PLEASE NOTE THAT SWTCH IS CLOSED FOR HOLIDAYS FROM 17 TO 21 AUGUST 2026.

You can of course place orders online at any time, but there will only be one shipping day during this week, on Thursday 20 August.

There is no telephone support this week. We will respond to any email enquiries on Monday, 24 August.

If you have any questions about our product ranges, want to enquire about products you can’t find on our website, or need to place larger project orders, please use the form below.

POSTAL ADDRESS

Studio 2, Star Brewery
Lewes
East Sussex
BN7 1YJ
UK
(visits by appointment only)

what3words address: ///shifters.marbles.tentacles

THPG Bakelite Dimmer Square Sample (hire) from Swtch

PHONE ENQUIRIES

+44 (0)1273 977987

(Swtch sells light switches and sockets – if you are looking for a bicycle company of a similar name, we are not it!)

THPG Bakelite Dimmer Square Sample (hire)

THPG Bakelite Dimmer Square Sample (hire)

£40.00

The cost advertised is a deposit, which will be refunded if the sample is returned within 14 days.

THIS IS A USED SAMPLE AND MAY SHOW IMPERFECTIONS. IT MAY NOT BE FUNCTIONAL. PLEASE DO NOT INSTALL!

 



(if more items are ordered, they will ship in approximately 5-10 working days)

SKU: 100-THPGBADI-S-00-HIRE Category: Brand:
000

What you need to know

What’s in the box?

This switch set consists of an insert (including rotary and front plate, fixed with a small metal screw), and a square frame.


What does an electrician call this?

This is a 1-gang 2-way dimmer (Leading Edge or Trailing Edge)


Where is this used in the home?

A 1-gang 2-way dimmer is commonly used for controlling a single light source from one or two places.


 

Installation

THPG toggle switches require a bit more patience to wire up, simply because they are modelled on original designs and don't have the modern conveniences of push-contacts and encapsulated backplates.

Just follow the step-by-step pictures below or go to our THPG toggle switch installation page. Like all THPG switches, these have open screw terminals.

NB: We used a European round box in the step-by-step pictures, but the procedure is the same for square UK boxes.


Wiring

THPG rotary switch wiring points


Step-by-step


(Click gallery to enlarge. Number of gangs and/or finishes might vary)


Downloads

Installation Guide: Instructions THPG Rotary
Manufacturers instructions:


Please refer to our Installation section for more installation advice, manuals and helpful videos.

Dimensions

THPG Bakelite Dimmer Square Sample (hire) from Swtch

Does this cover a standard british back box?
Yes, this product covers standard square knockout and drywall boxes comfortably.


How deep does the back box need to be?
This insert is quite deep, it needs at least 45mm. Check the available options below.