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 664-216
製造零件編號TL39P0050
BrandAPEM
HK$37.03
單位
SP On-Off-On 400 mA @ 20 V PCB Through Hole - - - - - 5.3mm Brass - 20mΩ
RS庫存編號 692-5188
製造零件編號5639CDB
BrandAPEM
HK$57.83
單位
Single Pole Single Throw (SPST) On-Off-On 400 mA @ 20 V Panel Mount Solder - - - - - 10.5mm Brass - 10mΩ
RS庫存編號 354-3257
製造零件編號WT-12AS
HK$71.72
單位
Single Pole Double Throw (SPDT) Latching 10 A@ 125 V ac, 10 A@ 30 V dc Panel Mount Solder - - - - - 17.5mm Brass - 10mΩ
RS庫存編號 222-538
製造零件編號ATE1F-2M3-10-Z
HK$17.62
單位
SPDT On-(On) 50 mA@ 48 V ac/dc PCB Through Hole - - - - - 6mm - - 50mΩ
RS庫存編號 819-9224
製造零件編號STM 106 D-VM
HK$79.13
單位
Single Pole Double Throw (SPDT) Latching 4 A@ 30 V dc PCB Pc Pin - - - - - 6.8mm - - <10mΩ
RS庫存編號 762-5410
製造零件編號ET205N12-Z
HK$37.20
單位
Double Pole Double Throw (DPDT) Latching 3 A@ 250 V ac, 5 A@ 125 V ac Panel Mount Solder Tag - - - - - 17mm - - 20mΩ
RS庫存編號 710-9781
製造零件編號5-1825136-4
HK$61.22
單位
Single Pole Double Throw (SPDT) Latching 5 A @ 28 V dc PCB Through Hole - - - - - 17.5mm Phenolic - 10mΩ
RS庫存編號 819-9246
製造零件編號MTA 206 PA
HK$83.47
單位
Double Pole Double Throw (DPDT) On-On-On 4 A @ 30 V dc Panel Mount Solder Tag - - - - 6.2mm 10.5mm - - <10mΩ
RS庫存編號 745-5993
製造零件編號1-1437558-2
HK$103.37
單位
- - - - - - - - - - - - - -
RS庫存編號 164-8153
製造零件編號5-6437630-5
HK$53.12
個 (以毎盒:100)
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 6 A @ 250 V ac Panel Mount Through Hole - - - - 6.2mm 10.5mm Chromium Plated Brass - 10mΩ
RS庫存編號 124-5939
製造零件編號S21AL
HK$102.02
單位
Double Pole Single Throw (DPST) Latching 15 A Panel Mount Solder Lug IP67 - - - 12.2mm 23.5mm Chrome Plated Brass 30 V dc, 250 V ac 10mΩ
RS庫存編號 475-1948
製造零件編號A-22HH
HK$55.13
單位
Double Pole Double Throw (DPDT) Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 6.3mm Nickel Plated Brass - 50mΩ
RS庫存編號 782-7247
製造零件編號A105P3ZQ04
HK$43.61
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 5 A @ 28 V dc - Wire Lug - - - - - - - - -
RS庫存編號 693-1357
製造零件編號106322103
BrandAPEM
HK$82.70
單位
Single Pole Double Throw (SPDT) (On)-On 3 A @ 24 V dc Panel Mount Solder - - - - - 11mm Brass - 10mΩ
RS庫存編號 702-3426
製造零件編號ATE2D
HK$60.32
單位
Double Pole Double Throw (DPDT) Latching 50 mA @ 48 V dc PCB Through Hole - - - - - 6mm - - 50mΩ
RS庫存編號 819-9313
製造零件編號MTG 206 P
HK$87.97
單位
Double Pole Double Throw (DPDT) On-Off-On 4 A @ 30 V dc Panel Mount Solder Tag - - - - 12.5mm 11.5mm - - <20mΩ
RS庫存編號 710-9463
製造零件編號3-1825137-7
HK$29.26
單位
Single Pole Double Throw (SPDT) (On)-Off-(On) 5 A @ 28 V dc PCB Through Hole - - - - 6.35mm 10.41mm Phenolic - 10mΩ
RS庫存編號 512-966
製造零件編號T9-CS2-21
BrandOtto
HK$235.00
單位
Double Pole Double Throw (DPDT) On-Off-On 20 A @ 28 V dc Panel Mount Screw - - - - - 17.53mm Stainless Steel - -
RS庫存編號 475-1847
製造零件編號A-12HP
HK$37.41
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 710-9791
製造零件編號3-1825138-4
HK$18.33
單位
Double Pole Double Throw (DPDT) (On)-On 5 A @ 28 V dc PCB Through Hole - - - - - 12.19mm Phenolic - 10mΩ