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. 419-855
BrandRS PRO
HK$15.38
Each
units
Single Pole Single Throw (SPST) Latching 16 A @ 125 V ac Panel Mount Tab - Yes - - 20.2mm 16mm PC 250V 50mΩ
RS Stock No. 734-7208
BrandRS PRO
HK$34.89
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
RS Stock No. 306-4849
Mfr. Part No.631H/2-1V
BrandAPEM
HK$204.68
Each
units
Single Pole Single Throw (SPST) Latching 10 A @ 24 V dc Panel Mount Tab - - - - - 19.4mm Nickel Plated Brass - 10mΩ
RS Stock No. 377-9658
Mfr. Part No.5638A
BrandAPEM
HK$27.07
Each
units
Single Pole Single Throw (SPST) On-Off-(On) 4 A @ 30 V dc Panel Mount Solder - - - - - - Brass - 10mΩ
RS Stock No. 103-5502
Mfr. Part No.5638A9
BrandAPEM
HK$43.73
Each
units
Single Pole Single Throw (SPST) On-Off-(On) 4 A @ 30 V dc Panel Mount Solder - - - - - 11.4mm Brass - 10mΩ
RS Stock No. 734-7097
BrandRS PRO
HK$21.32
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. 823-5119
Mfr. Part No.01818.1102-00
BrandMarquardt
HK$43.75
Each
units
SPDT On-Off-(On) 6 A @ 250 V ac Panel Mount Tab IP40 - 18.5mm 13.2mm - 14mm PA - <100mΩ
RS Stock No. 692-5267
Mfr. Part No.5649ADBGK
BrandAPEM
HK$151.01
Each
units
Double Pole Double Throw (DPDT) On-Off-On 4 A @ 30 V dc Panel Mount Solder - - - - 6.5mm 10.5mm Nickel Plated Brass - 10mΩ
RS Stock No. 164-8692
Mfr. Part No.A4TP15W04
HK$523.48
Each (In a Box of 50)
units
4PDT On-Off-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 266-1534
Mfr. Part No.641H/2
BrandAPEM
HK$57.33
Each
units
Double Pole Single Throw (DPST) Latching 10 A@ 24 V dc Panel Mount Tab - - - - - 17.5mm Nickel Plated Brass - 10mΩ
RS Stock No. 317-083
Mfr. Part No.FTN09G04
HK$114.51
Each
units
Double Pole Double Throw (DPDT) Latching 14 mA @ 28 V dc Panel Mount Solder - - - - 6.2mm 10.5mm Chrome Plated Brass - 20mΩ
RS Stock No. 350-226
Mfr. Part No.C1720HOAAG
HK$39.93
Each
units
Single Pole Double Throw (SPDT) On-Off-On 20 A @ 250 V ac Panel Mount Tab IP40 - - - 12.7mm 16.4mm PC - 100mΩ
RS Stock No. 711-8375
Mfr. Part No.TST 1D-RA
HK$42.42
Each
units
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 6.1mm Chromium Plated Brass - 20mΩ
RS Stock No. 354-3178
Mfr. Part No.S-303T
HK$65.63
Each
units
Single Pole Double Throw (SPDT) On-Off-On 6 A @ 250 V ac, 20 A @ 30 V dc Panel Mount Screw - - - - - 17.5mm Brass - 10mΩ
RS Stock No. 692-5205
Mfr. Part No.5656CDB
BrandAPEM
HK$104.06
Each
units
3-pole on-off switch Latching 400 mA @ 20 V Panel Mount Solder - - - - - - Brass - 10mΩ
RS Stock No. 692-5239
Mfr. Part No.5659ADBK3V
BrandAPEM
HK$192.33
Each
units
Three Pole Double Throw (3PDT) Locking lever, On-Off-On 4 A @ 30 V dc Panel Mount Solder - - - - 6.5mm 15.1mm Nickel Plated Brass - 10mΩ
RS Stock No. 123-2398
Mfr. Part No.5636A12
BrandAPEM
HK$61.50
Each
units
SPDT Latching 4 A Panel Mount Solder - - - - 6.5mm 6.3mm Brass 30V dc 10mΩ
RS Stock No. 745-5716
Mfr. Part No.2-6437630-8
HK$156.51
Each
units
Three Pole Double Throw (3PDT) Latching 6 A @ 250 V ac Panel Mount Solder - - - - 6.2mm 10.5mm Chromium Plated Brass - 10mΩ
RS Stock No. 164-8696
Mfr. Part No.AWTR1504
HK$177.02
Each (In a Box of 250)
units
DPDT On-(On) 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS Stock No. 222-601
Mfr. Part No.ATE2D-5M3-10-Z
HK$21.85
Each
units
DPDT On-On 50 mA@ 48 V ac/dc PCB Through Hole - - - - - 6mm - - 50mΩ
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