Toggle Switches

Toggle switches are among the most basic and most common of all electronic components, the switch moves contacts that either provide a path for current to flow through or moves those contacts in such a way that the path is cut. The toggle switches most people will be familiar with are light switches.How Does a Toggle Switch Function?Toggle switches may vary a bit in function from one to the next depending upon their configurations. However, the basics are the same.When the actuator (the toggle itself) is moved, the armature in the switch moves the contact into position either energizing the circuit or de-energizing it. Once the switch is moved from one position to the other, it typically stays that way. There are also momentary switches, which energize or de-energize a circuit for as long as they are actuated and then go back to their normal state once the actuator is released. This is accomplished via a spring mechanism that exerts a force on the armature from the inside.Contact Configuration of a Toggle Switch
  • A single pole single throw (SPST) switch is the simplest and most common type of toggle switch. These switches allow simple on and off operation for a single circuit. Most light switches are SPST switches.
  • Single pole double throw (SPDT) switches can be used to change where a voltage is directed. The double throw means that the switch can be used to energize two different circuits - one at a time - from a single source of energy.
  • Double pole single throw (DPST) switches allow an operation that is very similar to having two SPST switches hooked together in one device. The switch can turn two circuits on and off. These are very convenient when more than one device needs to be controlled with the same switch.
  • Double pole double throw (DPDT) switches allow two different circuits to be served by the same pole. These are used in applications where a circuit may need to have changing voltages applied to connected devices.
There are also switches with the designation CO, such as SPCO (single pole changeover) switches. These have an off position in the middle of the switch and can be used to energize or de-energize two different circuits attached to the device.

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Description Price Contact Configuration Switch Operation Contact Current Rating Mounting Type Terminal Type IP Rating Illuminated Panel Cut Out Width Panel Cut Out Height Panel Cut Out Diameter Actuator Length Actuator Material Voltage Rating Contact Resistance
RS Stock No. 734-7195
BrandRS PRO
MYR15.99
Each
units
Double Pole Double Throw (DPDT) On-Off-On 400 mA @ 20 V PCB Through Hole - - - - 4.95mm 5.33mm Chromium Plated Brass - 20mΩ
RS Stock No. 734-7151
BrandRS PRO
MYR14.80
Each
units
Double Pole Double Throw (DPDT) Latching 400 mA @ 20 V PCB Through Hole IP67 - - - - 6.1mm Chromium Plated Brass - 20mΩ
RS Stock No. 448-0882
BrandRS PRO
MYR24.27
Each
units
Double Pole Double Throw (DPDT) (On)-Off-(On) 400 mA @ 20 V PCB Through Hole - - - - - 5.33mm Brass - 20mΩ
RS Stock No. 820-0517
BrandRS PRO
MYR53.41
Each
units
Double Pole Double Throw (DPDT) On-Off-On 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 820-0532
BrandRS PRO
MYR53.41
Each
units
Single Pole Double Throw (SPDT) Momentary 400 mA @ 20 V dc PCB Through Hole IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 394-421
BrandRS PRO
MYR24.47
Each
units
Double Pole Double Throw (DPDT) On-Off-On 5 A @ 250 V ac Panel Mount Solder - - - - - 10.41mm Brass - 10mΩ
RS Stock No. 448-0999
BrandRS PRO
MYR30.56
Each
units
Double Pole Double Throw (DPDT) (On)-Off-(On) 400 mA @ 20 V PCB Through Hole - - - - - 5.33mm Brass - 20mΩ
RS Stock No. 734-7160
BrandRS PRO
MYR11.85
Each
units
Single Pole Double Throw (SPDT) Latching 3 A @ 120 V ac PCB Through Hole IP67 - - - - 10.16mm Chromium Plated Brass - 20mΩ
RS Stock No. 734-7154
BrandRS PRO
MYR11.09
Each
units
Single Pole Single Throw (SPST) Latching 5 A @ 28 V dc Panel Mount Solder - - 6.86mm 12.7mm - 10.4mm Chrome Plated Brass 28V dc 10mΩ
RS Stock No. 734-7056
BrandRS PRO
MYR18.56
Each
units
Double Pole Double Throw (DPDT) On-On-On 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7028
BrandRS PRO
MYR12.61
Each
units
Double Pole Double Throw (DPDT) Latching 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 5.08mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-6801
BrandRS PRO
MYR15.23
Each
units
Single Pole Double Throw (SPDT) Latching 20 A @ 28 V dc Panel Mount Screw - - - - - 17mm - - 20mΩ
RS Stock No. 734-7163
BrandRS PRO
MYR16.71
Each
units
Single Pole Double Throw (SPDT) Latching 3 A @ 120 V ac PCB Through Hole IP67 - - - - 8.13mm Chromium Plated Brass - 20mΩ
RS Stock No. 734-7078
BrandRS PRO
MYR9.78
Each
units
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7104
BrandRS PRO
MYR8.85
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 5.08mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7097
BrandRS PRO
MYR11.09
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac Panel Mount Solder - - - - 6.35mm 5.08mm Chromium Plated Brass - 10mΩ
RS Stock No. 394-437
BrandRS PRO
MYR46.89
Each
units
Double Pole Double Throw (DPDT) On-Off-On 5 A @ 28 V dc Panel Mount Solder - - - - 11.91mm 17.56mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7157
BrandRS PRO
MYR10.96
Each
units
Double Pole Double Throw (DPDT) Latching 400 mA @ 20 V PCB Through Hole IP67 - - - - 10.16mm Chromium Plated Brass - 20mΩ
RS Stock No. 734-7012
BrandRS PRO
MYR28.49
Each
units
Four Pole Double Throw (4PDT) On-On-On 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7205
BrandRS PRO
MYR10.25
Each
units
Double Pole Double Throw (DPDT) On-Off-On 3 A @ 120 V ac PCB Through Hole - - - - 4.95mm 5.33mm Chromium Plated Brass - 20mΩ
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