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 879-8531
製造零件編號6FC54-73
HK$58.02
單位
SPDT (On)-Off-(On) 15 A Panel Mount Screw - - - - 12.7mm 17.44mm Brass 250V ac -
RS庫存編號 187-3501
製造零件編號1TL1-7
BrandHoneywell
HK$193.70
單位
SPDT (On)-Off-(On) 10 A Panel Mount Screw - - 11.4mm - 12.4mm 17mm - 250 V dc, 277 V ac -
RS庫存編號 181-3593
製造零件編號M2012LL2G30
HK$443.45
毎包:5 個
Bag(s)
SPDT On-None-Off 0.4 VA PCB Through Hole IP67 No - - - 15mm - 28V ac/dc 20mΩ
RS庫存編號 783-1218
製造零件編號A101SYCB04
HK$32.54
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole - - - - 0.073in - - -
RS庫存編號 692-5236
製造零件編號5656ADBK2V
BrandAPEM
HK$182.72
單位
Three Pole Double Throw (3PDT) Latching 4 A @ 30 V dc Panel Mount Solder - - - - 6.5mm 14.75mm Nickel Plated Brass - 10mΩ
RS庫存編號 745-5630
製造零件編號3-6437630-4
HK$65.35
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V Panel Mount Solder - - - - 6.2mm 10.5mm Chromium Plated Brass - 10mΩ
RS庫存編號 475-2014
製造零件編號A-22HV
HK$49.29
單位
DPDT Latching 100 mA @ 28 V ac/dc PCB Through Hole - - - - - 6.3mm Nickel Plated Brass - 50mΩ
RS庫存編號 181-3678
製造零件編號M2018TJW01
HK$65.29
單位
SPDT (On)-Off-(On) 6 A Panel Mount Solder IP67 No 15.9mm 12.5mm - - - 125V ac 10mΩ
RS庫存編號 181-3694
製造零件編號M2112LCW01/M
HK$123.79
單位
SPDT Latching 6 A Panel Mount Solder - - - - 6.5mm 14.7mm - 125V ac 10mΩ
RS庫存編號 710-9488
製造零件編號1825142-1
HK$45.18
單位
Single Pole Double Throw (SPDT) Latching 400 mA @ 20 V PCB Through Hole IP67 - - - - 7.62mm Phenolic - 10mΩ
RS庫存編號 745-5933
製造零件編號5-1437561-1
HK$102.68
單位
Single Pole Double Throw (SPDT) On-Off-On 400 mA @ 20 V PCB Through Hole - - - - - 5.48mm Nickel Plated Copper Alloy - 20mΩ
RS庫存編號 883-7582
製造零件編號T7-211C5
BrandOtto
HK$203.23
單位
DPST Momentary 16 A Panel Mount Tab IP68S - - - - 0.66in Stainless Steel 28 V dc, 115 V ac -
RS庫存編號 692-5270
製造零件編號5656ADBGK
BrandAPEM
HK$182.72
單位
Three Pole Double Throw (3PDT) Latching 4 A @ 30 V dc Panel Mount Solder - - - - 6.5mm 10.5mm Nickel Plated Brass - 10mΩ
RS庫存編號 181-3561
製造零件編號B12A1P
HK$59.47
單位
SPDT Latching 0.4 VA PCB Through Hole IP65 No - - - 8mm Nickel Plated Brass 28V ac/dc 50mΩ
RS庫存編號 819-9256
製造零件編號MTA 406 S
HK$159.11
單位
4PDT (On)-Off-(On) 4 A @ 30 V dc Panel Mount Solder - - - - 6.2mm 10.5mm - - <10mΩ
RS庫存編號 181-3565
製造零件編號B13AV
HK$36.67
單位
SPDT On-Off-On 0.4 VA PCB Through Hole IP65 No - - - 10mm Nickel Plated Brass 28V ac/dc 50mΩ
RS庫存編號 878-0388
製造零件編號76PSB06ST
BrandGrayhill
HK$31.163
/個 (每包:10個)
單位
SPST - 150 mA PCB Through Hole - - - - - - - 30V dc -
RS庫存編號 236-9222
製造零件編號SF36S011100
BrandAPEM
HK$90.45
單位
Single Pole Single Throw (SPST) Latching 5 A @ 125 V ac Panel Mount Solder - - - - - 11.5mm Brass - 10mΩ
RS庫存編號 124-5928
製造零件編號M2013WBW01
HK$79.90
單位
SPDT On-Off-On 3 A @ 30 V dc, 6 A @ 125 V ac PCB Solder IP67 - - - 12.5mm 20mm Chrome Plated 30 V dc, 250 V ac 10mΩ
RS庫存編號 710-9797
製造零件編號4-1825138-0
HK$40.09
單位
Double Pole Double Throw (DPDT) On-(On) 5 A @ 28 V dc Panel Mount Solder - - - - - 17.5mm Phenolic - 10mΩ