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. You can learn more in our complete guide to push button switches.


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. 820-7521
BrandRS PRO
£2.12
Each
Units
Momentary Single Pole Single Throw (SPST) PCB Yes 8 (Dia.)mm 8mm 100 mA @ 30 V dc Red - - Clear 30V dc Plunger Pc Pin
RS Stock No. 820-7533
BrandRS PRO
£1.80
Each
Units
Momentary Single Pole Single Throw (SPST) PCB Yes 8 (Dia.)mm 8mm 100 mA @ 30 V dc Green - - Clear 30V dc Plunger Pc Pin
RS Stock No. 734-6763
BrandRS PRO
£2.81
Each
Units
Momentary Double Pole Double Throw (DPDT) PCB No - - 400 mA @ 20 V - - IP67 Black 32/50/125V ac Dome Through Hole
RS Stock No. 846-6736
BrandRS PRO
£7.36
Each
Units
Latching 3P CO PCB No 12.2 (Dia.)mm 12.2mm 2 A, 4 A - - - Silver - Cylinder Solder Lug
RS Stock No. 820-7549
BrandRS PRO
£2.86
Each
Units
Latching Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 100 mA @ 24 V dc - - IP67 Black 30V dc Dome Solder Lug
RS Stock No. 820-7537
BrandRS PRO
£3.51
Each
Units
Momentary Single Pole Single Throw (SPST) PCB Yes 8 (Dia.)mm 8mm 100 mA @ 30 V dc Blue - - Clear 30V dc Plunger Pc Pin
RS Stock No. 734-6794
BrandRS PRO
£3.29
Each
Units
Latching Single Pole Double Throw (SPDT) PCB No 6.35 (Dia.)mm 6.35mm 400 mA @ 20 V - - - - 32/50/125V ac Cylinder Right Angle Through Hole
RS Stock No. 734-6788
BrandRS PRO
£2.30
Each
Units
Momentary Single Pole Double Throw (SPDT) PCB No 6.35 (Dia.)mm 6.35mm 3 A @ 120 V ac - - - White 32/50/125V ac Cylinder Through Hole
RS Stock No. 820-7543
BrandRS PRO
£3.64
Each
Units
Latching Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 100 mA @ 24 V dc - - IP67 Red 30V dc Dome Solder Lug
RS Stock No. 820-7546
BrandRS PRO
£2.25
Each
Units
Momentary Single Pole Single Throw (SPST) PCB Yes 8 (Dia.)mm 8mm 100 mA @ 30 V dc Blue, Green - - Clear 30V dc Plunger Pc Pin
RS Stock No. 820-7527
BrandRS PRO
£3.51
Each
Units
Momentary Single Pole Single Throw (SPST) PCB Yes 8 (Dia.)mm 8mm 100 mA @ 30 V dc White - - Clear 30V dc Plunger Pc Pin
RS Stock No. 846-6732
BrandRS PRO
£5.46
Each
Units
Latching Double Pole Double Throw (DPDT) PCB No 12.2 (Dia.)mm 12.2mm 2 A, 4 A - - - Silver - Cylinder Pc Pin
RS Stock No. 820-7552
BrandRS PRO
£3.57
Each
Units
Latching Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 100 mA @ 24 V dc - - IP67 Green 30V dc Dome Solder Lug
RS Stock No. 820-7555
BrandRS PRO
£3.65
Each
Units
Latching Single Pole Single Throw (SPST) PCB Yes 13.6 (Dia.)mm 13.6mm 100 mA @ 24 V dc White - IP67 Blue 30V dc Dome Solder Lug
RS Stock No. 820-7596
BrandRS PRO
£3.64
Each
Units
Momentary Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 400 mA @ 32 V ac - - IP67 Black 30V dc Dome Pc Pin
RS Stock No. 820-7606
BrandRS PRO
£3.64
Each
Units
Momentary Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 400 mA @ 32 V ac - - IP67 Blue 32/125V ac Dome Pc Pin
RS Stock No. 820-7593
BrandRS PRO
£3.64
Each
Units
Momentary Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 400 mA @ 32 V ac - - IP67 Green 30V dc Dome Pc Pin
RS Stock No. 846-6745
BrandRS PRO
£7.92
Each
Units
Latching 3P CO PCB No 12.2 (Dia.)mm 12.2mm 2 A, 4 A - - - - - Cylinder Pc Pin
RS Stock No. 820-7603
BrandRS PRO
£2.83
Each
Units
Momentary Single Pole Single Throw (SPST) PCB No 13.6 (Dia.)mm 13.6mm 400 mA @ 32 V ac - - IP67 Orange 32/125V ac Dome Pc Pin
RS Stock No. 846-6720
BrandRS PRO
£4.78
Each
Units
Latching Single Pole Double Throw (SPDT) PCB No 12.2 (Dia.)mm 12.2mm 2 A, 4 A - - - Silver - Cylinder Pc Pin