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 734-7198
BrandRS PRO
HK$19.76
單位
Double Pole Double Throw (DPDT) Latching 3 A @ 120 V ac PCB Through Hole - - - - 4.95mm 7.37mm Chromium Plated Brass - 20mΩ
RS庫存編號 354-2664
製造零件編號B-13AP
HK$26.27
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Single Pole Double Throw (SPDT) On-Off-On 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 10mm Brass - 50mΩ
RS庫存編號 316-989
製造零件編號FTN0904
HK$54.04
單位
DPDT Latching 4 A @ 30 V dc Panel Mount Through Hole - - - - 6.2mm 10.5mm Chrome Plated Brass - 10mΩ
RS庫存編號 575-523
製造零件編號0320.0302
BrandMarquardt
HK$301.49
單位
2 NO On-Off 16 A @ 250 V ac Panel Mount Screw - - - - - 27mm Polyamide - -
RS庫存編號 354-2721
製造零件編號G-12AP
HK$28.58
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Single Pole Double Throw (SPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 3.8mm Glass Fibre Reinforced PA - 80mΩ
RS庫存編號 518-5336
製造零件編號Y32CP
BrandAPEM
HK$88.46
單位
Double Pole Double Throw (DPDT) On-Off-On 15 A @ 250 V ac Panel Mount Tab - - - - - 17.5mm - - 10mΩ
RS庫存編號 350-232
製造零件編號C1750HOAAI
HK$46.87
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Double Pole Single Throw (DPST) Latching 20 A @ 250 V ac Panel Mount Solder, Tab IP40 - - - 12.7mm 16.4mm PC - 100mΩ
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製造零件編號FTS0904
HK$97.29
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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 448-1009
BrandRS PRO
HK$32.47
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 7.37mm Brass - 20mΩ
RS庫存編號 164-8732
製造零件編號FTS0904
HK$68.503
個 (以毎盒:100)
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 881-1202
製造零件編號DA100-PB-B
HK$16.837
/個 (每包:10個)
單位
Single Pole Single Throw (SPST) Latching 10 A Panel Mount Tab - - - - 12.7mm 17.44mm Nylon 250V ac -
RS庫存編號 306-4849
製造零件編號631H/2-1V
BrandAPEM
HK$130.52
單位
Single Pole Single Throw (SPST) Latching 10 A @ 24 V dc Panel Mount Solder, Tab - - - - - 19.4mm Nickel Plated Brass - 10mΩ
RS庫存編號 199-0954
製造零件編號MTA206P
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Double Pole Double Throw (DPDT) On-Off-On 4 A @ 30 V dc Panel Mount Solder - - - - - 10.5mm - - 10mΩ
RS庫存編號 103-5502
製造零件編號5638A9
BrandAPEM
HK$42.44
單位
Single Pole Single Throw (SPST) (On)-Off-On 4 A @ 30 V dc Panel Mount Solder - - - - - 11.4mm Brass - 10mΩ
RS庫存編號 819-9329
製造零件編號MTG 206 SA
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Double Pole Double Throw (DPDT) (On)-On-(On) 4 A @ 30 V dc Panel Mount Solder Tag - - - - 12.5mm 11.5mm - - <20mΩ
RS庫存編號 417-5451
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BrandAPEM
HK$149.00
單位
Single Pole Single Throw (SPST) Latching 12 A Panel Mount Solder, Tab IP67 - - - - 17.5mm Brass 28V dc 10mΩ
RS庫存編號 419-845
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SPST Latching 16 A @ 125 V ac Panel Mount Tab - Yes - - 20.2mm 16mm PC - 50mΩ
RS庫存編號 734-7123
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Double Pole Single Throw (DPST) Latching 15 A@ 250 V ac, 15 A@ 30 V dc Panel Mount Screw - - - - - 17.5mm Brass - 10mΩ
RS庫存編號 475-1982
製造零件編號A-12HV
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Single Pole Double Throw (SPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 6.3mm Brass - 50mΩ