Switches

Switches are commonly used in electronic circuits. They enable control of the circuit by switching it on/off or controlling a range of other features.

How do they work?

Electronic switches are binary devices which sit within a circuit to control the flow of electricity. They work by interrupting the flow of electrons and switching the circuit on or off.

Switches contain terminals which connect to metal contacts. When the terminal and contact are touching, the switch is closed and the current can pass through. When the terminal and contact are not touching, the switch is open and the current cannot pass through the circuit.

What are Poles Throws?

The number of circuits controlled by a switch is referred to as "poles". The number of positions that the switch can adopt is called "throws". The combinations of these are:

  • SPST (Single Pole Single Throw)
  • SPDT (Single Pole Double Throw)
  • DPST (Double Pole Single Throw)
  • DPST (Double Pole Double Throw)

What types of switches are there?

The type of switch you require depends on the connections you wish to make within your circuit. Switches are often grouped by the way they are operated, for example, rocker switches that rock side to side. Alternatively, they are classified by their application, for example, keypad switches are used with keypads. Here are some examples of switch types:

  • Detector
  • DIP/SIP
  • Foot
  • Hall Effect
  • Joystick
  • Key
  • Keyboard/Keypad
  • Piezo
  • Microswitches
  • Rotary
  • Push Button
  • Toggle
Capacitive, Magnetic and Piezo Switches
Capacitive, Magnetic and Piezo Switches
DIP & Rotary Encoded Switches
DIP & Rotary Encoded Switches
Domestic Installation Switches
Domestic Installation Switches
Foot Switches & Components
Foot Switches & Components
Joysticks & Components
Joysticks & Components
Key Switches & Selector Switches
Key Switches & Selector Switches
Keyboard & Keypad Switches
Keyboard & Keypad Switches
Limit & Position Switches
Limit & Position Switches
Micro Switches & Detector Switches
Micro Switches & Detector Switches
Push Button Switches & Components
Push Button Switches & Components
Rocker Switches & Components
Rocker Switches & Components
Rope Pull Switches & Components
Rope Pull Switches & Components
Rotary Switches & Components
Rotary Switches & Components
Safety Enabling & Control Switches
Safety Enabling & Control Switches
Safety Interlock Switches & Components
Safety Interlock Switches & Components
Switch Disconnectors & Components
Switch Disconnectors & Components
Toggle Switches & Slide Switches
Toggle Switches & Slide Switches

55484 Products showing for Switches

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In Stock
RS PRO, For Use With 16 mm Push Button Switch
  • RS stock no. 905-9859
Subtotal (1 unit)
R 162,07(exc. VAT)
R 162,07/unit
In Stock
Marquardt SPNO, Momentary On-None-Off Rocker Switch Panel
  • RS stock no. 741-0921
  • Mfr. Part No. 1801.1202
Subtotal (1 unit)
R 73,99(exc. VAT)
R 73,99/unit
In Stock
Schmersal BPS Series Actuator, Plastic Housing, Screw
  • RS stock no. 198-7863
  • Mfr. Part No. BPS 33
Subtotal (1 unit)
R 294,78(exc. VAT)
R 294,78/unit
In Stock
Carling Technologies Rocker Switch Blanking Plug for use with Rocker Switch
  • RS stock no. 913-2080
  • Mfr. Part No. LH1-01
Subtotal (1 pack of 2 units)
R 88,74(exc. VAT)
R 44,37/unit
In Stock
Schneider Electric Harmony XB4 Series Red Spring Return Push Button Head, 22 mm Cutout, IP66, IP67, IP69, IP69K
  • RS stock no. 331-0063
  • Mfr. Part No. ZB4BW34
Subtotal (1 unit)
R 232,07(exc. VAT)
R 232,07/unit
Limited stock
Telemecanique Sensors ZCKJ Series Roller Lever Limit Switch, SPDT, IP65, Metal Housing, 240V ac, 3A
  • RS stock no. 700-4324
  • Mfr. Part No. ZCKJ2H29
Subtotal (1 unit)
R 1 917,55(exc. VAT)
R 1 917,55/unit
In Stock
RS PRO 5 Position 30 °, Knob Actuator 16 A
  • RS stock no. 208-3902
Subtotal (1 unit)
R 665,41(exc. VAT)
R 665,41/unit
In Stock
RS PRO SPST, On-Off Rocker Switch Panel
  • RS stock no. 793-2487
Subtotal (1 unit)
R 25,17(exc. VAT)
R 25,17/unit
In Stock
Telemecanique Sensors XCKN Series Roller Lever Limit Switch, 1 NO/1 NC, IP65, Plastic Housing, 240V ac, 10A
  • RS stock no. 125-8464
  • Mfr. Part No. XCKN2145G11
Subtotal (1 unit)
R 663,90(exc. VAT)
R 663,90/unit
In Stock
Schneider Electric 3-Pole Panel Mount Isolator Switch -, IP65, IP20, 32A, 15 kW
  • RS stock no. 279-6157
  • Mfr. Part No. VCF1
Subtotal (1 unit)
R 806,00(exc. VAT)
R 806,00/unit
In Stock
Schmersal Elan Series Green Push Button Head, 22 mm Cutout, IP69K
  • RS stock no. 487-9478
  • Mfr. Part No. NDL GN
Subtotal (1 unit)
R 686,74(exc. VAT)
R 686,74/unit
In Stock
RS PRO Foot Switch Bellow Momentary Foot Switch - SPST Polyvinyl Chloride 50mA Contact Current
  • RS stock no. 456-1717
Subtotal (1 unit)
R 499,16(exc. VAT)
R 499,16/unit
In Stock
Eaton RMQ-Titan Series Push Button Switch, 50 mm Cutout Black, IP67
  • RS stock no. 232-069
  • Mfr. Part No. 110933 M22-D-S-K10-BVP
Subtotal (1 unit)
R 504,05(exc. VAT)
R 504,05/unit
In Stock
Assemtech Magnet for use with Rectangular Reed Switches
  • RS stock no. 613-8202
  • Mfr. Part No. MMPSM
Subtotal (1 unit)
R 61,43(exc. VAT)
R 61,43/unit
In Stock
RS PRO Adjustable Roller Lever Limit Switch, 1 NO/1 NC, IP66, Zinc Alloy Housing, 400V ac, 10A
  • RS stock no. 902-6896
Subtotal (1 unit)
R 561,53(exc. VAT)
R 561,53/unit
In Stock
ABB OSSD Series Electronic Detection Non-Contact Safety Switch, Polybutylene Terephthalate Housing, 24V dc, M12
  • RS stock no. 917-6402
  • Mfr. Part No. 2TLA020051R5700 Adam OSSD-Info M12-8
Subtotal (1 unit)
R 1 883,31(exc. VAT)
R 1 883,31/unit
In Stock
RS Better World
Schneider Electric Black Rotary Handle, 600 mm, ComPacT NSX Series
  • RS stock no. 254-6377
  • Mfr. Part No. LV429338T
Subtotal (1 unit)
R 4 128,00(exc. VAT)
R 4 128,00/unit
In Stock
RS Better World
Schneider Electric Harmony XB4 Series Push Button Switch, Spring Return, Panel, 22 mm Cutout, SPST, Black LED, IP66,
  • RS stock no. 330-8616
  • Mfr. Part No. XB4BA21
Subtotal (1 unit)
R 264,00(exc. VAT)
R 264,00/unit
In Stock
Allen Bradley 440G-T Series Solenoid Interlock Switch, Power to Unlock
  • RS stock no. 351-3852
  • Mfr. Part No. 440G-T27121
Subtotal (1 unit)
R 6 138,37(exc. VAT)
R 6 138,37/unit
In Stock
Grayhill 56, 10 Position DP10T Rotary Switch, 200mA, PCB Terminal
  • RS stock no. 877-9880
  • Mfr. Part No. 56DP36-01-1-AJN
Subtotal (1 unit)
R 299,97(exc. VAT)
R 299,97/unit
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