UnionwellSealed Micro Switch Manufacturer for Autotive & OEM Applications

Unionwell's sealed switch series is a highly sealed waterproof and dustproof switch with IP67 switch function. Therefore, it is widely used in dusty or humid working environments, such as car doors, hood locks, electric toothbrushes, ice makers, sweeping robots, etc. In order to facilitate selection for different application fields, we kindly recommend various models for you below, including sealed subminiature switch, Hermetically Sealed Switch, Sealed Push Button Switch, etc.

To meet special application requirements, we offer customized mass production of sealed micro switches. Lever type, terminal configuration, and operating force can be tailored to your project specifications. Free samples are available for evaluation and testing.

• IP40–IP67 waterproof micro switches for demanding environments

• Automotive-grade sealing structure for long-term reliability

• OEM & fully customized design support

• Multiple lever types, terminal options, and operating force selections

• Strict quality control with long mechanical and electrical lifespan

• Strong bulk production capacity for global OEM customers

• Free samples available for testing and validation

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A video gives you a comprehensive understanding of Unionwell Sealed Micro Switch, helping you choose a more suitable model.

UNIONWELL

Durable and Reliable Sealed Micro Switches

Explore our full range of sealed micro switches for different applications and environmental requirements.

Our Sealed Micro Switch range offers a variety of series, including the G3, G5W11, and G9, each designed to meet the rigorous demands of industrial and commercial applications. The G3 Series stands out with a dielectric strength of 500VAC and an IP67 rating, ensuring both water and dust resistance. These compact switches are globally approved for safety, feature high reliability, and offer multiple lever and wiring terminal options, making them ideal for automotive electronics and industrial controls.

The G5W11 Series is engineered for extreme conditions, operating effectively in temperatures ranging from -40°C to +85°C and humidity up to 85%RH. These switches boast a maximum current rating of 10A under ENEC/UL standards and are widely used in automotive, agricultural, and home appliance applications. The G9 Series excels in high-temperature environments up to 120°C, offering robust dielectric strength and compact design.

If you're sourcing across multiple switch types, you may find our micro switch supplier page helpful for your selection.

Parameter

Operating Frequency	Electrical	0.1A,120 cycles/min 3A,10~30 cycles/min
	Mechanical	120 cycles/min
Contact Resistance (Initiative)		100mΩ Max.(without wire type)
Insulation Resistance (at 500VDC)		100MΩ Min.
Vbration Durability		10~55Hz,move 0.75mm(p-p)
Dielectric Strength		500VAC(50~60Hz)
Operating Temperature		-40℃~+85℃
Operating Humidity		85%RH Max
Service Life	Electrical	Min.100,000 cycles (Depend on part NO.)
	Mechanical	Min.500,000 cycles

Sealed Switch

Linked Sealed Tact Switch - G1&G17 Series PDF
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Sealed Rotary Switch - G2 Series PDF
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Sealed Subminiature Micro Switch - G303 Series PDF
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Sealed Subminiature Micro Switch - G303AB Series PDF
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Sealed Clip Type Subminiature Micro Switch - G304A Series PDF
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Sealed Clip Type Subminiature Micro Switch - G304B Series PDF
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Slide Structure Sealed Subminiature Micro Switch - G304D Series PDF
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Sealed Clip Type Subminiature Micro Switch - G304E Series PDF
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Sealed Clip Type Subminiature Micro Switch - G304F Series PDF
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Sealed Clip Type Subminiature Micro Switch - G304G Series PDF
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Waterproof Subminiature Micro Switch - G305 Series PDF
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Sealed Clip Type Subminiature Micro Switch - G306 Series PDF
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Sealed Dual Loop Subminiature Micro Switch - G307A Series PDF
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Sealed Triple Loop Subminiature Micro Switch - G307B Series PDF
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Sealed Clip Type Subminiature Micro Switch - G309 Series PDF
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Sealed Basic Micro Switch - G5W11 Series PDF
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Sealed Mini Micro Switch - G9 Series PDF
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Sealed Miniature Micro Switch - G9AB Series PDF
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Subminiature Micro Switch- G10 Series PDF
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Subminiature Micro Switch - G10A Series PDF
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Seal Type Subminiature Micro Switch - G10B Series PDF
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Mounting Hole Waterproof Subminiature Micro Switch - G10B Series PDF
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Waterproof and Dustproof DPDT Limit Micro Switch - G11 Series PDF
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Waterproof Swing Rotary Switch - G16 Series PDF
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Waterproof Seat Adjustment Switch - G19 Series PDF
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Motor Electronic Lock for Charging - G23A Series PDF
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Motor Electronic Lock for Charging - G23B Series PDF
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ATEX Explosion Proof Refrigerator Door Switch - SWD Series PDF
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Durable Sealed Rotary Switch with Custom Options

●It uses highly protective materials, has certain corrosion resistance, and meets IP67 dust and water resistance.

●There are many product categories, and each field has targeted product types

●The operating levers are diversified, including long levers, roller levers, sliding levers, etc.

●High durability, long service life, generally up to 500,000 times, and a service life of 7 to 8 years.

●Customizable purchase, customized production can be carried out according to your project needs, and free sample testing is provided.

Why Choose Sealed Micro Switches?

Sealed micro switches are the preferred control components in the industrial and automotive sectors due to their excellent environmental protection. Compared to ordinary micro switches, sealed micro switches offer superior protection against dust, moisture, and oil mist intrusion, meeting the application requirements of dustproof and waterproof micro switches. This environmental adaptability directly impacts operational reliability in industrial, automotive, and outdoor equipment.

For equipment manufacturers, reliability not only represents performance but also reduces maintenance costs. Reliable sealed micro switches reduce downtime and after-sales issues caused by failure, helping companies improve overall product quality and customer satisfaction. Therefore, whether dustproof, waterproof, or sealed snap action switches, they have become essential core components of high-end equipment.

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Automotive Applications of Sealed Micro Switches

●Door Locking System: Sealed microswitches are used to detect the door lock status, ensuring accurate signal transmission from the central locking system and vehicle security systems.

●Railgate Locking System: These monitor the open and closed positions of the trunk lid or luggage compartment, helping the vehicle control system confirm a secure lock.

●Seat Adjustment Switch: In the power seat mechanism, sealed microswitches detect position limits and provide precise control signals for seat movement.

●Seatbelt Reminder System: Sealed micro switches detect whether the seatbelt is properly fastened, enabling the vehicle to trigger a safety reminder alarm.

●Sun Visor: Sealed miniature switches can be used to detect the open/closed state of the vanity mirror cover and automatically activate the interior mirror illumination.

●Charging Port Locking System: In electric vehicles, many charging port locking actuators use Unionwell G23 waterproof micro switches to confirm the connector insertion and locking status. Learn more about micro switches for EV charging and outdoor stations.

Automotive application of sealed micro switch

What is a Sealed Micro Switch?

A sealed micro switch is a precision switch with a momentary actuation mechanism. Its sealed housing prevents dust, moisture, and other environmental factors from entering the internal contact area, ensuring signal stability and long-term reliability. Based on protection levels, it is generally divided into dustproof and waterproof types.

Dustproof micro switches typically achieve an IP40 rating, effectively blocking particles larger than 1mm from entering, preventing dust accumulation that could lead to poor contact or malfunction. They are suitable for dusty environments such as textile machinery, home appliances, and power tools.

Waterproof micro switches are typically IP65 or IP67 rated, able to withstand water jets, high humidity environments, and even short-term immersion. They protect the contacts with sealant or a double-layer sealing structure to prevent moisture corrosion. Widely used in automotive door locks, outdoor control equipment, and kitchen appliances, they represent a highly reliable sealed quick-acting switch solution.

If you'd like to learn more about IP ratings, you can read 《What's a Waterproof MicroSwitch and Why Use It?》 and 《IP67 vs. IP68: Which Waterproof Rating Suits Your Application Better?》

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Commitment To Exceptional
Innovation & Quality

Feature

Advantages

Application

Sealed Micro Switch Feature

Sealing

Our sealed micro switches use advanced sealing technology and meet IP67 protection performance, which is higher than the common IP40, IP65 and other sealing performance. It can effectively prevent water and dust from entering the switch, and it can work stably for more than half an hour even if it is completely immersed in water.

High Temperature Resistance

Excellent temperature resistance is a prerequisite for the stable operation of the switch. Unionwell's sealed micro switches have undergone rigorous temperature resistance tests to ensure stable operation in the range of -40°C~+85°C. They can easily cope with the high temperature working environment of automobile engines and industrial equipment.

Multiple Voltage Specifications

It has multiple rated voltage specifications, such as 250VAC/15A, 125VAC/5A and other rated voltage specifications to choose from, suitable for high-load equipment applications.

Durability

High sealing often leads to high durability. The electrical life of this type of micro switch can reach 100,000 times, the mechanical life can reach 500,000 times, the service life can reach 7 to 8 years, and it has a strict test report.

Multiple Lever Types

A variety of lever types are available, including basic levers, long levers, roller levers, sliding levers, and even custom levers. This ensures that you can choose the right micro switch lever type for your project needs.

Advantages Of Unionwell Sealed Switches

We have reduced production costs through years of research, innovative technology and the introduction of advanced production equipment, aiming to provide you with low-priced and high-quality sealed micro switches.

Compact Size

Compared with ordinary micro switches, it has a smaller size and the overall length is less than the width of a thumb, which makes it easier to install in small devices.

Easy To Install

The circuit connection is sealed inside the opening, the bottom is sealed with glue filling technology, and it is connected with a variety of terminals, which is more convenient to install directly into the application.

Lower Production Costs

Unionwell is located in Huizhou, China, with cheap raw materials, and the sealing technology and materials are provided by directly controlled subsidiaries. This means that we can provide the world's leading sealed switches at a lower price, achieving true value for money.

Application Of Sealed Micro Switches

The excellent performance of sealed switches makes them widely used in automobiles, home appliances, electronic consumer products, industrial equipment and other fields.

Automotive

Sealed switches are key components of automobile detection systems. For example, G3 ultra-small micro switches and G9sealed mini micro switches are often used in automobile door lock systems to achieve position detection functions. Another example is the G19 waterproof sealed seat switch used in automobile adjustment systems to provide passengers with more precise seat adjustment functions.

Household Appliances

There are also many sealed switches hidden in household appliances, such as the G5W11 waterproof and dustproof micro switch, which is mostly used in ice makers, sweeping robots and other systems. It provides steering control detection in sweeping robots. Another example is the SWD refrigerator door switch, which is more common and is located inside the refrigerator. When the refrigerator door is closed, the switch is pressed to disconnect the circuit and turn off the refrigerator light. In addition, there are more common types of door micro switches, such as Whirlpool microwave door switches.

Consumer Electronics

The small size of sealed micro switches allows them to be installed in small devices such as mobile phones, walkie-talkies and toys. G9A waterproof miniature micro switches and G10 subminiature are often used in walkie-talkie control systems. Another common example is the keyboard switch we use every day, which is actually a type of micro switch. Unionwell has recently launched a new Tesla magnetic axis keyboard switch, which is a testimony to our technological innovation.

Industrial Equipment

Industrial equipment is often in a harsh working environment with heavy humidity, so the application of sealed switches is essential. The G11 DPDT dustproof limit switch is an ideal choice for industrial equipment control switches. Another example is the G12 basic limit switch, which some customers have integrated into the control operating system of a tower crane. Each operating lever uses 4 of these roller-type limit switches, corresponding to the four directions of front, back, left, and right.

Application of Sealed Micro Switches

Sealed micro switches are widely used in automotive door locks, industrial limit switches, home appliance safety systems, and medical device controls. Their highly protective design resists dust, moisture, and oil, ensuring stable triggering and precise feedback even in high-frequency operation and harsh environments. For equipment manufacturers seeking reliability and durability, sealed micro switches not only ensure safe operation but also effectively reduce maintenance costs. As core actuators, they provide long-lasting, reliable control support for a variety of critical systems.

Home Appliances

●Microwave Ovens
●Washing Machines
●Air Conditioners

Automotive Parts

●Car Door
●Automotive Door Locks
●Car Seat Adjustment Switch
●Car Back Door Locks
●Seat Belts

Industrial Equipment

●Tower Crane Controllers
●Sensor Protection

Your Trusted Partner for Advanced Sealed Micro Switch Solutions

At Unionwell, we are committed to providing top-quality solutions with our Sealed Micro Switches. As a leading sealed micro switch supplier, we collaborate closely with our clients to deliver high-performance, reliable, and durable switches tailored for various applications, such as automotive, home appliances, communication devices, and industrial control. Our hermetically sealed micro switches are designed to withstand extreme conditions, ensuring superior operational efficiency and reliability. Choose Unionwell as your partner for innovative, high-quality solutions that meet and exceed your needs.

Quality Assurance

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

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 Samples

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

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.

Sealed micro switch production process

1.Selection Switch Model

Selecting the correct switch model is the first step in the manufacturing process. It should be based on a comprehensive consideration of the application environment, load characteristics, and protection requirements. For example, the G3 series IP67 waterproof ultra-miniature micro switch is a perfect match for most automotive models.

2.Drawing Design

Based on the customer's selected model and actual application requirements, 3D drawings are created. Engineers produce precise structural and circuit diagrams, clearly defining dimensions, circuitry, and location parameters.

3.Mold Fabrication

According to the drawing specifications, suitable materials are selected and precision-machined to create the mold. This stage ensures mold opening accuracy, cavity surface finish, and wear and corrosion resistance to produce a suitable sealed switch housing.

4.Sealed Microswitch Assembly

In a clean environment, contacts, springs, terminals, and housing are precisely assembled in sequence. Automated/semi-automatic equipment ensures consistent installation positions and correct pre-pressurization, providing structural assurance for sealing performance while reducing human error.

5.Sealing Treatment

A top sealing ring and bottom potting process is used to form a waterproof and dustproof barrier. It is ensured that the adhesive is uniform, bubble-free, and has a controlled curing time; or that the sealing ring is accurately positioned and fits tightly to the housing, thus guaranteeing IP rating requirements.

6.QC Testing

After assembly, multiple tests are performed, including electrical life testing, contact resistance measurement, insulation withstand voltage testing, high and low temperature cycling, and vibration and shock testing. Key parameters are monitored using Statistical Process Control (SPC) to ensure that each batch of products meets design and specification requirements.

7.Experimental Testing

Waterproofing and immersion tests are conducted in real or simulated application environments, strictly adhering to IP67 testing standards, with performance tested after immersion in 15 cm of water for 30 minutes.

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Why Choose Sealed Micro Switch

Due to their superior environmental protection capabilities, sealed micro switches have become commonly used control components in industrial equipment and automotive electronic systems. Compared to ordinary micro switches, sealed micro switches offer stronger dustproof, moisture-proof, and oil mist-resistant capabilities, meeting the application requirements of dustproof and waterproof micro switches in complex environments, thereby improving the operational stability of equipment in harsh environments.

Superior Sealing Performance
Sealed micro switches typically achieve an IP67 protection rating, effectively preventing dust and moisture from entering the internal structure, protecting the contacts and ensuring long-term stable operation of the switch.
Compact Structure and Easy Installation:
The internal terminals feature a pre-encapsulated design, eliminating the need for additional potting, resulting in a more compact structure and facilitating rapid integration and installation in various devices.
High Reliability and Long Lifespan:
Sealed quick-acting switches can withstand high-frequency operation, exhibiting stable triggering performance and a long service life, effectively reducing equipment maintenance costs.
Wide Applications:
Widely used in automotive door locks, tailgates, reading lights, as well as industrial equipment and home appliance control systems, they are crucial components ensuring reliable equipment operation.

Customized Sealed Micro Switches

Sealed Micro Switch Buying Guide

Unionwell’s sealed micro switches come in various specifications and models, ensuring that customers can find the perfect match for their specific application requirements. As a leading micro switch manufacturer, whether you need switches for automotive, industrial, or consumer electronics applications, Unionwell has you covered. This guide will help you navigate the buying process for Unionwell’s sealed micro switches.

First determine the type, specification and quantity of micro switches you need to purchase.
Provide us with your detailed requirements, including switch specifications, quantity and delivery time, etc.

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.

Why Choose Us as Your Sealed Microswitch Manufacturer

Choosing the right manufacturer of sealed microswitches is crucial for product reliability and long-term stable supply.

Stable Production Capacity

Our factory is equipped with automated production lines, focusing on the large-scale manufacturing of Sealed Micro Switches and Automotive Micro Switches, ensuring stable support for OEM projects and long-term supply needs.

Sealing Technology

Unionwell's sealed microswitches feature a stable and reliable sealing structure design, employing potting compound and top sealing rings to effectively resist the effects of moisture and dust. They meet IP67 protection standards.

Engineering Team Support

Engineering Team Support Unionwell boasts an experienced engineering team, with many engineers possessing over 30 years of R&D experience. They can provide product selection and replacement support based on customers' existing switches, and also support OEM and ODM.

Quality Control

Unionwell has established a comprehensive quality control system and rigorous product testing procedures. All products meet the certification requirements of various national markets.

Global Supply and OEM Experience

Unionwell has extensive experience in international OEM projects, enabling it to provide global customers with a stable supply chain and continuous supply capabilities.

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Unionwell Manufacturing Capabilities

Unionwell specializes in the research, development, and manufacturing of sealed micro switches. From material selection to fully automated production and quality verification, we adhere to industrial standards. Through a comprehensive certification system and customization capabilities, we ensure we provide global customers with stable, reliable, and professional switch solutions suitable for harsh environments.

1

Material Selection

We use high-temperature-resistant engineering plastics and high-conductivity copper alloy contacts to ensure low contact resistance and stable lifespan even under high loads and high frequencies. Each material is rigorously screened to meet the long-term reliability requirements of the automotive and industrial sectors.
2

Manufacturing Process

The entire production process utilizes automated assembly lines, combined with life testing, IP protection testing, and high-temperature and humidity testing to ensure that each switch maintains stable operating force and consistent actuation performance in extreme environments.
3

Quality Certification

Unionwell has achieved ISO9001 and IATF16949 quality system certifications and holds international certifications such as UL, CE, and RoHS. We provide traceable and verifiable manufacturing assurance for global OEM projects, meeting the compliance requirements of automotive electronics and industrial controls.
4

OEM/ODM

We support customized development of electrical parameters, external structure, contact materials, and terminal configurations. We offer a one-stop service from engineering samples to mass production delivery, meeting the personalized needs of specific operating conditions and industry standards.

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FAQ

What is a sealed switch?

A sealed switch is an electrical device enclosed within a protective casing, shielding its internal components from environmental factors such as dust, moisture, and debris. This casing creates a barrier that prevents contaminants from entering the switch mechanism, ensuring its reliability and longevity. Sealed switches are commonly used in various industries and applications where exposure to harsh conditions is prevalent, such as automotive, industrial, and outdoor settings.

What wires are usually used for Unionwell sealed switch G303?

The most commonly used wire gauge is UL1007.

What operating forces can the G5W11 sealed switch have?

The main operating forces of the G5W11 sealed switch are 15 grams, 25 grams, 50 grams, 100 grams and 200 grams, of which 15 grams and 25 grams are only suitable for small currents of 0.1A.

Why is the maximum current of our G9 series sealed switch 6A IP67, while our G91 series can reach 10A IP40? Can the G9 current reach 10A IP67?

G91 Is not sealed, but can reach 10A. G9 miniature micro switch is sealed, but the heat of the current cannot be dissipated, so it is difficult to reach 10A.

What is the main purpose of the G11 sealed switch?

The G11 sealed switch is mainly used on electric valves with explosion-proof requirements.

What are the main applications of the G16 series sealed micro switches?

The G16 sealed micro switches are mainly used in car door locks.

Can sealed micro switches be customized for automotive systems?

Yes. We offer OEM/ODM customization for automotive applications, including operating force, terminals, waterproof grade, and actuator design to meet specific vehicle standards.

What’s the MOQ for bulk orders?

The minimum order quantity is 1,000 pieces, ensuring stable production and quality consistency for large-scale manufacturing needs.

Do you provide samples for testing?

Yes. Sample units are available for performance verification, allowing engineers to conduct fit, function, and durability testing before bulk purchase.

SEND YOUR INQUIRY DIRECTLY TO US

UnionwellSealed Micro Switch Manufacturer for Autotive & OEM Applications

Durable and Reliable Sealed Micro Switches

G1&G17

G2

G3

G5W11

G9

G9A

G10

G10A

G10B

G11

G16

G19

G23

SWD

Parameter

Sealed Switch

Linked Sealed Tact Switch - G1&G17 Series PDF

Sealed Rotary Switch - G2 Series PDF

Sealed Subminiature Micro Switch - G303 Series PDF

Sealed Subminiature Micro Switch - G303AB Series PDF

Sealed Clip Type Subminiature Micro Switch - G304A Series PDF

Sealed Clip Type Subminiature Micro Switch - G304B Series PDF

Slide Structure Sealed Subminiature Micro Switch - G304D Series PDF

Sealed Clip Type Subminiature Micro Switch - G304E Series PDF

Sealed Clip Type Subminiature Micro Switch - G304F Series PDF

Sealed Clip Type Subminiature Micro Switch - G304G Series PDF

Waterproof Subminiature Micro Switch - G305 Series PDF

Sealed Clip Type Subminiature Micro Switch - G306 Series PDF

Sealed Dual Loop Subminiature Micro Switch - G307A Series PDF

Sealed Triple Loop Subminiature Micro Switch - G307B Series PDF

Sealed Clip Type Subminiature Micro Switch - G309 Series PDF

Sealed Basic Micro Switch - G5W11 Series PDF

Sealed Mini Micro Switch - G9 Series PDF

Sealed Miniature Micro Switch - G9AB Series PDF

Subminiature Micro Switch- G10 Series PDF

Subminiature Micro Switch - G10A Series PDF

Seal Type Subminiature Micro Switch - G10B Series PDF

Mounting Hole Waterproof Subminiature Micro Switch - G10B Series PDF

Waterproof and Dustproof DPDT Limit Micro Switch - G11 Series PDF

Waterproof Swing Rotary Switch - G16 Series PDF

Waterproof Seat Adjustment Switch - G19 Series PDF

Motor Electronic Lock for Charging - G23A Series PDF

Motor Electronic Lock for Charging - G23B Series PDF

ATEX Explosion Proof Refrigerator Door Switch - SWD Series PDF

Durable Sealed Rotary Switch with Custom Options

Why Choose Sealed Micro Switches?

Automotive Applications of Sealed Micro Switches

What is a Sealed Micro Switch?

Commitment To Exceptional Innovation & Quality

Sealed Micro Switch Feature

Sealing

High Temperature Resistance

Multiple Voltage Specifications

Durability

Multiple Lever Types

Advantages Of Unionwell Sealed Switches

Compact Size

Easy To Install

Lower Production Costs

Application Of Sealed Micro Switches

Automotive

Household Appliances

Consumer Electronics

Industrial Equipment

Application of Sealed Micro Switches

Home Appliances

Automotive Parts

Industrial Equipment

Your Trusted Partner for Advanced Sealed Micro Switch Solutions

Quality Assurance

Customization Services

Free Samples

Multiple Payment Methods

Sealed micro switch production process

1.Selection Switch Model

2.Drawing Design

3.Mold Fabrication

4.Sealed Microswitch Assembly

Commitment To Exceptional
Innovation & Quality