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UnionwellSnap Action Micro Switch

Snap action micro switches are compact electromechanical switches designed to provide rapid and repeatable contact transfer when a defined operating point is reached. Available with plunger, lever and roller actuators, they support different contact configurations, terminal layouts and mounting requirements.
Unionwell snap action micro switches are developed for automotive, industrial equipment, appliances, power tools and other applications requiring reliable position detection, limit control or status feedback. OEM and ODM customization is available for actuator dimensions, operating force, terminals, contact configuration and mechanical structure.

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snap action micro switch G38qq
UNIONWELL

Snap Action Micro Switches Type

Unionwell’s snap action micro switch waterproof products provide unmatched durability and reliability in harsh environments. Our snap action switches ensure precise, rapid switching, making them ideal for critical applications.
As a leading manufacturer of snap switches, Unionwell delivers high-quality, industry-standard solutions for your most demanding needs.
Clip Type Silent Sealed Micro Switch G304/6/9 Series
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Clip Type Silent Sealed Micro Switch G304/6/9 Series
Sealed Subminiature Micro Switch With Inner Resistor G3
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Sealed Subminiature Micro Switch With Inner Resistor G3
Global Safety Approvals Basic Micro Switch G5
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Global Safety Approvals Basic Micro Switch G5
Waterproof and Dustproof Sealed Basic Micro Switch G5W11
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Waterproof and Dustproof Sealed Basic Micro Switch G5W11
Customized Designs Miniature Micro Switch G6
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Customized Designs Miniature Micro Switch G6
Computer Mouse Micro Switch G10A
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Computer Mouse Micro Switch G10A
Subminiature Micro Switch G10
07

Subminiature Micro Switch G10
Dustproof Micro Switch G13
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Dustproof Micro Switch G13
Ultraminiature Micro Switch G15
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Ultraminiature Micro Switch G15
dpdt momentary micro switch
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dpdt momentary micro switch

Snap Action Micro Switch Selection Guide

Product Series Datasheet Voltage Rating Temperature Range IP Rating Durability (Electrical / Mechanical) Key Features Typical Applications
G303 Sealed Subminiature Micro Switch pdf 125/250VAC -40℃ ~ +85℃ IP67 100,000 / 500,000 cycles Compact sealed structure, silent operation, reliable switching Automotive, Car Door, Industrial Control
G5 Basic Micro Switch PDF 125/250VAC/30VDC -25℃ ~ +85℃ none 50,000 / 500,000 cycles General-purpose design, multiple actuators and terminals Microwave Oven, Home Appliances, Washing Machines
G5W11 Waterproof and Dustproof Basic Micro Switch PDF 125/250VAC/48VDC -40℃ ~ +85℃ IP67 50,000 cycles Waterproof and dustproof construction for harsh environments Air Conditioning, Industrial Equipment
G6 Miniature Micro Switch PDF 125/250VAC -25℃ ~ +125℃ none 100,000 / 1,000,000 cycles Miniature body, flexible configurations, high mechanical durability Air Conditioners, Small Appliances
G9 Sealed Mini Micro Switch PDF 125/250VAC -25℃~+120℃ IP67 100,000 / 5,000,000 cycles Sealed structure, long mechanical life, compact design Automotive, Home appliances
G9A Sealed Miniature Micro Switch PDF 125/250VA -40℃ ~ +85℃ IP40/IP67 50,000/200,000 cycles Compact sealed design for space-limited equipment Printers, Consumer Electronics
G10 Subminiature Micro Switch PDF 125VAC -40℃~+85℃ none 50,000/100,000 Small footprint, suitable for compact mechanisms Mouse, Gaming Devices, Electronics
G10B Charging Gun Micro Switch PDF 250VAC/30VDC -40℃~+85℃ IP65/IP67 10,000/100,000 Sealed structure for position and status detection Charging Gun，Charging Pile Equipment,Charging Port Control
G13 Dustproof Micro Switch PDF 250VAC -40℃~+150℃ none 10,000/100,000 Dust-resistant structure and wide temperature capability Circuit Breakers, Industrial Equipment

Note: Specifications may vary by exact model, contact configuration, terminal type, actuator and electrical rating. Please refer to the corresponding datasheet for detailed product specifications and confirm the exact part number before project validation.

Knowledge PopularizationSnap Action Micro Switch Guide

snap action micro switch
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What Is a Snap Action Micro Switch

A snap action micro switch, also known as a micro switch, is an electrical switch that uses a preloaded spring mechanism to make or break contacts rapidly within a very short stroke. The defining characteristic of a snap-action micro switch is its ability to switch the circuit instantly when the actuator is triggered, resulting in a fast response. In simple terms, a snap action micro switch is a compact, reliable switch that operates with a light push.

Snap Action Micro Switch Structure

The high stability of the snap action micro switch relies on its sophisticated internal design. The switch consists of a housing, movable contact, fixed contact, spring mechanism, actuator, and terminals. Each component plays a critical role in ensuring precise action and a reliable lifespan.

  • Housing:Molded from flame-retardant engineering plastic or thermoset material, the housing provides insulation, dust protection, mechanical strength, and secure positioning within the equipment.
  • Snap-Action Spring & Moving ContactThis is the core component of the snap-action switch. The preloaded spring is in an over-center configuration. When the trigger force reaches a critical point, the moving contact instantly jumps—enabling rapid switching, avoiding contact bounce, and extending electrical life.
  • Contact:COM, NO, and NC contacts support different circuit configurations. High-conductivity alloy contacts and precise assembly help maintain low contact resistance and stable electrical performance.
  • Actuator:Plunger, lever, and roller actuators provide different operating movements. They transfer external mechanical force to the internal mechanism, triggering the snap-action switching process.
  • Terminals:These are used to connect to circuits and are commonly available in Quick Connect, soldered, or PCB styles. Terminals provide a direct connection to system wiring, ensuring excellent conductivity and reliability.
Unionwell G5 Snap Action Micro Switch Structure

How the Snap Action Micro Switch works

How the Snap Action Micro Switch works

The snap-action micro switch's response process is generally divided into three steps: triggering, circuit switching, and resetting.When an external force is applied to the actuator, the quick-acting spring releases its stored energy, causing the switch to actuate instantaneously. This rapid actuation reduces contact bounce and improves the circuit's response speed.

  • Trrigering Action:When an external force is applied to an actuator (such as a button, wheel, or lever), the internal spring rapidly deforms, causing the contacts to jump from normally closed to normally open, completing the circuit transition.
  • Circuit Switching:Thanks to the quick action of the internal spring mechanism, micro switches can achieve rapid circuit switching in a fraction of a second, reducing contact arcing and improving response accuracy.
  • Reset Process:When the external force is released, the spring instantly returns to its original shape, returning the contacts to their initial position, ensuring the circuit is closed or opened again, achieving stable cycling action.
  • Actuator:Plunger, lever, and roller actuators provide different operating movements. They transfer external mechanical force to the internal mechanism, triggering the snap-action switching process.
  • Terminals:These are used to connect to circuits and are commonly available in Quick Connect, soldered, or PCB styles. Terminals provide a direct connection to system wiring, ensuring excellent conductivity and reliability.

Features of Snap Action Micro Switch

A Snap Action Micro Switch offers rapid switching, high durability, precise operation, compact size, and reliable performance, commonly used in automation and control systems.

Compact Design & Space-Saving Layout：

Unionwell's miniature snap action switches are engineered with a compact and lightweight design, making them suitable for applications where space is limited. This miniature form factor enhances versatility and integration possibilities.
Lighting Control: These switches for cars, are integral to lighting control systems in vehicles, enabling accurate switching of headlights, turn signals, and interior lighting.
Compact Design: Unionwell's miniature snap action switches are engineered with a compact and lightweight design, making them suitable for applications where space is limited. This miniature form factor enhances versatility and integration possibilities.
3.Excellent Operating Life: The micro switches feature a Single Pole, Single Throw (SPST) configuration, ensuring simple and reliable ON/OFF operation. The SPST micro switch is ideal for basic control applications where only one circuit needs to be opened or closed
3.High-Quality Construction: Unionwell prioritizes quality in manufacturing, ensuring that each snap action micro switch is built to withstand rigorous usage conditions. Robust construction materials and precision engineering guarantee durability and long-term performance.
3.Electric Micro Switches: These micro switches offer excellent electrical performance, including low contact resistance and high electrical insulation. This ensures reliable and efficient electrical connectivity in various automation systems.

Features

Snap Action Micro Switch Application

Industrial Automation Equipment

Snap-action switches are often used as limit switches and detection switches in industrial equipment, for mechanical limit switches, position detection, and travel feedback.

Automotive Systems

Micro switches are often deployed in safety-critical areas such as door locks, pedal sensors, and charging port locks.

Home Appliances

Almost all home appliances have micro switches, such as those used to control microwave oven doors, air conditioner dampers, and printer paper detection.

Control Panels

These automation microswitches are commonly integrated into control panels for equipment and machinery, offering precise control over essential functions.

Safety Devices

In safety-critical applications, such as emergency stop buttons and safety interlocks, Unionwell's snap action micro switches ensure prompt and reliable operation, contributing to the overall safety of personnel and equipment.

Consumer Electronics

From household appliances to electronic gadgets, these snap switches play a crucial role in providing user interface functionality, such as button activation and limit switch sensing.

Medical Equipment

In medical devices and equipment, where reliability and precision are paramount, Unionwell's snap-action micro switches offer dependable performance for various control and sensing applications.

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Applications of Microwave Micro Switches

G10 Snap Action Micro Switch | Vacuum Cleaner Application

The G10 micro switch is installed within the linkage mechanism of the vacuum cleaner's dust bin or top cover; it provides a reliable switching signal to the control system by detecting whether these components are correctly installed or closed. When components such as the dust bin or top cover are in the proper position, the mechanical structure actuates the microswitch to monitor the device's status, thereby preventing the device from starting if components are not correctly seated.

G10 Micro Switch

G5 Basic Micro Switch for Coffee Machine Control & Safety

Snap Action Micro Switches are commonly used inside coffee machines for lid position detection and control signal feedback. Installed near the coffee pot lid or mechanical linkage, the switch is actuated when the lid is properly closed. The resulting signal is sent to the control board to enable the water supply and brewing systems, allowing users to prepare coffee or hot water. At the same time, the switch provides a safety interlock by helping prevent the brewing system from operating when the lid is open, reducing the risk of exposure to high-temperature water from the shower outlet. Its fast and reliable switching action supports consistent operation and safety protection in coffee-making equipment.

G5 Basic Micro Switch

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Snap Action Micro Switch Product Drawing Description

Unionwell snap action micro switch features a compact precision design with COM/NO/NC contacts, rated up to 250VAC and 1–5A. Contact resistance ≤100mΩ, insulation resistance ≥100MΩ (500VDC), and dielectric strength 600VAC ensure stable electrical performance. Mechanical life exceeds 300,000 cycles, with operating force options from 50gf to 250gf and operating temperature range from -40℃ to +85℃.

The drawing below shows detailed dimensions, mounting holes, terminal layouts and actuator types including plunger, lever and roller lever. Multiple terminal options such as PCB, quick-connect and wire leads support flexible installation. With fast response, consistent actuation point and long service life, this snap action micro switch is ideal for industrial equipment, home appliances and automotive control systems.
G10 miniature Snap Action micro Switch

Snap Action Micro Switch Buying Guide

    Unionwell offers a comprehensive range of snap action micro switches tailored to diverse industrial and consumer needs. Here’s a step-by-step guide to streamline your purchasing process for these versatile switches:

    • 1. Determine Your Requirements: Identify the type, specifications, and quantity of snap action micro switches required for your application.
    • 2.Contact Unionwell: Reach out to Unionwell with your detailed requirements, including switch specifications, quantity, and delivery preferences. Our team will assist you in selecting the right products to meet your needs.
    • 3.Expert Guidance: If you unsure about which snap action micro switch suits your application best? Describe your requirements and application scenarios to our sales team. We’ll provide personalized recommendations and solutions to ensure optimal performance.

    If you are not sure which micro switch to buy, you can describe your needs and application scenarios, and our sales staff will provide you with the most suitable suggestions and solutions.

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    snap action micro switchjle

    Applications of Door Micro Switch in Different IndustriesAPPLICATION

    Home Appliances

    Home Appliances

    Microwave oven doors, washing machine door locks, refrigerator doors
    Learn More
    Automotive

    Automotive

    Door switches, door lock micro switches
    Learn More
    Industrial

    Industrial

    Industrial access control systems, automatic doors, container doors
    Learn More

    We Collaborate to Deliver More solutions

    At Unionwell, we specialize in delivering superior solutions with our automation micro switches. As a leading manufacturer, we work closely with our clients to provide high-performance, reliable, and durable switches tailored for diverse applications. Our commitment to quality ensures that our switches meet the highest standards of operational efficiency and reliability. Trust Unionwell to be your partner in achieving exceptional results and advancing your automation and electrical systems. Together, we drive innovation and excellence for all your switching needs.

    Quality Assuranceyse

    Quality Assurance

    We implement strict quality control standards, with rigorous oversight at every stage from raw material procurement to production manufacturing.
    Customization Serviceshye

    Customization Services

    We offer design and mold making services for micro switch components (plastic parts, metal parts), customized according to the design requirements of the customer. The customization scope includes switch body components and other switch accessories.
    Free Samplessxv

    Free Samples

    After confirming the product model, we provide 5-10 free samples to customers for testing before purchasing switches.
    Multiple Payment Methods9vm

    Multiple Payment Methods

    Payment methods are typically bank transfers. If you prefer other payment methods, you can communicate with the corresponding responsible person for assistance.
    FAQ
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    FAQ

    Unionwell

    • 1

      How Many Types Of Snap Switches Are There?

      There are several types, including basic snap switches, sealed (waterproof) versions, high-current models, and variants with different actuators like lever, roller, or plunger.

    • 2

      How Long Is The Customization Lead Time For A Snap Switch?

      Typically 3–6 weeks, depending on design requirements and tooling needs.

    • 3

      How To Distinguish The Snap Switches Of G6 And G9?

      Mainly distinguish them by the button. The button of G6 snap switch is long and has no sealing ring, while the button of G9 is round and has a sealing ring.

    • 4

      What Are The Main Operating Forces Of The G6 Snap Action Micro Switch?

      The operating forces of the G6 snap action micro switch are mainly 50 grams, 100 grams, 150 grams, 250 grams, 300 grams, and 350 grams. Forces above 250 grams are only applicable to spring-type ones.

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