Product Category


FILN 12MM Momentary Metal round Push Button Switch

Product Drawings:


Round push button switch is a very common electronic switch used in people’s daily life to control the connection and disconnection of electrical circuits.

It usually has a round appearance and consists of a round button and a plastic base.

The button industry is constantly evolving, but the round push button switch is always being used and developed.

Most people default to the ideal shape of the button switch, because the round shape meets the aesthetic and usage habits of most people. Just press the round push button switch with your finger to achieve the function of power on and off.

Product Parameters:

Production Series FLYM12-BJ-1 Light Guide Button PC plastic
Button Shape round Actuator 304 Stainless steel
Button LED Color Housing Sleeve H59 nickel plated brass
Mechanical Life The 300 thousand time Button pin H62 Copper alloy
Electrical Life The 100 thousand time Rubber Ring SIL silica gel
Protection Level IP65 IK09 Nut H59 nickel plated brass
Rated Voltage 36V DC Housing PA66+GF20% nylon
Rated Current 2A Light Source
Rated Power 36W Resistor Metal film
Operating Temperature -20℃~+55℃ Contact AgCdO12

FILN Pushbutton Switch Customization

Advantages Disadvantages
Easy to operate Limited number of functions
Compact design Limited visual feedback
Versatile and widely used Limited customization options
Durable and long-lasting Can be accidentally pressed
Provides tactile feedback Requires manual operation
Suitable for frequent use Limited control options

Obviously, the advantages of the round push button switch outweigh its disadvantages and is loved by most people, and you will find that the switches you use are almost all round.

Round push button switch

Related products:

Round Push Button Switch comes in a wide range of sizes, from 8MM for mini push button switch to 40MM for extra large push button, and even ultra-thin push button switch, all in round shape.
This page is about the regular type of 12MM round Push Button Switch.
First of all, it has a mounting hole diameter of 12MM and the mounting method is threaded and fixed.
This round Push Button Switch is not lighted, so there is no luminous effect. The shell is made of metal and the top of the round Push Button Switch is made of plastic.
Other colors can be customized according to customer needs.
The 12MM round Push Button Switch is a reset button without light, so it only has 2 terminals.
The reset button means that when you press the round Push Button Switch, the button switch is energized, and when your hand leaves this button, the button switch is disconnected.

Advantages of button switch

Speaking of its housing is made of metal, of which there are three materials, each of which can be customized to produce pushbutton switches for you in accordance with your actual usage needs.

This round Push Button Switch does not have a light, so the voltage is both AC and DC.
It can be used on 2V, 3V, 12V, 24V, 110V, 120V, 220V, 380V. Its current is 3A, so it can be used safely on machines and equipment with a power of less than 500W.

The mechanical life of FILN round push button switch is 100,000 times, and its waterproof rating is IP65.

Use scenarios of button switches

How Does The Momentary Round Push Button Switch Work?

The momentary round pushbutton switch is designed to be in a temporary or “momentary” state when the button is pressed. Once the button is released, it reverts to its original state.

The internal mechanism of a momentary round pushbutton switch typically consists of several key components:

Pushbutton component (color is optional): The round pushbutton is the external part of the switch, the part that can be seen directly on the device after installation and functions to allow us users to press it. It is usually made of a durable material, such as plastic or metal.

Button Spring: This spring is inside the switch and it provides the necessary force to push the button back to its original position when this round button switch is released. When this button is pressed by you, the spring will remain compressed and store potential energy.

Button Contacts: Inside the switch are contact terminals that are separated and do not make contact when the button is not pressed. These contacts are connected to the circuit and control the flow of current. When the button is pressed, the contacts make contact with each other, completing the circuit and allowing current to flow, forming a circuit to the site and the device begins to operate.

In summary: When the user presses the momentary round pushbutton switch, it compresses the spring and brings the electrical contacts together, temporarily allowing the circuit to be turned on, allowing current to flow through the switch and the device to operate a function properly. Once the user releases the round button, the spring pushes it back to its original position, the contacts break, the circuit is interrupted, and a function is stopped.

The transient nature of this switch type is useful in applications where you need temporary or momentary control, such as doorbells, input buttons for electronic devices, or as a trigger for a specific function in a circuit, etc.

How to Wire the Momentary 2PIN  Round Push Button Switch?

The wiring method is very simple. You need to detect the positive level of the machine equipment. Connect the positive electrode to one foot on the button, and then connect it from the other foot. As the below picture:

Wiring example:
Normally open wiring method
Press the button to power on the load and release to power off.

Button wiring method

Buy FILN Round Push Button Switch

As you need samples for testing, FILN company will provide samples for free.


If you need to customize your round push button switch or directly request button connection, you can write an email to our button technical engineer at We will give you a satisfactory solution.

filn sales-team

If you need a large amount of products, you can directly write an email at to our international trade sales staff. They will give you very good prices and excellent service.


If you just need a small amount of round push button switch, you can place an order directly on FILN will ship the product in a single day.

Round Push Button Switch: A Comprehensive Guide

Round push button switches are a fundamental component in modern electronic devices and machinery, offering versatile and efficient functionality. From understanding the different types, including the 12-volt momentary push button switch and round push button light switch, to exploring their applications, materials, installation methods, and troubleshooting, this comprehensive guide covers all aspects related to these essential switches. Whether you’re an industry professional, DIY enthusiast, or someone curious about the world of electronics, you’ll find valuable insights into the selection, utilization, and maintenance of round push button switches. Dive into this article to unravel everything you need to know about these crucial components, and keep reading to discover useful tips, guides, and expert recommendations!

What Is a Round Push Button Switch, and Where Is It Used?

Definition of a Round Push Button Switch

A round push button switch is a type of switch that is characterized by its round shape and ability to make or break an electrical connection with a simple push. Learn more.

Applications of a Round Push Button Switch

  1. Industrial Control Systems: Utilized in machinery to control various operations.
  2. Household Appliances: Found in devices such as washing machines and coffee makers.
  3. Automotive Applications: Used in cars for functions like starting the engine or controlling lights.

How Does a 12 Volt Momentary Push Button Switch Work?

Understanding 12 Volt Momentary Push Button Switch

A 12-volt momentary push button switch operates at a specific voltage, enabling temporary connection as long as the button is pressed. Read about waterproof versions here.

Momentary Push Button Switch Wiring Diagram

Wiring such a switch can be complex, but understanding the diagram will ease the process. Here is a connector suitable for wiring.

Where It Is Used

  • Emergency Systems: It can act as an emergency stop in machinery.
  • Vehicle Starting Systems: Momentary push button starter switches are used in some vehicles.
  • Heavy Machinery Control: Heavy-duty momentary push button switches are utilized in large industrial machines.

How to Choose a Round Push Button Light Switch?

Types of Round Push Button Light Switches

Different types are suitable for various applications, including dimmer switches and three-way switches. Check out LED push button switches.

Features to Consider

  • Voltage and Current Rating: Ensuring compatibility with the electrical system.
  • Design and Aesthetics: Matching the décor if used in a home environment.
  • Functionality: Such as momentary or latching operation.

Installation Process

Installing a round push button light switch may require professional help. Understanding the wiring diagram and following safety procedures is vital. See the illuminated push button switch wire guide.

What Are the Types of Momentary Push Button Switches?

Momentary Push Button Starter Switch

These switches are widely used in automotive applications to initiate the starting process. They are robust and often come with safety features. Here’s a specific example.

Momentary Push Button Switch with LED

These switches include an LED that may signal the switch’s status or provide a visual cue. Here are LED ring buttons.

Momentary Push Button Switch Normally Closed

This type of switch maintains a closed connection until pressed, at which point it opens the circuit. These are used in various safety and control applications. Find waterproof metal options here.

Can You Find a Momentary Push Button Switch 120V?

Availability of 120V Momentary Push Button Switch

Yes, 120V momentary push button switches are available and widely used in North America for household and industrial applications. Here’s a link to 28mm LED ring buttons suitable for this voltage.

Applications of 120V Momentary Push Button Switch

  1. Home Automation Systems: Controlling lights and other electronic devices.
  2. Industrial Controls: Used in various machinery that runs on this voltage.
  3. Emergency Systems: Acts as an emergency stop in safety-related applications.

Considerations for Choosing 120V Momentary Push Button Switch

  • Compliance with Standards: Must meet local electrical codes and regulations.
  • Compatibility: Must match the voltage and current requirements of the application.
  • Design Preferences: Including the color, size, and whether it includes additional features like LED illumination. View a variety of designs here.

What Materials Are Used in Round Push Button Switches?

Common Materials for Construction

Round push button switches are constructed using various materials depending on the application and required properties. Common materials include:

  1. Plastic: Often used for housing and buttons in less demanding applications.
  2. Metal: Used in heavy-duty and industrial switches. Explore metal push button switches.
  3. Rubber: For waterproofing and providing a comfortable grip.
  4. Copper and Silver Contacts: To ensure good electrical conductivity.

Material Selection Based on Applications

  • Industrial Applications: Require robust and durable materials like metal and high-grade plastics.
  • Household Uses: Plastic and decorative materials to match the aesthetics.
  • Outdoor Applications: Weather-resistant materials for waterproofing and durability.

Environmental Considerations

The materials used in round push button switches must comply with environmental regulations. Consideration for recycling and the environmental impact is growing in importance.

How to Install a Momentary Push Button Switch?

Understanding the Type of Switch

Different types of momentary push button switches require various installation methods. Knowing the specific type and having a proper wiring diagram is vital.

Preparing the Tools and Area

Gathering the necessary tools and preparing the area ensures a smooth installation process. Safety measures, including turning off the power, are essential.

Step-by-Step Installation Guide

  1. Turn Off Power: Ensure the power is off to avoid electrical shock.
  2. Prepare the Wiring: Follow the wiring diagram specific to the switch.
  3. Connect the Switch: Securely connect the wires as per the diagram.
  4. Secure the Switch: Mount the switch in the desired location.
  5. Test the Functionality: Turn the power back on and test the switch to ensure proper operation. Find more installation guides here.

How to Troubleshoot a Round Push Button Switch?

Identifying the Problem

Common problems with round push button switches include failure to operate, intermittent operation, or physical damage. Identifying the specific issue is the first step in troubleshooting.

Common Troubleshooting Steps

  1. Visual Inspection: Check for visible damage or loose connections.
  2. Electrical Testing: Use a multimeter to test the switch’s functionality.
  3. Check Wiring Diagram: Ensure the wiring is correct and secure. Get emergency stop push buttons here.
  4. Replacement if Necessary: If the switch is faulty, replace it with a suitable alternative.

When to Call a Professional

If troubleshooting doesn’t resolve the issue, or if the problem is complex, it might be wise to call a professional electrician to avoid further damage or safety risks.

Where to Buy Round Push Button Switches?

Online Platforms

Online platforms offer a wide variety of round push button switches, including specialized ones like red small 2-pin momentary switches.

Local Electrical Stores

Local stores provide the advantage of immediate purchase and personal consultation with experts. However, they may have limited options compared to online platforms.

Considerations When Buying

  • Specifications: Ensuring the switch matches the application’s requirements.
  • Brand Reputation: Buying from well-known brands ensures quality.
  • Price: Balancing quality and cost according to the budget.
  • Warranty and Support: Checking the warranty and post-purchase support offered.

Customized Options

Some manufacturers offer customized round push button switches to meet specific requirements. Find customized power logo momentary switches here.

Final Thoughts on Round Push Button Switches

Round push button switches are versatile components used in various applications, from household appliances to industrial machinery. Understanding their types, operation, installation, and troubleshooting can help in choosing the right switch for the required application. With the availability of numerous designs, functionalities, and materials, these switches cater to diverse needs. By following the provided guidelines, one can effectively select, install, and maintain round push button switches. Visit Indicator Light’s website for a wide range of options and detailed information.

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