Product Category


Push To Open Switch

  • Name:Push To Open Switch
  • Model:GQB19
  • Head Type:Falt Head
  • Size:16mm
  • Switching Functions:Momentary
  • Contact Configuration:1NO
  • Rated Voltage: 3mA~15A
  • Voltage Options:12V-250V /DC
  • Material:ABS plastic, Plastic
  • Download Certification:CECCC, ROSH, UL

Product Drawings

Push To Open Switch

Product Parameters:

Product Name Push To Open Switch
Operation Type Latching
Light Voltage DC 12V
Contact Type 1NO
Material Plastic
Mounting Hole Dia. 16mm
Included Components Micro Switch (optional, not included)

Related products:

The Ultimate Guide to Understanding Push to Open Switches

Navigating the world of push to open switches can be complex, whether you’re installing one for the first time, aiming to understand the differences between normally open and normally closed momentary switches, or simply wondering how to maintain them for long-lasting use. This comprehensive guide delves into the most frequently asked questions about push to open switches, offering valuable insights into their installation, testing, customization, and much more. Whether you’re a DIY enthusiast or a professional, read on to gain an in-depth understanding of these versatile switches and make informed decisions for your specific needs.

What is a Push to Open Switch?

A push to open switch is a type of momentary switch that changes its state only when it’s pressed, returning to its original state once released. These switches are commonly found in a variety of applications including door systems, cabinets, and electrical appliances. They can be either a normally closed momentary switch or a normally open momentary switch, depending on the circuit requirements.

User Perspective

From the user’s perspective, a push to open switch is generally easy to operate. Simply press it, and the desired action occurs—whether it’s opening a cabinet door or turning on a device.

Engineer’s Viewpoint

From an engineering standpoint, these switches offer the advantage of simplicity and efficiency. They are easy to install and generally require less maintenance compared to other types of switches.

Manufacturer’s Angle

Manufacturers like these switches for their versatility and broad range of application. They can be customized with various button shapes, sizes, and colors, and are often more cost-effective to produce.

To delve deeper into the mechanics and wiring of push-to-open switches, you can check out What is a Push Button Switch?.

How Does a Push to Open Switch Work?

The operation of a push to open switch varies depending on whether it’s a normally closed momentary switch or a normally open momentary switch.

Normally Closed Momentary Switch

A normally closed momentary switch starts in a ‘closed’ circuit state, meaning electricity can flow through it. When you press the button, the circuit opens, interrupting the electrical flow.

Normally Open Momentary Switch

Conversely, a normally open momentary switch starts in an ‘open’ circuit state, meaning no electricity can flow. When pressed, the circuit closes, allowing electrical flow.

Combination Types

Some switches can operate both as normally closed and normally open, depending on the wiring and the specific application.

To learn more about how these switches work, you can refer to How Does a Push Button Switch Work?.

What are the Different Types of Push to Open Switches?

There are various types of push to open switches, including SPST push button switch, momentary push button switch, and NC push button switch.

SPST Push Button Switch

SPST (Single Pole Single Throw) push button switches are simple on-off switches. They connect two terminals together when pressed and are usually normally open.

Momentary Push Button Switch

These switches change state during the moment they are pressed but return to their original state when released. They can be either normally closed or normally open.

NC Push Button Switch

NC (Normally Closed) push button switches are closed circuit switches that open when pressed.

To explore more types, check out Push Button Switches Catalog.

What are the Common Applications for Push to Open Switches?

Push to open switches are versatile, finding applications in a myriad of fields.

Domestic Usage

In households, they are commonly used in cabinets and small electric appliances.

Automotive Sector

In the automotive industry, they’re often used as momentary car push button ignition switches.

Industrial Application

In industrial settings, they are used for machinery controls, emergency stops, and more.

For an extensive list of applications, you might be interested in Push On/Off Switch Applications.

How Do You Wire a Push to Open Switch?

The wiring process can differ based on the type of push to open switch and its application.

Basic Wiring

For most switches, you’ll have at least two terminals: one for the input (or ‘hot’ wire) and one for the output.

LED Integration

Some switches come with an integrated LED, requiring additional wiring to power the light.

Advanced Wiring

In complex systems, the switch may need to be integrated into a larger circuit, requiring a more complicated wiring scheme.

For step-by-step wiring guidance, you can refer to How to Wire a Push Button Switch.

What are the Electrical Specifications for Push to Open Switches?

The electrical specifications of a push to open switch include its voltage and current ratings, often denoted as 12V momentary switch normally closed, for example.

Voltage Ratings

These switches often come with voltage ratings, such as 12V, which should not be exceeded to ensure safe operation.

Current Ratings

Current ratings, often measured in amperes, indicate the maximum current that can flow through the switch without causing damage.


Some switches come with both voltage and current ratings, specifying the maximum operating conditions.

To choose the right switch based on electrical specifications, check out Switch Push Button Catalog.

How Do You Choose the Right Push to Open Switch?

Choosing the right push to open switch involves multiple factors, including the type, electrical specifications, and application requirements.

Understanding the Application

First, understand the application where the switch will be used. This will help in deciding whether you need a normally closed or normally open switch.

Checking Electrical Specifications

Ensure that the switch’s voltage and current ratings align with your application’s needs.

Durability and Material

Also, consider the material and build quality, especially for switches that will be used in harsh environments.

To understand how to select switches based on different criteria, check out Push Button LED Light Choices.

How Do You Install a Push to Open Switch?

The installation process of a push to open switch can vary based on its type and application. However, there are general guidelines that can help ease the installation process.

Basic Installation

For a basic installation, you might only need to mount the switch into a pre-cut hole and connect the wires to the appropriate terminals.

Wiring Complexity

Some switches might require more complex wiring, especially if they come with LEDs or are part of a more complicated circuit.

Safety Precautions

Always turn off the power to the circuit where you’re installing the switch to prevent electrical shock or other hazards.

Professional Assistance

If you’re not comfortable handling electrical work, it might be best to consult a professional for the installation.

For more detailed instructions on wiring, you can visit How to Connect a Push Button Switch.

How Do You Test a Push to Open Switch?

Testing is a critical part of ensuring that your push to open switch is functioning as expected.

Continuity Test

A simple continuity test with a multimeter can confirm whether the switch is in its ‘normally open’ or ‘normally closed’ state.

Functional Test

For a more practical test, you could wire the switch to its intended application and check its operation under real conditions.

Professional Testing

Some specialized switches, particularly those used in industrial applications, might require professional testing to meet safety and quality standards.

For more on how these switches are wired for testing, you can consult How is the Push Button Switch Wired?.

What are the Maintenance Requirements for a Push to Open Switch?

Maintenance of a push to open switch depends on its usage and environmental conditions.

Regular Inspection

Regular inspections can help identify wear and tear or any potential problems before they become major issues.


Depending on the environment in which it’s used, the switch might need periodic cleaning to remove dust, grime, or other contaminants.


Eventually, all switches wear out and will need to be replaced. Signs that a switch needs replacing include inconsistent operation and visible damage.

To explore more about switch maintenance, have a look at Push Button Power Switch Maintenance.

How are Push to Open Switches Different from Other Types of Switches?

Push to open switches differ from other types in their operation, design, and applications.

Momentary Operation

Unlike toggle or rocker switches, which stay in the ‘on’ or ‘off’ position until manually changed, push to open switches return to their default state once released.


They are generally simpler in design and operation, making them suitable for applications that require quick, momentary actions.


These switches are incredibly versatile, suitable for both simple household applications and complex industrial machinery.

For more on how push to open switches compare to other types, you can refer to Push Button Switch Waterproof Vs Non-Waterproof.

What are the Available Customization Options?

Customization can extend from the aesthetics to the technical aspects of a push to open switch.

Custom Colors and Symbols

Some manufacturers offer customization options such as colors, symbols, or even text on the button.

Material Choices

You could also choose from a variety of materials like plastic, metal, or even glass for high-end applications.

Technical Customizations

Some manufacturers offer technical customizations like higher voltage or current ratings, integrated LEDs, or additional functionalities.

For more on customizing push to open switches, check out Latch Metal Push Button Switch with LED Customization.

How Does a Normally Closed Momentary Switch Differ from a Normally Open Momentary Switch?

Understanding the difference between a normally closed momentary switch and a normally open momentary switch is crucial for selecting the right push to open switch for your needs.

At Rest State

A normally closed momentary switch is closed when it’s at rest, allowing current to flow. Conversely, a normally open momentary switch is open when at rest, meaning no current flows.

Circuit Control

In normally closed configurations, pressing the switch interrupts the circuit. In normally open configurations, pressing the switch completes the circuit.

Application Suitability

Normally closed momentary switches are often used in safety applications where an interruption can signal a machine to stop. Normally open momentary switches are commonly found in start buttons for machines.

For more details on these terms and how they relate to push button switches, refer to What is a Push Button Switch?.

What Are SPST Push Button Switches?

SPST, or Single Pole Single Throw, push button switches have one input and one output and a single operational position.


Due to their basic design, SPST push button switches are straightforward to use and install.

Common Applications

These are common in applications where you only need to control a single function—like turning a light on or off.


Despite their simplicity, SPST push button switches are versatile and used in both low- and high-voltage applications.

For further insights into SPST switches and their wiring, consult How to Wire Push Button Switch with LED.

Can 12V Momentary Switch Normally Closed Be Used in 24V Systems?

The voltage rating is an essential factor to consider when installing a push to open switch, particularly a 12V momentary switch that is normally closed.

Voltage Ratings

12V switches are generally designed for 12V systems and may not handle the increased voltage of a 24V system effectively.

Safety Risks

Using a 12V switch in a 24V system can lead to overheating, and potential failure, posing safety risks.

Professional Consultation

If you have a 12V momentary switch and wish to use it in a 24V system, consult with a professional for a safe and effective solution.

For more technical details on voltage compatibility, you can visit Push Button Switch 12V.

What is the Significance of Momentary Push Button Switches in Electrical Circuits?

Momentary push button switches play a crucial role in electrical circuits for various reasons.

Quick Operations

Their primary function is to perform quick operations like starting or stopping a machine momentarily.

User Interface

They serve as an effective user interface in numerous applications, making it easy for operators to control equipment.


In some instances, momentary push button switches serve as emergency stop buttons, enhancing safety measures in the circuit.

For a deeper understanding of their role, check out How Does a Push Button Switch Work?.

Why Use a NC Push Button Switch in Safety Circuits?

NC, or Normally Closed, push button switches are particularly important in safety circuits.

Immediate Action

Being normally closed, pressing the switch immediately interrupts the circuit, which can signal a machine to stop operations.


The NC push button switch allows for redundant safety measures, as any fault in the switch will also result in an open circuit, triggering safety mechanisms.

Fail-Safe Mode

The use of NC switches ensures that the system goes into a fail-safe mode when the switch is activated, thus preventing accidents.

To further explore the safety aspects of these switches, take a look at Push Button Switch On/Off Safety.


Understanding the nuances of push to open switches, their types like normally closed momentary switches and SPST push button switches, as well as their applications, can significantly aid in the selection, installation, and maintenance processes. From basic household utilities to complex industrial applications, the right switch can make all the difference. Whether you need to know how they are installed, tested, or maintained, this comprehensive guide aims to cover all aspects of push to open switches.

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