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. 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. 690-6982
Mfr. Part No.19-471.035
BrandEAO
HK$99.56
Each
units
Latching Single Pole Single Throw (SPST) Panel Mount Yes 8 (Dia.)mm 8mm 100 mA @ 42 V - - IP40 Black - - 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. 433-3180
Mfr. Part No.P9-113125
BrandOtto
HK$96.18
Each
units
Momentary Double Pole Double Throw (DPDT) Panel Mount No - - 5 A @ 28 V dc - - - Green 28V dc Dome Solder
RS Stock No. 724-3324
Mfr. Part No.PBS-001B-2
BrandLumberg
HK$51.66
Each
units
Momentary 1-pole on-off switch Panel Mount No 12 (Dia.)mm 12mm 3 A @ 250 V ac - - - Black 125/250V ac Rectangular Solder
RS Stock No. 320-629
Mfr. Part No.T0916SOAAE
HK$51.00
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount - 7.1 (Dia.)mm 7.1mm 500 mA @ 250 V ac - - - Black 250V ac Round Solder Tab
RS Stock No. 664-783
Mfr. Part No.AL8M-A100
BrandIdec
HK$104.91
Each
units
Latching Single Pole Double Throw (SPDT) Panel Mount Yes 8 (Dia.)mm 8mm 100 mA @ 50 V ac - - IP40 Grey 250V Cylinder Solder
RS Stock No. 278-1149
Mfr. Part No.AV0630C910
BrandAPEM
HK$275.25
Each
units
Momentary 1-pole on-off switch Panel Mount No 19.2 (Dia.)mm 16.2mm 200 mA @ 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. 219-0537
Mfr. Part No.18-247.035
BrandEAO
HK$148.02
Each
units
Latching 1NO Flush Mount Yes 8 (Dia.)mm 8mm 100 mA @ 42 V - - - - - Square -
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. 433-3203
Mfr. Part No.P9-213122
BrandOtto
HK$90.83
Each
units
Momentary Double Pole Double Throw (DPDT) Panel Mount No - - 5 A @ 28 V dc - - - Black 28V dc Dome Solder
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. 718-2225
Mfr. Part No.1825100-4
HK$165.51
Each
units
Momentary Single Pole Single Throw (SPST) PCB No - - 400 mA @ 20 V - - - Black - Cylinder Through Hole
RS Stock No. 222-342
Mfr. Part No.TM1-01
HK$12.11
Each
units
Off-(On) Single Pole Single Throw (SPST) - - - - 50 mA @ 48 V dc - - - - - - Through Hole
RS Stock No. 758-2111
Mfr. Part No.SPUJ190900
HK$17.963
Each (In a Box of 4)
units
Latching Double Pole Double Throw (DPDT) PCB No 7.4 x 7.2mm - 100 mA @ 30 V dc - - - Blue 30V dc Cylinder Straight Through Hole
RS Stock No. 278-1133
Mfr. Part No.AV1630C910
BrandAPEM
HK$235.07
Each
units
Momentary Single Pole Single Throw (SPST) Panel Mount No 16.2 (Dia.)mm 16.2mm 200 mA @ 48 V dc - - IP65 Silver 24/48V dc Round Screw
RS Stock No. 811-4135
Mfr. Part No.82-6551.1134
BrandEAO
HK$195.90
Each
units
Momentary Single Pole Double Throw (SPDT) Panel Mount Yes 22 (Dia.)mm 22mm 1 A @ 24 V dc Green - IP65, IP67 Natural Aluminium 24V Round Soldering / QC
RS Stock No. 914-4433
Mfr. Part No.P1-90266
BrandOtto
HK$864.02
Each
units
Momentary Single Pole Double Throw (SPDT) Threaded No - - 10 A @ 115 V ac, 10 A @ 28 V dc - - IP68S Red 28 V dc, 115 V ac Mushroom Solder
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