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

51441 Products showing for Switches

1 of 999+
In Stock
Omron D4NS Safety Interlock Switch, 1NC/1NO, Keyed, Plastic
  • RS Stock No. 215-5054
  • Mfr. Part No. D4NS-1AF
Each
Kr. 477,93(exc. VAT)
In Stock
Better World
Schneider Electric Harmony XB5 Series Red Illuminated Momentary Push Button Head, 22mm Cutout, IP66, IP67, IP69K
  • RS Stock No. 422-8397
  • Mfr. Part No. ZB5AW343
Each
Kr. 94,09(exc. VAT)
In Stock
Better World
Schneider Electric ZBV Series Light Block, 230 → 240V, White Light
  • RS Stock No. 216-4846
  • Mfr. Part No. ZBV18M1
Each (In a Pack of 5)
Kr. 179,104(exc. VAT)
In Stock
Better World
Schneider Electric Knob Selector Switch - (SPDT) 22mm Cutout Diameter 2 Positions
  • RS Stock No. 330-8688
  • Mfr. Part No. XB4BD25
Each
Kr. 347,78(exc. VAT)
In Stock
RS PRO, Panel Mount Green LED Pilot Light, 22mm Cutout, IP65, Round, 24V ac/dc
  • RS Stock No. 763-7918
Each
Kr. 57,97(exc. VAT)
In Stock
ABB 3 Pole Surface Mount Switch Disconnector - 25A Maximum Current, 7.5kW Power Rating, IP65
  • RS Stock No. 237-3341
  • Mfr. Part No. 2CMA142440R1000
Each
Kr. 647,74(exc. VAT)
In Stock
Telemecanique Sensors XCMD Series Roller Plunger Limit Switch, NO/NC, IP66, IP67, IP68, Zinc Alloy Housing, 400V ac
  • RS Stock No. 814-8006
  • Mfr. Part No. XCMD2502L2
Each
Kr. 897,78(exc. VAT)
In Stock
ABUS Rectangular Reed Switch, NO, , 50mA
  • RS Stock No. 524-5860
  • Mfr. Part No. MK2000W
Each
Kr. 116,06(exc. VAT)
In Stock
Eaton 3P+N Pole Surface Mount Isolator Switch - 32A Maximum Current, 15kW Power Rating, IP65
  • RS Stock No. 180-9311
  • Mfr. Part No. 207333 P1-32/I2-SI/N
Each
Kr. 1 513,63(exc. VAT)
In Stock
RS PRO Illuminated DPST, On-Off Rocker Switch
  • RS Stock No. 185-8229
Each
Kr. 42,89(exc. VAT)
In Stock
Better World
Schneider Electric Harmony ZALV Series Light Block for Use with XB5 Ø22 mm Control and Signalling Units, 24V, White
  • RS Stock No. 610-2742
  • Mfr. Part No. ZALVB1
Each
Kr. 141,51(exc. VAT)
In Stock
RS PRO Adjustable Roller Lever Limit Switch, 1NC/1NO, IP67, SPDT, Glass Reinforced Plastic (GRP) Housing, 250V ac ac
  • RS Stock No. 269-5462
Each
Kr. 374,71(exc. VAT)
In Stock
Omron IP64 Black Button Tactile Switch, SPST 50 mA @ 24 V dc 0.8mm Through Hole
  • RS Stock No. 686-6761
  • Mfr. Part No. B3S-1002P
Each (In a Bag of 5)
Kr. 11,044(exc. VAT)
In Stock
Molveno Illuminated DPST, On-Off Rocker Switch Panel Mount
  • RS Stock No. 793-2522
  • Mfr. Part No. SX8211881G000000
Each
Kr. 36,29(exc. VAT)
In Stock
Eaton RMQ Titan M22 Series Pull Release Emergency Stop Push Button, Surface Mount, 2NC, IP66, IP69
  • RS Stock No. 810-3813
  • Mfr. Part No. 216524 M22-PV/KC02/IY
Each
Kr. 799,56(exc. VAT)
In Stock
RS PRO Toggle Switch, Panel Mount, On-None-Off, SPDT, Screw Terminal, 28V dc
  • RS Stock No. 734-6801
Each
Kr. 66,34(exc. VAT)
In Stock
RS PRO Miniature Push Button Switch, Momentary, Panel Mount, 13.6mm Cutout, SPST, 32/50/125V ac, IP67
  • RS Stock No. 734-6704
Each
Kr. 54,91(exc. VAT)
In Stock
RS PRO Toggle Switch, Panel Mount, On-Off-On, SPDT, Solder Terminal
  • RS Stock No. 734-7139
Each
Kr. 42,66(exc. VAT)
In Stock
Better World
Schneider Electric Harmony XB5 2-position Key Switch Head, Latching, 22mm Cutout
  • RS Stock No. 331-0287
  • Mfr. Part No. ZB5AG2
Each
Kr. 491,12(exc. VAT)
In Stock
Better World
Schneider Electric, iIL, DIN Rail Red/Green LED Indicator, IP2X, 230V ac
  • RS Stock No. 791-3114
  • Mfr. Part No. A9E18325
Each
Kr. 475,45(exc. VAT)
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