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

55407 Products showing for Switches

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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 Better World
Schneider Electric Harmony Series Twist Release Emergency Stop Push Button, Panel Mount, 22 mm Cutout, 1 NC, IP67, IP66,
  • RS stock no. 795-1306
  • Mfr. Part No. XB4BS8442
Subtotal (1 unit)
R 840,92(exc. VAT)
R 840,92/unit
In Stock
RS PRO Bi-Metallic Thermostat, Closes at 65 °C, 80 °C Max NC, Automatic Reset, 16 A, Fixed Mount
  • RS stock no. 222-8230
Subtotal (1 unit)
R 187,39(exc. VAT)
R 187,39/unit
In Stock
RS PRO Bi-Metallic Thermostat, Closes at 25 °C, +150 °C Max NC, Automatic Reset, 16 A, Fixed Mount
  • RS stock no. 222-8224
Subtotal (1 unit)
R 171,68(exc. VAT)
R 171,68/unit
In Stock
Eaton 3-Pole Rear Isolator Switch -, IP65, 20A, 5.5 kW
  • RS stock no. 499-7188
  • Mfr. Part No. 207405 T0-2-8900/V/SVB
Subtotal (1 unit)
R 1 112,23(exc. VAT)
R 1 112,23/unit
In Stock
ZF Long Hinge Lever Micro Switch, Solder Terminal, 6A, 250 V ac, SPDT, IP6K7
  • RS stock no. 150-710
  • Mfr. Part No. DC1C-A1LD
Subtotal (1 unit)
R 105,13(exc. VAT)
R 105,13/unit
In Stock
Telemecanique Sensors XCMD Series Roller Plunger Limit Switch, 1 NO/1 NC, IP68, IP66, IP67, Zamak Housing, 240V ac, 1.5A
  • RS stock no. 447-3840
  • Mfr. Part No. XCMD2102L1
Subtotal (1 unit)
R 1 824,19(exc. VAT)
R 1 824,19/unit
In Stock
Telemecanique Sensors OsiSense XC Series Limit Switch Head for Use with XC Series
  • RS stock no. 609-3698
  • Mfr. Part No. ZCKE08
Subtotal (1 unit)
R 935,38(exc. VAT)
R 935,38/unit
In Stock
RS PRO Reed Switch 90V ac, 1A
  • RS stock no. 530-8911
Subtotal (1 unit)
R 318,50(exc. VAT)
R 318,50/unit
In Stock
RS Better World
Schneider Electric Harmony XB4 Series Push Button Switch, Spring Return, Panel, 22 mm Cutout, SPST, Green LED, IP66,
  • RS stock no. 330-8638
  • Mfr. Part No. XB4BA31
Subtotal (1 unit)
R 264,00(exc. VAT)
R 264,00/unit
In Stock
RS PRO DPST, On-Off Rocker Switch Panel
  • RS stock no. 793-2519
Subtotal (1 unit)
R 36,05(exc. VAT)
R 36,05/unit
In Stock
Kraus & Naimer 3 Position, Rotary Knob Actuator 25 A
  • RS stock no. 758-614
  • Mfr. Part No. CA20.A213/GBA001.E
Subtotal (1 unit)
R 1 124,45(exc. VAT)
R 1 124,45/unit
In Stock
Telemecanique Sensors XCKJ Series Roller Lever Limit Switch, 1 NO/1 NC, IP66, Zamak Housing, 240V ac
  • RS stock no. 700-4309
  • Mfr. Part No. XCKJ10541H29
Subtotal (1 unit)
R 2 356,45(exc. VAT)
R 2 356,45/unit
In Stock
RS PRO Coil Spring Limit Switch, 1 NO/1 NC, IP66, Zinc Alloy Housing, 400V ac, 10A
  • RS stock no. 902-6903
Subtotal (1 unit)
R 533,37(exc. VAT)
R 533,37/unit
In Stock
APEM Black Push Button Boot for Use with Push Button
  • RS stock no. 103-6303
  • Mfr. Part No. U31+U21
Subtotal (1 pack of 5 units)
R 345,32(exc. VAT)
R 69,064/unit
In Stock
Telemecanique Sensors OsiSense XC Series Limit Switch Operating Head for Use with XC Series
  • RS stock no. 609-3705
  • Mfr. Part No. ZCKE09
Subtotal (1 unit)
R 1 011,49(exc. VAT)
R 1 011,49/unit
In Stock
APEM Red Tactile Switch Button, 3.8 mm, SPST 50mA 12 V dc, PCB
  • RS stock no. 378-6511
  • Mfr. Part No. DTS644RV
Subtotal (1 pack of 20 units)
R 83,32(exc. VAT)
R 4,166/unit
In Stock
Allen Bradley Guardmaster 3 Position 45 ° 60 A
  • RS stock no. 183-4360
  • Mfr. Part No. 194L-E12-3251
Subtotal (1 unit)
R 332,59(exc. VAT)
R 332,59/unit
In Stock
Lorlin BCK, 16 Position SPST Rotary Switch, 150mA, Through Hole
  • RS stock no. 655-3162
  • Mfr. Part No. BCK1001
Subtotal (1 unit)
R 185,99(exc. VAT)
R 185,99/unit
In Stock
APEM IB Series Miniature Push Button Switch, Momentary, Panel, 12.2 mm Cutout, SPST, IP67, 50 V dc 125 V ac
  • RS stock no. 225-139
  • Mfr. Part No. IBR3SAD900
Subtotal (1 unit)
R 194,84(exc. VAT)
R 194,84/unit
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