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 350-226
製造零件編號C1720HOAAG
HK$30.68
單位
Single Pole Double Throw (SPDT) On-Off-On 20 A @ 250 V ac Panel Mount Solder, Tab IP40 - - - 12.7mm 16.4mm PC - 100mΩ
RS庫存編號 448-0769
BrandRS PRO
HK$18.552
/個 (每包:5個)
單位
Double Pole Double Throw (DPDT) Latching 5 A @ 28 V dc Panel Mount Solder - - - - 6.35mm 10.41mm Brass - 10mΩ
RS庫存編號 819-9375
製造零件編號ATE 1 G
HK$47.69
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 50 mA @ 48 V dc PCB Pc Pin - - - - - 6mm Nickel Plated Brass - <50mΩ
RS庫存編號 762-5980
製造零件編號CF-TA-1EB4-A02
HK$19.84
單位
Single Pole Double Throw (SPDT) On-Off-On 50 mA@ 48 V ac/dc Surface Mount Right Angle Surface Mount - - - - - 6mm - - 100mΩ
RS庫存編號 692-5267
製造零件編號5649ADBGK
BrandAPEM
HK$124.82
單位
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庫存編號 879-8339
製造零件編號2M1-SP1-T1-B1-M1QE
HK$19.623
/個 (每包:10個)
單位
Single Pole Single Throw (SPST) Latching 5 A Panel Mount Solder Lug - - - - 6.35 (1/4 Bushing) mm, 11.91 (15/32 Bushing) mm 10.4mm Brass 250V ac 10mΩ
RS庫存編號 881-1546
製造零件編號LT-1514-610-012
HK$140.73
單位
Single Pole Single Throw (SPST) Latching 15 A Panel Mount Quick Connect Tabs - Yes - - 12.7mm 18.16mm - 15 → 28 V dc, 250 V ac -
RS庫存編號 354-3162
製造零件編號S-302T
HK$55.03
單位
Single Pole Double Throw (SPDT) Latching 6 A @ 250 V ac, 20 A @ 30 V dc Panel Mount Screw - - - - - 17.5mm Brass - 10mΩ
RS庫存編號 317-831
製造零件編號AWTR1504
HK$228.10
單位
Double Pole Double Throw (DPDT) (On)-On 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS庫存編號 354-3178
製造零件編號S-303T
HK$64.61
單位
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 762-5451
製造零件編號ET310D12-Z
HK$74.50
單位
Three Pole Double Throw (3PDT) Latching 7 A@ 250 V ac, 10 A@ 125 V ac Panel Mount Solder Tag - - - - - 17mm - - 20mΩ
RS庫存編號 842-4808
製造零件編號2TL1-7
BrandHoneywell
HK$191.52
單位
Double Pole Double Throw (DPDT) (On)-Off-(On) 6 A @ 230 V ac, 11 A @ 115 V ac, 18 A @ 28 V dc Panel Mount Screw - - - - - 17mm Metal, Plastic - -
RS庫存編號 879-8351
製造零件編號2M1-SP3-T1-B1-M1QE
HK$40.96
單位
Single Pole Single Throw (SPST) On-Off-On 5 A Panel Mount Solder Lug - - - - 6.35 (1/4 Bushing) mm, 11.91 (15/32 Bushing) mm 10.4mm Brass 250V ac 10mΩ
RS庫存編號 879-8354
製造零件編號2M1-SP3-T1-B1-M2QE
HK$40.52
單位
Single Pole Single Throw (SPST) On-Off-On 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 910-8068
製造零件編號631H
BrandAPEM
HK$49.09
單位
Single Pole Double Throw (SPDT) Latching 15 A Panel Mount Screw - - - - 12.2mm 17.5mm Nickel Plated Brass 400V ac 10mΩ
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 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 664-244
製造零件編號TL36W0050
BrandAPEM
HK$27.22
單位
SP On-On 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ
RS庫存編號 354-2995
製造零件編號S-1A
HK$44.65
單位
- - - - Solder - - - - - 17.5mm Brass - 10mΩ