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

55872 Products showing for Switches

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In Stock
APEM Toggle Switch, Panel Mount, On-Off-On, SPST, Tab Terminal, 24 V dc, 250 V ac
  • RS Stock No. 251-9269
  • Mfr. Part No. 639H/2
Subtotal (1 unit)
Kr. 108,91(exc. VAT)
Kr. 108,91/unit
In Stock
Schmersal NDLGB Series Yellow Momentary Push Button Switch, 22.3 mm Cutout, IP69K, IP67
  • RS Stock No. 206-5783
  • Mfr. Part No. 101163545
Subtotal (1 unit)
Kr. 355,90(exc. VAT)
Kr. 355,90/unit
In Stock
RS PRO Illuminated Piezo Switch, Momentary, IP68, 1A, 65 °C, -20 °C
  • RS Stock No. 175-9552
Subtotal (1 pack of 1 unit)
Kr. 592,56(exc. VAT)
Kr. 592,56/pack
Limited stock
RS Better World
Siemens SIRIUS ACT 3SU14 Series Contact Block, 500 V ac, 500V dc, 1 NC
  • RS Stock No. 874-2162
  • Mfr. Part No. 3SU1400-2AA10-1CA0
Subtotal (1 unit)
Kr. 105,13(exc. VAT)
Kr. 105,13/unit
In Stock
RS PRO 3 Position 60 °, Knob Actuator 32 A
  • RS Stock No. 265-7684
Subtotal (1 unit)
Kr. 495,56(exc. VAT)
Kr. 495,56/unit
In Stock
RS PRO Push Button Switch, Panel Mount, 22 mm Cutout Red, 2 NC, IP65
  • RS Stock No. 145-0621
Subtotal (1 unit)
Kr. 128,18(exc. VAT)
Kr. 128,18/unit
In Stock
RS PRO 3+N-Pole Panel Mount Isolator Switch -, IP65, 40A, 18.5 kW
  • RS Stock No. 860-9535
Subtotal (1 unit)
Kr. 453,19(exc. VAT)
Kr. 453,19/unit
Limited stock
Telemecanique Sensors ZCP Series Limit Switch Body, 1 NO/1 NC, IP66, IP67, Plastic Housing, 240V ac, 1.5A
  • RS Stock No. 447-3575
  • Mfr. Part No. ZCP21
Subtotal (1 unit)
Kr. 208,55(exc. VAT)
Kr. 208,55/unit
In Stock
RS Better World
Schneider Electric Handle Selector Switch - (1 NO/1 NC) 22 mm Cutout Diameter Illuminated 3 Positions
  • RS Stock No. 276-2582
  • Mfr. Part No. XB5AK133B5C0
Subtotal (1 unit)
Kr. 645,90(exc. VAT)
Kr. 645,90/unit
In Stock
RS PRO Push Button Switch, Momentary, PCB, SPST, Black LED, 20 V dc 125 V ac
  • RS Stock No. 734-6744
Subtotal (1 unit)
Kr. 12,93(exc. VAT)
Kr. 12,93/unit
In Stock
Schneider Electric Start-Stop Control Station Switch - SPST, Polycarbonate, 1 Cutouts, IP67, IP66, IP69K
  • RS Stock No. 330-8486
  • Mfr. Part No. XALD134
Subtotal (1 unit)
Kr. 460,46(exc. VAT)
Kr. 460,46/unit
In Stock
RS Better World
Siemens SIRIUS ACT 3SU14 Series Contact Block, 500 V ac, 500V dc, 1 NO
  • RS Stock No. 874-2210
  • Mfr. Part No. 3SU1400-1AA10-1BA0
Subtotal (1 unit)
Kr. 86,03(exc. VAT)
Kr. 86,03/unit
In Stock
RS PRO SPST, On-Off On-None-On Rocker Switch Panel
  • RS Stock No. 793-2471
Subtotal (1 unit)
Kr. 18,85(exc. VAT)
Kr. 18,85/unit
Temporarily out of stock
RS PRO KPB22 Series Illuminated Push Button Switch, Momentary, Panel, 22.2 mm Cutout, DPDT, Red LED, IP65, 36 V dc 250 V
  • RS Stock No. 175-8939
Subtotal (1 pack of 1 unit)
Kr. 90,60(exc. VAT)
Kr. 90,60/pack
In Stock
Schneider Electric Harmony Series Green Spring Return Push Button Head, 22 mm Cutout, IP66, IP67, IP69K
  • RS Stock No. 342-2891
  • Mfr. Part No. ZB5AW333
Subtotal (1 unit)
Kr. 92,14(exc. VAT)
Kr. 92,14/unit
In Stock
Schneider Electric Harmony XALK Series Twist Release Emergency Stop Push Button, Surface Mount, 40 mm Cutout, 2 NC,
  • RS Stock No. 330-8587
  • Mfr. Part No. XALK178F
Subtotal (1 unit)
Kr. 514,80(exc. VAT)
Kr. 514,80/unit
In Stock
RS PRO Push Button Switch, Momentary, Panel, 13.6 mm Cutout, SPST, Yellow LED, IP67, 50 V dc 250 V ac
  • RS Stock No. 144-4357
Subtotal (1 unit)
Kr. 20,25(exc. VAT)
Kr. 20,25/unit
In Stock
RS PRO DPST, On-Off On-None-On Rocker Switch Panel
  • RS Stock No. 793-2519
Subtotal (1 unit)
Kr. 18,74(exc. VAT)
Kr. 18,74/unit
In Stock
Schneider Electric Grey Polycarbonate Harmony XALD Control Station Enclosure - 3 Hole 22 mm Diameter
  • RS Stock No. 330-8436
  • Mfr. Part No. XALD03
Subtotal (1 unit)
Kr. 290,00(exc. VAT)
Kr. 290,00/unit
In Stock
RS PRO Bi-Metallic Thermostat, Closes at 95 °C, 110 °C Max NC, Automatic Reset, 16 A, Fixed Mount
  • RS Stock No. 222-8236
Subtotal (1 unit)
Kr. 108,45(exc. VAT)
Kr. 108,45/unit
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