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. 734-7242
BrandRS PRO
MYR13.95
Each
units
Double Pole Double Throw (DPDT) On-Off-(On) 400 mA @ 20 V PCB Through Hole IP67 - 4.5mm 7mm - 7mm Glass Fibre Reinforced Nylon - 100mΩ
RS Stock No. 820-0554
BrandRS PRO
MYR48.05
Each
units
Single Pole Double Throw (SPDT) On-Off-On 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 734-7003
BrandRS PRO
MYR12.61
Each
units
Single Pole Double Throw (SPDT) Latching 3 A @ 250 V ac PCB Through Hole - - - - - 10.5mm Chromium Plated Brass - 10mΩ
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. 401-674
BrandRS PRO
MYR14.18
Each
units
Single Pole Double Throw (SPDT) On-Off-On 400 mA @ 20 V PCB Through Hole IP67 - - - - 6.1mm Brass - 20mΩ
RS Stock No. 394-431
BrandRS PRO
MYR63.04
Each
units
Double Pole Double Throw (DPDT) Latching 5 A @ 28 V dc Panel Mount Solder - - - - 11.91mm 17.56mm Chromium Plated Brass - 10mΩ
RS Stock No. 448-1009
BrandRS PRO
MYR19.23
Each
units
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 7.37mm Brass - 20mΩ
RS Stock No. 734-7167
BrandRS PRO
MYR12.61
Each
units
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole IP67 - - - - 8.13mm Chromium Plated Brass - 20mΩ
RS Stock No. 734-7038
BrandRS PRO
MYR12.61
Each
units
Double Pole Double Throw (DPDT) On-Off-On 5 A @ 250 V ac Panel Mount Solder - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 820-0567
BrandRS PRO
MYR52.91
Each
units
Single Pole Double Throw (SPDT) On-Off-(On) 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 734-6978
BrandRS PRO
MYR14.42
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac Panel Mount Solder IP67 - - - - 12.7mm Chromium Plated Brass - 10mΩ
RS Stock No. 401-696
BrandRS PRO
MYR13.61
Each
units
Single Pole Double Throw (SPDT) On-Off-On 400 mA @ 20 V PCB Through Hole IP67 - - - - 6.1mm Brass - 20mΩ
RS Stock No. 734-7084
BrandRS PRO
MYR12.38
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac PCB Surface Mount - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7090
BrandRS PRO
MYR7.19
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. 734-7157
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. 820-0523
BrandRS PRO
MYR57.05
Each
units
Double Pole Double Throw (DPDT) On-On-On 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 820-0508
BrandRS PRO
MYR53.41
Each
units
Double Pole Double Throw (DPDT) Momentary 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 820-0526
BrandRS PRO
MYR103.23
Each
units
Double Pole Double Throw (DPDT) (On)-On-(On) 5 A @ 250 V ac PCB Solder IP67 - - - - 18mm Brass - 10mΩ
RS Stock No. 734-7062
BrandRS PRO
MYR8.30
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac Panel Mount Solder - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS Stock No. 734-7075
BrandRS PRO
MYR12.38
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac PCB Surface Mount - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
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