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 124-5891
製造零件編號B12JP
HK$26.46
單位
Single Pole Double Throw (SPDT) Latching 100 mA PCB PC Pin IP65 - 4.9mm 6.2mm - 6.3mm Nickel Plated Brass 28V ac/dc 50mΩ
RS庫存編號 762-5397
製造零件編號ET115A-Z
HK$34.29
單位
Single Pole Single Throw (SPST) Latching 10 A@ 250 V ac, 15 A@ 125 V ac Panel Mount Tab - - - - - 17mm - - 20mΩ
RS庫存編號 692-8399
製造零件編號648H/2
BrandApem
HK$127.00
單位
Double Pole Single Throw (DPST) (On)-Off-On 5 A @ 25 V dc Panel Mount Solder, Tab - - - - - 17.5mm Nickel Plated Brass - 10mΩ
RS庫存編號 692-5324
製造零件編號5249CDB
BrandAPEM
HK$58.25
單位
Double Pole Single Throw (DPST) On-Off-On 400 mA @ 20 V PCB Through Hole - - - - - - Brass - 10mΩ
RS庫存編號 354-3128
製造零件編號S-2AW
HK$82.60
單位
- - - - Solder - - - - - 17.5mm Brass - 10mΩ
RS庫存編號 354-2709
製造零件編號B-22AP
HK$37.31
單位
Double Pole Double Throw (DPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 10mm Brass - 50mΩ
RS庫存編號 165-1475
製造零件編號5647AB-21+U642
BrandAPEM
HK$77.00
單位
Double Pole Double Throw (DPDT) Momentary-Off-Momentary 3 A @ 250 V ac, 4 A @ 30 V dc, 6 A @ 125 V ac Panel Mount Solder Lug - No - - 6.5mm 23.1mm Chrome Plated Brass 30 V dc, 125 V ac, 250 V ac 10mΩ
RS庫存編號 354-2642
製造零件編號B-12AP
HK$28.67
單位
Single Pole Double Throw (SPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 10mm Brass - 50mΩ
RS庫存編號 693-1427
製造零件編號3538-001N000
BrandAPEM
HK$131.98
單位
Single Pole Single Throw (SPST) (On)-Off-On 15 A @ 125 V ac Panel Mount Screw - - - - - 17.5mm Anodised Aluminium; Brass - 10mΩ
RS庫存編號 154-6156
製造零件編號ET01M3D1SAPE
BrandC & K
HK$56.77
單位
Single Pole Double Throw (SPDT) (On)-On 0.4 VA Surface Mount Gull Wing IP57 No - - - 6.1mm Nylon 20 20mΩ
RS庫存編號 124-5895
製造零件編號B22LB
HK$53.19
單位
Double Pole Double Throw (DPDT) Latching 100 mA PCB PC Pin IP65 - 4.9mm 6.2mm - 18.4mm Nickel Plated Brass 28V ac/dc 50mΩ
RS庫存編號 181-3707
製造零件編號A19J2H
HK$28.10
單位
Single Pole Double Throw (SPDT) On-Off-(On) 0.4 VA Through Hole PC Terminal - No - - - 6.3mm - 28 50mΩ
RS庫存編號 783-1224
製造零件編號MTA206NPC
HK$126.62
單位
Double Pole Double Throw (DPDT) Latching 4 A @ 28 V dc Panel Mount Solder - - - - 0.072in - - -
RS庫存編號 181-3574
製造零件編號B23JH
HK$31.21
單位
Double Pole Double Throw (DPDT) Latching 0.4 VA Through Hole PC Terminal IP65 No - - - 6.3mm Nickel Plated Brass 28 50mΩ
RS庫存編號 734-7255
BrandRS PRO
HK$16.46
單位
Single Pole Double Throw (SPDT) On-Off-On 400 mA @ 20 V PCB Through Hole IP67 - - - - 3.8mm Glass Filled Nylon - 100mΩ
RS庫存編號 762-5401
製造零件編號ET205K12-Z
HK$32.31
單位
Double Pole Single Throw (DPST) Latching 3 A@ 250 V ac, 5 A@ 125 V ac Panel Mount Solder Tag - - - - - 17mm - - 20mΩ
RS庫存編號 734-7012
BrandRS PRO
HK$38.41
單位
Four Pole Double Throw (4PDT) On-On-On 5 A @ 250 V ac PCB Through Hole - - - - 6.35mm 10.41mm Chromium Plated Brass - 10mΩ
RS庫存編號 354-3229
製造零件編號S-338T
HK$101.05
單位
Double Pole Double Throw (DPDT) (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 875-0655
製造零件編號TT13A3T
HK$24,645.87
1 包 250 套
Pack(s)
Single Pole Single Throw (SPST) Latching 3 A@ 125 V ac, 3 A@ 28 V dc Panel Mount Wire Lug - - - - 4.5mm 9.68mm Brass Alloy, Stainless Steel, Thermoplastic 28 V dc, 125 V ac 20mΩ
RS庫存編號 354-3140
製造零件編號S-3AW
HK$87.11
單位
- - - - Solder - - - - - 17.5mm Brass - 10mΩ