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 762-4767
製造零件編號8C1041-Z
HK$27.18
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 3 A@ 250 V ac, 6 A@ 125 V ac Panel Mount Tab - - - - - 11.4mm - - 10mΩ
RS庫存編號 394-447
BrandRS PRO
HK$84.53
單位
Double Pole Double Throw (DPDT) (On)-Off-(On) 5 A @ 28 V dc Panel Mount Solder - - - - 11.91mm 17.56mm Chromium Plated Brass - 10mΩ
RS庫存編號 320-938
製造零件編號5646A9
BrandAPEM
HK$44.74
單位
Double Pole Double Throw (DPDT) Latching 4 A @ 30 V dc Panel Mount Solder - - - - - 11.4mm Brass - 10mΩ
RS庫存編號 164-8730
製造零件編號FTD59G04
HK$72.26
個 (以毎盒:100)
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V Panel Mount Solder - - - - 6.2mm 16.5mm Chrome Plated Brass - 10mΩ
RS庫存編號 317-572
製造零件編號FTD59G04
HK$84.92
單位
SPDT Latching 400 mA @ 20 V Panel Mount Solder - - - - 6.2mm 16.5mm Chrome Plated Brass - 10mΩ
RS庫存編號 734-7016
BrandRS PRO
HK$13.84
單位
Double Pole Double Throw (DPDT) Latching 5 A @ 250 V ac Panel Mount Solder - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS庫存編號 317-033
製造零件編號FTG0904
HK$67.72
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 4 A @ 30 V dc Panel Mount Through Hole - - - - 6.2mm 10.5mm Chrome Plated Brass - 10mΩ
RS庫存編號 354-3156
製造零件編號S-301T
HK$53.62
單位
Single Pole Single Throw (SPST) Latching 6 A @ 250 V ac, 20 A @ 30 V dc Panel Mount Screw - - - - - 17.5mm Brass - 10mΩ
RS庫存編號 135-4445
製造零件編號AWTD1504
HK$125.64
個 (以毎盒:100)
單位
Single Pole Double Throw (SPDT) Latching 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS庫存編號 762-5489
製造零件編號FT1D-4M-Z
HK$22.68
單位
Single Pole Double Throw (SPDT) Latching 0.4 VA@ 28 V dc PCB Vertical Through Hole - - - - - 3.8mm - - 100mΩ
RS庫存編號 741-1000
製造零件編號1821.6101
BrandMarquardt
HK$37.40
單位
Single Pole Single Throw (SPST) Latching 6 A @ 250 V ac - Solder IP40 - - - - 14mm Polyamide - 100mΩ
RS庫存編號 317-421
製造零件編號AWTD1504
HK$153.01
單位
Single Pole Double Throw (SPDT) Latching 20 A @ 250 V ac Panel Mount Tab IP67 - - - - 17.5mm Brass - 10mΩ
RS庫存編號 377-9642
製造零件編號5637A
BrandAPEM
HK$27.44
單位
Single Pole Single Throw (SPST) (On)-Off-(On) 4 A @ 30 V dc Panel Mount Solder - - - - - - Brass - 10mΩ
RS庫存編號 879-8332
製造零件編號2M1-SP1-T1-B1-M2QE
HK$19.85
單位
Single Pole Single Throw (SPST) 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 475-1982
製造零件編號A-12HV
HK$40.49
單位
Single Pole Double Throw (SPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 6.3mm Brass - 50mΩ
RS庫存編號 354-2664
製造零件編號B-13AP
HK$26.27
單位
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 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 317-178
製造零件編號FTS0904
HK$97.29
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 394-431
BrandRS PRO
HK$59.78
單位
Double Pole Double Throw (DPDT) Latching 5 A @ 28 V dc Panel Mount Solder - - - - 11.91mm 17.56mm Chromium Plated Brass - 10mΩ
RS庫存編號 350-232
製造零件編號C1750HOAAI
HK$46.87
單位
Double Pole Single Throw (DPST) Latching 20 A @ 250 V ac Panel Mount Solder, Tab IP40 - - - 12.7mm 16.4mm PC - 100mΩ