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 266-2212
製造零件編號A4TN15W04
HK$772.17
單位
Four Pole Double Throw (4PDT) Latching 20 A @ 250 V ac Panel Mount Solder, Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS庫存編號 879-8326
製造零件編號2M1-DP1-T1-B1-M2QE
HK$46.01
單位
Double Pole Single Throw (DPST) Latching 5 A Panel Mount Pc Pin - - - - 6.35 (1/4 Bushing) mm, 11.91 (15/32 Bushing) mm 10.4mm Brass 250V ac 10mΩ
RS庫存編號 448-0955
BrandRS PRO
HK$34.42
單位
Double Pole Double Throw (DPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 5.33mm Chrome Plated Brass - 20mΩ
RS庫存編號 692-5273
製造零件編號5656ADBGK2V
BrandAPEM
HK$157.47
單位
Three Pole Double Throw (3PDT) Latching 4 A @ 30 V dc Panel Mount Solder - - - - 6.5mm 14.75mm Nickel 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 878-0388
製造零件編號76PSB06ST
BrandGrayhill
HK$26.75
/個 (每包:10個)
單位
Single Pole Single Throw (SPST) - 150 mA PCB - - - - - - - - 30V dc -
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 124-5928
製造零件編號M2013WBW01
HK$72.21
單位
Single Pole Double Throw (SPDT) On-Off-On 3 A @ 30 V dc, 6 A @ 125 V ac PCB Solder Lug IP67 - - - 12.5mm 20mm Chrome Plated 30 V dc, 250 V ac 10mΩ
RS庫存編號 198-8462
製造零件編號641SNH
BrandAPEM
HK$113.95
單位
Double Pole Single Throw (DPST) Latching 10 A @ 24 V dc Panel Mount Screw - - - - 12.5mm 13.5mm Polyamide - 10mΩ
RS庫存編號 664-200
製造零件編號TL36P0050
BrandAPEM
HK$34.22
單位
SP On-On 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ
RS庫存編號 762-4928
製造零件編號8J1022-Z
HK$23.04
單位
Single Pole Double Throw (SPDT) On-Off-On 3 A@ 250 V ac, 6 A@ 125 V ac PCB Through Hole - - - - - 6.8mm - - 10mΩ
RS庫存編號 124-5929
製造零件編號M2018WBG01
HK$89.72
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 100 mA PCB Solder Lug IP67 - - - 12.5mm 20mm Chrome Plated 28V ac/dc 20mΩ
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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 181-3651
製造零件編號S422T
HK$121.07
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Double Pole Double Throw (DPDT) Latching 20 A Panel Mount Screw - No - - 12.5mm 17.5mm - 250V ac 10mΩ
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單位
Double Pole Single Throw (DPST) Latching 400 mA @ 20 V Panel Mount Solder - - - - - - Brass - 10mΩ
RS庫存編號 664-216
製造零件編號TL39P0050
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單位
SP On-Off-On 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ
RS庫存編號 819-9464
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製造零件編號0133.0101
BrandMarquardt
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Double Pole Double Throw (DPDT) Latching 2 A @ 250 V ac Panel Mount Solder - - - - 12mm 12.5mm Polyamide - -
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製造零件編號MTG62AD2
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Single Pole Double Throw (SPDT) Latching 100 mA @ 30 V dc Panel Mount Solder IP51 - - - - - Nylon 66 - 10mΩ
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BrandAPEM
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單位
Single Pole Single Throw (SPST) (On)-Off-(On) 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ