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庫存編號 464-4749
製造零件編號M-2032
HK$64.89
單位
Three Pole Double Throw (3PDT) Latching 3 A@ 30 V dc, 6 A@ 125 V ac PCB Through Hole IP67 - - - - - Chromium Plated Brass - 10mΩ
RS庫存編號 174-6397
製造零件編號641H/2 250 VAC
BrandAPEM
HK$53.23
單位
Double Pole Single Throw (DPST) Latching 10 A @ 24 V dc Panel Mount Tab - - - - 12.5mm 17.5mm Nickel Plated Brass - 10mΩ
RS庫存編號 734-7072
BrandRS PRO
HK$19.62
單位
Single Pole Double Throw (SPDT) Latching 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS庫存編號 317-588
製造零件編號FTN59G04
HK$153.25
單位
Double Pole Double Throw (DPDT) Latching 400 mA @ 20 V Panel Mount Solder - - - - 6.2mm 10.5mm Brass - 10mΩ
RS庫存編號 273-7057
製造零件編號636NH/2
BrandAPEM
HK$46.78
單位
Single Pole Single Throw (SPST) Latching 10 A @ 24 V dc Panel Mount Solder, Tab - - - - - 13.5mm Polyamide - 10mΩ
RS庫存編號 741-0996
製造零件編號1824.1101
BrandMarquardt
HK$39.96
單位
Double Pole Double Throw (DPDT) Latching 6 A @ 250 V ac - Tab IP40 - - - - 14mm Polyamide - 100mΩ
RS庫存編號 124-5902
製造零件編號G18AV
HK$34.10
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 100 mA PCB PC Pin - - - - - 3.8mm Glass Fibre Reinforced PA 28V 80mΩ
RS庫存編號 161-5036
製造零件編號1825136-2
HK$32.82
個 (以毎袋:100)
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 16.26mm Phenolic - 10mΩ
RS庫存編號 741-1003
製造零件編號1828.1101
BrandMarquardt
HK$51.77
單位
Single Pole Double Throw (SPDT) On-Off-On 6 A @ 250 V ac - Tab IP40 - - - - 14mm Polyamide - 100mΩ
RS庫存編號 124-5903
製造零件編號G3T12AB
HK$28.83
單位
Single Pole Double Throw (SPDT) Latching 100 mA Surface Mount Gull Wing - - - - - 3.8mm PPS 28V 80mΩ
RS庫存編號 274-0441
製造零件編號5666A
BrandAPEM
HK$84.53
單位
4-pole on-off switch Latching 4 A @ 30 V dc Panel Mount Solder - - - - - - Brass - 10mΩ
RS庫存編號 401-709
BrandRS PRO
HK$16.29
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole IP67 - - - - 6.1mm Brass - 20mΩ
RS庫存編號 164-8121
製造零件編號3-6437630-6
HK$245.62
Each (In a Tray of 50)
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Four Pole Double Throw (4PDT) On-On-On 6 A @ 250 V ac Panel Mount Through Hole - - - - 6.2mm 10.5mm Chromium Plated Brass - 10mΩ
RS庫存編號 317-184
製造零件編號FTT0904
HK$146.39
單位
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庫存編號 266-1556
製造零件編號635H/2
BrandAPEM
HK$43.99
單位
Single Pole Single Throw (SPST) (On)-On 10 A@ 24 V dc Panel Mount Solder, Tab - - - - - 17.5mm Nickel Plated Brass - 10mΩ
RS庫存編號 161-5037
製造零件編號3-1825136-8
HK$14.638
個 (以毎袋:100)
單位
Single Pole Double Throw (SPDT) Latching 5 A @ 28 V dc PCB Through Hole - - - - 6.35mm 12.19mm Phenolic - 10mΩ
RS庫存編號 124-5912
製造零件編號M2012SS2G13
HK$37.91
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Single Pole Double Throw (SPDT) Latching 100 mA PCB PC Pin - - - - - 10.5mm Chrome Plated Brass 28V ac/dc 20mΩ
RS庫存編號 124-5904
製造零件編號M2011ES4W01
HK$40.86
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Single Pole Single Throw (SPST) Latching 4 A @ 30 V dc, 6 A @ 125 V ac PCB Solder Lug - - - - 6.5mm 11.4mm Chrome Plated Brass 30 V dc, 250 V ac 10mΩ
RS庫存編號 180-6972
製造零件編號CF-TA-1HB4-A12
HK$78.878
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Single Pole Double Throw (SPDT) On-Off-(On) 50 mA Surface Mount - - - - - - 6mm - 48 100mΩ
RS庫存編號 181-3565
製造零件編號B13AV
HK$26.16
單位
Single Pole Double Throw (SPDT) On-Off-On 0.4 VA Through Hole PC Terminal IP65 No - - - 10mm Nickel Plated Brass 28 50mΩ