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. 344-710
Mfr. Part No.FTPA0904
PHP1,142.71
Each
units
Double Pole Double Throw (DPDT) On-On-On 4 A @ 30 V dc Panel Mount Through Hole - - - - 6.2mm 16.5mm Chrome Plated Brass - 10mΩ
RS Stock No. 316-995
Mfr. Part No.F4TN0904
PHP921.19
Each
units
Four Pole Double Throw (4PDT) Latching 4 A @ 30 V dc Panel Mount Through Hole - - - - 6.2mm 10.5mm Chrome Plated Brass - 10mΩ
RS Stock No. 875-0671
Mfr. Part No.MTA306E
PHP99,803.00
1 Pack of 100
Pack(s)
Three Pole Double Throw (3PDT) On-Off-On 6 A@ 125 V ac Panel Mount Wire Lug - - - - 6.43mm 10.4mm Brass 125V ac 10mΩ
RS Stock No. 875-0668
Mfr. Part No.TT23K9T1/4
PHP171,545.00
1 Pack of 250
Pack(s)
Double Pole Single Throw (DPST) Latching 3 A@ 125 V ac, 3 A@ 28 V dc Panel Mount Wire Lug - - - - 6.4mm 10.69mm Brass 28 V dc, 125 V ac 20mΩ
RS Stock No. 317-184
Mfr. Part No.FTT0904
PHP543.82
Each
units
Double Pole Double Throw (DPDT) (On)-Off-On 6 A @ 250 V ac Panel Mount Through Hole - - - - 6.2mm 10.5mm Chrome Plated Brass - 10mΩ
RS Stock No. 135-4446
Mfr. Part No.AWTP1504
PHP1,572.527
Each (In a Bag of 100)
units
Double Pole Double Throw (DPDT) On-Off-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 317-847
Mfr. Part No.AWTP1504
PHP2,000.03
Each
units
Double Pole Double Throw (DPDT) On-Off-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 163-8526
Mfr. Part No.FTT0904
PHP420.188
Each (In a Box of 100)
units
Double Pole Double Throw (DPDT) (On)-Off-On 6 A @ 250 V ac Panel Mount Through Hole - - - - 6.2mm 10.5mm Chrome Plated Brass - 10mΩ
RS Stock No. 317-831
Mfr. Part No.AWTR1504
PHP1,479.32
Each
units
Double Pole Double Throw (DPDT) (On)-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 875-0699
Mfr. Part No.MTA206R
PHP888.13
Each
units
Double Pole Double Throw (DPDT) (On)-On 6 A @ 125 V ac Panel Mount Wire Lug - - - - 6.43mm 10.4mm Brass 125V ac 10mΩ
RS Stock No. 710-9696
Mfr. Part No.2-1825136-8
PHP195.32
Each
units
Single Pole Single Throw (SPST) Latching 5 A @ 28 V dc PCB Through Hole - - - - - 16.26mm Phenolic - 10mΩ
RS Stock No. 164-8696
Mfr. Part No.AWTR1504
PHP1,137.704
Each (In a Box of 250)
units
Double Pole Double Throw (DPDT) (On)-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 710-9870
Mfr. Part No.4-1825139-0
PHP417.38
Each
units
Double Pole Double Throw (DPDT) On-On-On 5 A @ 28 V dc PCB Through Hole - - - - - 17.5mm Phenolic - 10mΩ
RS Stock No. 710-9624
Mfr. Part No.1-1825137-1
PHP273.53
Each
units
Single Pole Double Throw (SPDT) On-Off-On 5 A @ 28 V dc PCB Through Hole - - - - 6.35mm 12.19mm Phenolic - 10mΩ
RS Stock No. 875-0700
Mfr. Part No.A211P3V40G04
PHP169,357.46
1 Pack of 500
Pack(s)
Double Pole Double Throw (DPDT) On-On-On 5 A@ 125 V ac, 5 A@ 28 V dc Panel Mount Vertical Through Hole - - - - 6.35mm 11.43mm Brass Alloy 28 V dc, 125 V ac 10mΩ
RS Stock No. 164-1983
Mfr. Part No.4-1825139-0
PHP362.78
Each (In a Bag of 100)
units
Double Pole Double Throw (DPDT) On-On-On 5 A @ 28 V dc PCB Through Hole - - - - - 17.5mm Phenolic - 10mΩ
RS Stock No. 783-0965
Mfr. Part No.A101KZQ04
PHP347.55
Each
units
Single Pole Double Throw (SPDT) Latching 5 A @ 28 V dc - Wire Lug - - - - - - - - -
RS Stock No. 171-0710
Mfr. Part No.1-1825137-9
PHP179.475
Each (In a Box of 25)
units
Single Pole Double Throw (SPDT) On-Off-On 400 mA @ 20 V PCB Through Hole - - - - 6.35mm 10.41mm Phenolic - 10mΩ
RS Stock No. 164-8698
Mfr. Part No.AWTT1504
PHP2,089.50
Each (In a Box of 100)
units
Double Pole Double Throw (DPDT) (On)-Off-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 317-853
Mfr. Part No.AWTT1504
PHP1,978.08
Each
units
Double Pole Double Throw (DPDT) (On)-Off-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ