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 354-2670
製造零件編號B-13AH
HK$34.06
單位
Single Pole Double Throw (SPDT) On-Off-On 100 mA @ 28 V ac/dc Panel Mount, PCB Through Hole - Yes - - - 10mm Brass - 50mΩ
RS庫存編號 317-673
製造零件編號FTP7904
BrandBinder
HK$102.58
單位
Double Pole Double Throw (DPDT) On-Off-On 6 A @ 250 V ac Panel Mount Through Hole - - - - 6.2mm 11.5mm Chrome Plated Brass - 10mΩ
RS庫存編號 266-2212
製造零件編號A4TN15W04
HK$700.06
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 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 453-7966
製造零件編號TL-22H2DKNWS1
HK$116.35
單位
Double Pole Double Throw (DPDT) Latching 3 A @ 250 V ac Panel Mount Solder IP65 Yes - - 12.5mm 17.5mm PC - 10mΩ
RS庫存編號 745-5915
製造零件編號3-1437559-4
HK$117.15
單位
Single Pole Double Throw (SPDT) Latching 4 A @ 28 V dc Panel Mount Through Hole - - - - - - - - -
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 448-1037
BrandRS PRO
HK$33.97
單位
Double Pole Double Throw (DPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - - 7.37mm Brass - 20mΩ
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 879-8339
製造零件編號2M1-SP1-T1-B1-M1QE
HK$17.71
/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 123-2412
製造零件編號5639A17
BrandAPEM
HK$36.57
單位
Single Pole Double Throw (SPDT) On-Off-On 4 A Panel Mount Solder Lug - - - - 6.5mm 7mm Brass 30V dc 10mΩ
RS庫存編號 910-8103
製造零件編號636H/2+U282
BrandAPEM
HK$88.83
單位
Single Pole Double Throw (SPDT) Latching 15 A Panel Mount Solder Lug - - - - 12.2mm 17.5mm Nickel Plated Brass 400V ac 10mΩ
RS庫存編號 222-601
製造零件編號ATE2D-5M3-10-Z
HK$24.89
單位
DPDT On-On 50 mA@ 48 V ac/dc PCB Through Hole - - - - - 6mm - - 50mΩ
RS庫存編號 354-3162
製造零件編號S-302T
HK$53.83
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 354-2995
製造零件編號S-1A
HK$40.99
單位
- - - - Solder - - - - - 17.5mm Brass - 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 861-0295
製造零件編號C3922BAAAA
HK$54.22
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 20 A Panel Mount Tab - - - - 12.7mm 17.5mm Metal - -
RS庫存編號 710-9561
製造零件編號5-1825137-3
HK$39.88
單位
Single Pole Single Throw (SPST) (On)-Off-On 400 mA @ 20 V Panel Mount Through Hole - - - - - 17.5mm Phenolic - 10mΩ
RS庫存編號 134-1093
製造零件編號MTE106D
HK$80.81
單位
Single Pole Double Throw (SPDT) Latching 4 A @ 30 V dc Panel Mount Solder - - - - - 10.5mm - - 10mΩ
RS庫存編號 664-244
製造零件編號TL36W0050
BrandAPEM
HK$27.21
單位
SP On-On 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ