Pushbutton Switches

Pushbutton Switches

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What is a Pushbutton Switch?

pushbutton switches

Pushbutton Switches operate via a pushing or pulling action that moves the operating part in the direction of the force required to open or close the contacts.
The operating part is generally equipped with an incandescent lamp or LED to provide illumination and status indication.

Features of Pushbutton Switches

Status Indication By adding illumination and status indication to the switch, the user can get visual feedback on the operation input they make.
Rich Product Variations Pushbutton Switches are used in a wide variety of applications from miniature devices to large-scale equipment, and therefore come in a rich selection of sizes, specifications and functions.

Pushbutton Switches are used in a wide variety of devices, and therefore our product lineup includes an extremely large number of different items to meet those needs.

Types of Pushbutton Switch Models

Pushbutton Switches come in round and rectangular bodies.
Round Pushbuttons are inserted into a circular hole on the mounting surface. The product series are categorized by the diameter of that mounting hole.
Each product series includes a variety of products based on the color, illumination and shape of the operating part.
We can also provide other items that might be mounted on the same panel, such as Indicators, Selectors and Buzzers.

Round Pushbutton Switch Variations
Buzzers       M2BJ
M2BJ
     
Key Selectors       A165K
A165K
  A22K
A22K
 
Knob Selectors (Illuminated and Non-illuminated)       A165S/W
A165S/W
  A22
A22
 
Indicators M2D
M2D
  M2C
M2C
M16
M16
  M22
M22
 
Pushbutton Switches (Illuminated and Non-illuminated) A3D
A3D
VAQ
VAQ
A2A
A2A
A3C
A3C
A16
A16
VAP
VAP
A22
A22
ZAP
ZAP
Mounting hole diameter (mm) 8 10.5 12 16 16.5 22 30
  • Small  For Commercial Devices

  • For Industrial Equipment and Facilities  Large

Rectangular Pushbutton series are categorized by their external size.
Each product series includes a variety of products based on the color, illumination and illumination method of the operating part.
We have also added indicator lamps commonly mounted on the same panel to our lineup.

Square Pushbutton Switch Variations
Indicators
M2S
M2S
M2K(Short-body Types)
M2K
(Short-body Types)
M2S
M2S
M2K(Short-body Types)
M2K
(Short-body Types)
M2P
M2P
 
M2P
M2P
 
Pushbutton Switches (Illuminated and Non-illuminated)
A3S
A3S
A3K(Short-body Types)
A3K
(Short-body Types)
A3S
A3S
A3K(Short-body Types)
A3K
(Short-body Types)
A3P
A3P
 
A3P
A3P
 
Mounting hole shape (mm) 16.2 × 16.2
Square
16.2 × 22.4
Rectangle
23.5 × 22.5
Square
23.5 × 30.5
Rectangle
  • Small  For Commercial Devices

  • For Industrial Equipment and Facilities  Large

Select the best configuration for your applications from a wide variety of external sizes and specifications.

Pushbutton Switch Structures

Pushbutton Switches generally consist of an operating part, mounting part, switch unit and case part.

2
Mounting Part
This is the part that secures the switch to the panel.
3
Switch Unit
This part opens and closes the electrical circuit.

pushbutton switch structures

1
Operating Part
The operating part relays the external operating force to the switch unit.
5
Light Source
This is the light source for illumination.
4
Case Part
The case protects the internal mechanisms of the switch.

1. Operating Part

The operating part relays the external operating force or movement to the switch unit.
The surface of the operating part on Illuminated Switches is illuminated from the light source.
There are two different types of Pushbutton Switches: Momentary Operation (self-resetting) Switches that are ON only while they are being pressed, and Alternate Operation (self-holding) Switches that stay ON when pressed and released and only turn OFF when they are pressed again.

operating parts of a pushbutton switch

2. Mounting Part

Round Pushbuttons use a mounting nut to secure them into place, while Rectangular Pushbuttons can be snapped into a panel by simply pushing it into the appropriate mounting hole.

mounting parts of a pushbutton switch

3. Switch Unit

The external force or movement received by the operating part is relayed to the pushbutton inside the switch, and it moves the moving armature to open or close the contacts.

switch unit

4. Case Part

The case protects the internal switch mechanisms.
Wiring is soldered to the terminals protruding from the bottom of the case.
On some switches, the switch unit can be separated from the case to improve wiring efficiency.

Applications of a Pushbutton Switch

There are several uses for pushbutton switches that are unique to them. Thanks to their wide product line, they’re a very versatile switch. Below, you can see several examples of applications for pushbutton switches.

Operation Input, Setting Condition Input, and Operation Status Confirmation for Production Lines

  • Mounted on control panels for large-scale assembly or processing lines and plants

Operation Input for Industrial Equipment

  • Mounted on control panels for machine tools or semi-conductor manufacturing equipment
plant control panels
Plant Control Panels
machine tools
Machine Tools
semiconductor manufacturing equipment
Semiconductor Manufacturing Equipment