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Switches & Relays

Switches and relays are electronic components that are used to control the flow of electrical current in a circuit. A switch is a simple device that has two or more conductive contacts that can be opened or closed to allow or interrupt the flow of electrical current.  Switches are available in many different configurations, including toggle, push-button, rocker, and slide. A relay is an electrically operated switch that uses an electromagnet to open or close a circuit. Relays are used to control the flow of electrical current in a circuit remotely or automatically.

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20mm Knob - Black Plastic Aluminium Insert - Folders
$4.30

20mm Knob - Black Plastic Aluminium Insert

Folders

Aluminium insert in top, easy to see pointer1 knob per pack Specifications: Colour / Finish Black Colour Coded (Insert/Mar...

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$4.30 - $4.30
$4.30
$4.30
$4.30 - $4.30
$4.30
20mm Metric Knob - Black - Folders
$3.50

20mm Metric Knob - Black

Folders

Push on metric knobs, which suit our new small 9mm mini potentiometers.- Will fit all standard metric shafts.- 20mm (AT BASE) X 16mm (AT TOP) ...

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$3.50 - $3.50
$3.50
$3.50
$3.50 - $3.50
$3.50
27mm Knob - Black Plastic Aluminium Insert - Folders
27mm Knob - Black Plastic Aluminium Insert - Folders
$5.20

27mm Knob - Black Plastic Aluminium Insert

Folders

- All have white pointers- 0.25/6.3mm shafts.1 knob per pack Specifications: Colour / Finish Black Colour Coded (Insert/Ma...

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$5.20 - $5.20
$5.20
$5.20
$5.20 - $5.20
$5.20
White Push On Style Knob - Folders
$1.85

White Push On Style Knob

Folders

These knobs just push on to a standard 0.25 (1/4) shaft. - No more messy screws. - Complete with coloured cap. Specifications: Colour /...

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$1.85 - $1.85
$1.85
$1.85
$1.85 - $1.85
$1.85
Blue Push On Style Knob - Folders
$1.85

Blue Push On Style Knob

Folders

These knobs just push on to a standard 0.25 (1/4) shaft. - No more messy screws. - Complete with coloured cap. Specifications: Colour /...

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$1.85 - $1.85
$1.85
$1.85
$1.85 - $1.85
$1.85
Red Push On Style Knob - Folders
$1.85

Red Push On Style Knob

Folders

These knobs just push on to a standard 0.25 (1/4) shaft. - No more messy screws. - Complete with coloured cap. Specifications: Colour /...

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$1.85 - $1.85
$1.85
$1.85
$1.85 - $1.85
$1.85
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