers conform to UL 1472 and are certified to CSA C22.2 No. 184
  • TRIAC dimmer compatible with LED and Incandescent
  • Supplied as 3-way (can also be used as single pole). Only one dimmer per 3-way or 4-way circuit — other positions require toggle switches
  • LED dimmers include on-board programming for min/max dimming levels. Follow "optimizing your dimmer" instructions after installation and apply child lock to retain settings
  • Must be installed by a licensed electrician
  • Junction boxes must be recessed below the finished wall surface by at least 1/8"

For compatibility verification with higher wattage lights, transformer/driver-based fixtures, or non-replaceable LEDs, email lighting specifications before purchase.

Areas of application: light-duty commercial, residential.

Materials

Available Finishes

  • Unlacquered Polished Brass
  • Aged Brass
  • Nickel Silver
  • Brushed Stainless Steel
  • Antique Bronze
  • Lacquered Brushed Brass

Unlacquered Polished Brass and Aged Brass are living finishes that change colour over time. Lacquered Brushed Brass is a non-living finish and will not change colour. Wipe clean with a dry, non-abrasive microfiber cloth. Avoid chemical or alcohol-based cleaners.

Certifications & Standards
  • Rotary Dimmers, Toggle Switches, and Push Buttons can be configured on the same plate for a customized control solution. To guarantee compatibility, especially with higher wattage lights, lights with transformers or drivers, or fixtures with non-replaceable LEDs, please email or upload the light specifications before purchase. Custom configurations can be facilitated by contacting customer support and uploading the specifications via the button above.
  • Rotary dimmers conform to UL 1472 and are certified to CSA C22.2 No.184.
  • LED dimmers are Forward Phase Triac dimmers, designed to control up to 120W of LED bulbs or 300W of incandescent bulbs. If you are dimming any larger wattages, or dimming any lights that have transformers or drivers, or have permanently built-in LEDs, we recommend you email us specifications on the lights so we can make sure they are compatible.
  • LED have on-board programming features to enable you to adjust the minimum and maximum dimming levels and adjust the dimming characteristics. This is often required when dimming LEDs. Once you install your dimmer, we recommend you follow the “optimizing your dimmer” instructions and then apply the “child lock” to retain the settings. It is important to note that the dimmers will not work with all LED light fixtures and bulbs. If you have any questions regarding the compatibility of our dimmers with the light fixtures you are using, please contact us.
  • Incandescent dimmers can control up to 500W of incandescent or halogen bulbs.
  • Rotary Dimmers install into standard junction boxes but the boxes must be recessed below the finished wall surface by at least 1/8". Please refer to the Wallbox Assemble Diagram in the Installation Guide below. If you are installing into existing junction boxes, you will probably find the boxes are already recessed by at least this much but please check to make sure before placing an order.
Product Downloads

Finish Samples

Installation Notes

Pre-drilling or pre-milling for hardware components is not recommended until all items are received and measured.

There may be slight variations that could affect the installation of your hardware as many pieces are hand finished / fabricated.

View installation policy

Quiet control, precisely made.

Forbes & Lomax approaches electrical hardware with a focus on material clarity and restraint. Rooted in British design, the collection balances heritage craft with contemporary application, where brass, stainless steel, and glass are used for their inherent qualities.

Signature glass plates allow switches and outlets to visually recede, carrying through wall finishes with minimal interruption. Where the plate is expressed, it is resolved with equal precision, with clean lines, controlled proportions, and a considered finish palette. Solid metals are left unlacquered, allowing surfaces to oxidize and develop a natural patina over time.

Across toggles, dimmers, and power, each mechanism is defined by a quiet, articulated movement that emphasizes touch as part of the experience. The system is designed to integrate into refined interiors, supporting both traditional and contemporary contexts with consistency and restraint.

Principles

01

Architectural Integration
Plates recess into or pass through the wall plane. Every detail resolves flush so the interior finish carries uninterrupted.

02

Handwork and Origin
Each fitting assembled by hand in Britain in unlacquered solid metal — brass, bronze, nickel silver — hallmarked and traceable to the workshop.

03

Living Patina
Finishes are not sealed. They oxidize with age, matching the space they live in. The surface is not an end state; it is a continuing one.

04

System Versatility
Switches, outlets, dimmers, and plates share one material language and one tolerance standard. Specifications propagate across the range; substitutions stay consistent.
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