Push Button Switches

A push button is a simple type of switch that controls an action in a machine or some type of process. Most of the time, the buttons are plastic or metal. The shape of the push button may conform to fingers or hands for easy use, or they may simply be flat.
Push Button Switch Operation
Push button switches typically have two key parts, an actuator and the contacts. The actuator will go all the way through the switch and into a thin cylinder at the bottom. Inside is a movable contact and spring. When the actuator is pressed, it touches with the stationary contacts, causing the action to take place.
Push buttons are available with normally open or normally closed contacts that change state when the actuator is operated. Momentary switches require the user to keep holding the button for an action to take place, this action is then reset once the button is released. Latching push buttons keep the switch in the set contact state until the button is pressed again.
Push Button Switch Uses
Push button switches are popular in a variety of different applications, including calculators, push button phones, and many home appliances. You can find them in the home, the office, and in industrial applications. They can turn machines on and off, or cause the devices to perform specific actions, as is the case with calculators. In some cases, specifically for commercial and industrial usage, the buttons can connect through mechanical linkage, which means that pushing one button can actually cause another button to release.

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Description Price Switch Operation Contact Configuration Mounting Type Illuminated Panel Cut Out Size Panel Cut Out Diameter Contact Current Rating LED Colour Series IP Rating Actuator Colour Voltage Rating Actuator Shape Terminal Type
RS Stock No. 872-2843
Mfr. Part No.704.632.1
BrandEAO
HK$43.386
Each (In a Pack of 5)
units
Latching - Panel Mount Yes 30.5 (Dia.)mm 30.5mm - - - IP65 - - Round Screw
RS Stock No. 174-6381
Mfr. Part No.AV021003C900
BrandAPEM
HK$102.67
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount, Screw Mount No 22.2 (Dia.)mm 22.2mm 2 A @ 48 V dc - - - Silver 24/48V dc Round Screw
RS Stock No. 847-5632
Mfr. Part No.AML21BBA2AA
BrandHoneywell
HK$181.75
Each
units
Momentary Single Pole Double Throw (SPDT) Panel Mount No 19.05 x 19.05mm - 2 A @ 24 V dc - - - - 24V - Solder/Quick Connect
RS Stock No. 226-148
Mfr. Part No.AV9SLD9483002K
BrandAPEM
HK$468.11
Each
units
Momentary Single Pole Single Throw (SPST) - Yes 19.2 (Dia.)mm 19.2mm 50 mA @ 24 V dc Green - IP67 - - Flat Screw
RS Stock No. 373-1634
Mfr. Part No.IBR3SAD3
BrandAPEM
HK$61.36
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount No 13.6 (Dia.)mm 13.6mm 400 mA @ 32 V ac - - IP67 Green 32V ac Dome Solder
RS Stock No. 846-6736
BrandRS PRO
HK$87.52
Each
units
Latching 3P CO PCB No 12.2 (Dia.)mm 12.2mm 2 A, 4 A - - - Silver - Cylinder Solder Lug
RS Stock No. 708-2936
Mfr. Part No.MP0027
BrandBulgin
HK$274.62
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount No 25.8 (Dia.)mm 25.8mm 5 A @ 250 V ac - - IP66 Silver 250V ac Round Solder
RS Stock No. 198-589
Mfr. Part No.A3CT7021
BrandOmron
HK$230.27
Each
units
Latching Single Pole Single Throw (SPST) Panel Mount Yes 12 (Dia.)mm 12mm 500 mA @ 250 V ac - - IP40 - 250V ac Round Solder
RS Stock No. 173-9655
Mfr. Part No.1241.6834.1122000
BrandSchurter
HK$312.449
Each (In a Box of 10)
units
Latching Double Pole Double Throw (DPDT) Panel Mount Yes 22 (Dia.)mm 22mm 12 A @ 250 V ac Green - IP64 (Front); IP00 (Rear) Natural 125/250V ac Round Tab
RS Stock No. 762-5814
Mfr. Part No.TM2-21-L5
HK$8.10
Each
units
Momentary Single Pole Single Throw (SPST) PCB Yes - - 50 mA@ 48 V dc Green - - - - - PC Terminal
RS Stock No. 219-0543
Mfr. Part No.18-137.035
BrandEAO
HK$109.36
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount Yes 8 (Dia.)mm 8mm 100 mA @ 42 V - - IP40 Black - Square Solder
RS Stock No. 914-4437
Mfr. Part No.P5-V31124
BrandOtto
HK$451.88
Each
units
Latching Single Pole Single Throw (SPST) Panel Mount No - - 10 A @ 115 V ac, 10 A @ 28 V dc - - IP64, IP68S, IP69K Silver 28 V dc, 115 V ac Round Solder
RS Stock No. 165-0854
Mfr. Part No.1825100-4
HK$141.85
Each (In a Bag of 25)
units
Momentary Single Pole Single Throw (SPST) PCB No - - 400 mA @ 20 V - - - Black 125V ac Cylinder Through Hole
RS Stock No. 708-2905
Mfr. Part No.3-120-091
BrandSchurter
HK$426.68
Each
units
Momentary Single Pole Double Throw (SPDT) Panel Mount Yes 19 (Dia.)mm 19mm 3 A @ 250 V ac Blue - IP69K Silver 250V ac Flat Tab
RS Stock No. 332-846
Mfr. Part No.9532CD+U572
BrandAPEM
HK$59.73
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount - 4.2 (Dia.)mm 4.2mm 100 mA @ 30 V dc - - - Black 30V dc Plunger Solder
RS Stock No. 861-0311
Mfr. Part No.C7053AFNAB
HK$75.18
Each
units
Latching Double Pole Double Throw (DPDT) Panel Mount Yes 25 (Dia.)mm 25mm 16 A Green - IP65 Silver 250V ac Plunger Tab
RS Stock No. 339-897
Mfr. Part No.ZNE18 FA200 BK GN 2U EE L
BrandC & K
HK$145.83
Each
units
Latching Double Pole Double Throw (DPDT) Panel Mount - 14 (Dia.)mm 14mm 4 A @ 250 V ac - - - Green 250V ac Round -
RS Stock No. 223-238
Mfr. Part No.LP1S-26S-559-Z
HK$77.60
Each
units
Momentary Double Pole Double Throw (DPDT) PCB Yes - - 3 A @ 125/250 V ac, 3 A @ 30 V dc Green - - - - - Through Hole
RS Stock No. 528-7814
Mfr. Part No.SP6022C100000
BrandMolveno
HK$34.41
Each
units
Latching Double Pole Double Throw (DPDT) Panel Mount - 25 (Dia.)mm 25mm 16 A @ 250 V ac - - - Green - Round Tab
RS Stock No. 173-7952
Mfr. Part No.1241.7026.1124074
BrandSchurter
HK$380.815
Each (In a Box of 10)
units
Momentary Single Pole Double Throw (SPDT) Panel Mount Yes 19 (Dia.)mm 19mm 3 A @ 250 V ac Blue - IP69K Silver 250V ac Flat Tab