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UnionwellSnap Action Micro Switch Supplier in China
Unionwell's Snap Action micro switches are renowned for their snap-action mechanism and high reliability. They support a variety of operating forces, terminals, and mounting specifications, and are available in custom dust- and waterproof versions. They are suitable for door lock detection, travel limit switches, and industrial control systems. With excellent product quality and strict quality control, Unionwell has become the supplier of snap-action micro switches for many well-known companies.
● Snap Action: Snap action mechanism offers fast response and low latency.
● Long Life and Stability: Hundreds of thousands of mechanical lifespans, low contact resistance, and high reliability.
● International Certifications: Global safety certifications such as ISO, IATF16949, UL, cUL, and ENEC are certified.
● Compact and versatile: Lightweight and compact, it is easy to install.
Unionwell Snap Action Micro Switch Catalog
| Product Series | Datasheet | Voltage Rating | Temperature Range | IP Rating | Durability (Electrical / Mechanical) | Typical Applications |
|---|---|---|---|---|---|---|
| G303 Sealed Subminiature Micro Switch |  |
125/250VAC | -40℃ ~ +85℃ | IP67 | 100,000 / 500,000 cycles | Automotive, Car door, Industrial control |
| G5 Basic Micro Switch | |
125/250VAC/30VDC | -25℃ ~ +85℃ | none | 50,000 / 500,000 cycles | Microwave oven，Home appliance，Washing machine |
| G5W11 Waterproof and Dustproof Basic Micro Switch | |
125/250VAC/48VDC | -40℃ ~ +85℃ | IP67 | 50,000 cycles | Air Conditioning, Industrial Equipment |
| G6 Miniature Micro Switch | |
125/250VAC | -25℃ ~ +125℃ | none | 100,000 / 1,000,000 cycles | Air-conditioner, Small Appliances |
| G9 Sealed Mini Micro Switch | |
125/250VAC | -25℃~+120℃ | IP67 | 100,000 / 5,000,000 cycles | Automotive, Home appliances |
| G9A Sealed Miniature Micro Switch | |
125/250VA | -40℃ ~ +85℃ | IP40/IP67 | 50,000/200,000 cycles | Printers, Consumer Electronics |
| G10 Subminiature Micro Switch | |
125VAC | -40℃~+85℃ | none | 50,000/100,000 | Mouse, Gaming Devices |
| G10B Charging Gun Micro Switch | |
250VAC/30VDC | -40℃~+85℃ | IP65/IP67 | 10,000/100,000 | Charging Gun，Charging Pile Equipment,Charging Port Control |
| G13 Dustproof Micro Switch | |
250VAC | -40℃~+150℃ | none | 10,000/100,000 | Breaker |
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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.
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.
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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.
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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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What Is a Snap Action Micro Switch
Unionwell snap action micro switch, also known as a micro switch, typically refers to an electrical switch that utilizes a preloaded spring mechanism to quickly switch on and off within a very short stroke. The ability to instantly switch the circuit upon actuator triggering, resulting in a fast response, is one of the defining characteristics of a snap-action micro switch. Simply put, a snap-action micro switch is a compact, reliable switch that activates 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, it provides insulation, dustproofing, and mechanical protection for internal components. The housing also features positioning posts to aid in securing it to the device.
Snap-Action Spring & Moving Contact
This 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.
Contacts
A standard snap-action micro switch has COM (common), NO (normally open), and NC (normally closed) contacts. Highly conductive alloy materials and precise crimping ensure low contact resistance and long-term stable conduction.
Actuator (Actuator / Lever / Plunger)
Depending on the application, a plunger, lever, or roller handle can be installed. Its function is to trigger the switch's quick action by externally pressing the operating handle as required by the application.
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.
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.
Triggering 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.
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.
Excellent Operating Life & Long-Term Stability：
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
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.
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.
Snap Action Micro Switch Advantages
Snap Action Mechanism
The Snap Action micro switch utilizes a critical spring design for rapid tripping upon actuation, ensuring fast response.
Long Service Life
The internal contacts are constructed with wear-resistant materials, resulting in an average electrical life of 50,000 to 100,000 cycles and a mechanical life of 200,000 to 500,000 cycles. They are particularly suitable for high-repetition applications such as industrial automation, automotive, and home appliances.
Compact Design
A key feature of the Snap Action micro switch is its compact size, allowing it to be installed in a variety of delicate circuit systems.
Strong Compatibility
Because Snap Action micro switches are suitable for a wide range of applications, their parameter configurations are relatively uniform, making them compatible with various snap action switches.
Snap Action Micro Switch Disadvantages
Limited Protection
Compared to sealed, dust-proof and waterproof micro switches, conventional snap-action switches have less robust housing seals and are not suitable for use in high-humidity, oil mist, or dusty environments.
Low Load Capacity
The contacts of most standard models have limited current carrying capacity, making them suitable for low-power circuits. Contact erosion may occur when driving inductive loads or high-power devices.
Short Mechanical Stroke
As a typical snap-action mechanism, its actuation stroke is fixed and short, primarily providing a defined on/off action. It is not suitable for mechanical systems requiring long strokes or fine position adjustment.
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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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.
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2
How Long Is The Customization Lead Time For A Snap Switch?
Typically 3–6 weeks, depending on design requirements and tooling needs.
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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.
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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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