Installing THPG Rotary Switches

Part 1: Electrical Insert

The main part of the switch, which gets fitted first. Wire the connectors at the back of the unit to the existing electrical installation and then screw the unit into the back box with flat-head device screws (to enable the frame to sit flush on top of the unit).

Being an authentic replica product, the connectors on THPG switches are “old-fashioned” screw fittings. The live connector is copper-coloured.

THPG rotary switch wiring points

THPG 1-gang 2-way insert with 2-way wiring points

Picture of Installing THPG Rotary Switches from Swtch

THPG 1-gang rotary side view

Picture of Installing THPG Rotary Switches from Swtch

Fitting the insert to back box (a round Euro box in this case)

Picture of Installing THPG Rotary Switches from Swtch

Securing the insert to the back box

Part 2: Frame

As usual with European switches, the frame that provides the decorative cover over the insert is not permanently fixed to the unit. In THPG switches, it is held in place by a small front plate (see part 3).

Picture of Installing THPG Rotary Switches from Swtch

Correct alignment of the frame over the insert

Picture of Installing THPG Rotary Switches from Swtch

The frame should sit flush to the wall

Part 3: Front plate

The small round front plate is placed over the round opening in the frame and is secured with the included small hexagonal nut. Please make sure not to over-tighten the nut, which can cause deformation or cracking of the front plate.

The rotary knob/handle then slides onto the protruding central part of the insert and the included small flat-head screw goes into the centre slot of the handle. The last step of fitting the switch is simply tightening that screw, to secure the handle. Again, please don’t over-tighten anything – Bakelite, Duroplast and particularly Porcelain can crack or splinter easily.

Picture of Installing THPG Rotary Switches from Swtch

Frame, front plate and rotary handle (Bakelite)

Picture of Installing THPG Rotary Switches from Swtch

Aligning the front plate on top of insert and frame

Picture of Installing THPG Rotary Switches from Swtch

Securing the front plate with the supplied nut

Picture of Installing THPG Rotary Switches from Swtch

The rotary handle/knob is pushed onto the insert

Picture of Installing THPG Rotary Switches from Swtch

The centre screw is tightened to secure the handle

Removing the switch

With THPG switches you simply need to reverse the fitting process if removal is required. Loosen the small flat head screw in the centre of the rotary knob until it comes out. Remove the small nut which holds the front plate in place and take off front plate and frame.

Please note: Swtch sells beautiful and functional wiring accessories. But we are not qualified electricians. We are not able to give detailed installation advice or consultation, although we will always try to help you or your electrical installers.

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