UnionwellProfessional waterproof micro Limit switch manufacturer

Unionwell is a pioneering waterproof micro switches company in China, specializing early in sealed switch development and manufacturing.With more than 20 years of R&D and manufacturing experience in waterproof micro switches. We focus on providing high-performance waterproof micro limit switch solutions for industrial equipment, home appliances and automotive systems.

All Unionwell waterproof micro switches meet IP67 waterproof performance and are of guaranteed quality. Self-developed molds and automated production lines reduce production costs and can give you the lowest ex-factory price. Provide the most perfect waterproof micro limit switch solution for your equipment.

Waterproof Micro Limit Switch Factory Price

Unveiling the secrets of the Unionwell automatic production line that produces 300 million switches per year.

UNIONWELL

waterproof limit micro switch type

Unionwell has a variety of waterproof limit micro switch types, including the G6 miniature micro switch for home appliances, the subminiature G9A waterproof switch, and the G11 DPDT waterproof and dustproof micro switch for industrial equipment.Welcome to click here to view more waterproof micro switches or similar sealed switches.

Unionwell’s waterproof micro limit switch is engineered for demanding environments, operating reliably from -40°C to +85°C and up to 85%RH humidity. With an IP67-rated sealed structure, it ensures superior resistance to water, dust, and harsh conditions. Designed to handle high current loads, this switch meets international standards including ENEC, UL, cUL, ISO, and IATF16949, making it ideal for industrial machinery, automotive systems, and outdoor equipment.Click the link to view more Unionwell micro switches.

Sealed Subminiature Micro Switch With Inner Res...

Waterproof and Dustproof Sealed Basic Micro Swi...

Customized Designs Miniature Micro Switch G6

Waterproof and Dustproof Sealed Miniature Micro...

Subminiature Seal Micro Switch G10B

Waterproof and Dustproof DPDT Limit Micro Switc...

Waterproof Swing Rotary Switch G16

Waterproof Seat Sealed Adjustment Switch G19

Motor Electronic Lock for Charging G23

Waterproof Micro Limit Switch Structurer

●Housing:IP67 sealed housing, waterproof, dustproof, oilproof, protecting internal parts.

●Terminals: Multiple terminal options, including PCB, solder terminals and wiring terminals.

●Rod: Available in multiple forms (roller, long rod, short rod) for precise and flexible operation.

●Contacts: Highly conductive silver alloy contacts, supporting up to 10A high current, and certified by ENEC, UL and IATF16949.

Waterproof Micro Limit Switch Structurer

Waterproof Limit Micro Switch Parameter

The following parameter table selects common waterproof micro switches. For parameter tables of other waterproof micro switches, please contact Unionwell!

Model	IP Level	Rating Voltage	Mechanical Life	Operating Temperature	Operating Force	Technical Documents
G3 Sealed Subminiature Micro Switch	IP67	125/250VAC	500,000 cycles	-40℃ ~ +85℃	100~250gf	View Datasheet PDF
G5W11 Waterproof Micro Switch	IP67	125/250VAC / 48VDC	50,000 cycles	-40℃ ~ +85℃	50~240gf	View Datasheet PDF
G9A Sealed Miniature Micro Switch	IP40 / IP67	125/250VAC	200,000 cycles	-40℃ ~ +85℃	150/200gf	View Datasheet PDF
G10B Charging Gun Micro Switch	IP65 / IP67	250VAC / 30VDC	100,000 cycles	-40℃ ~ +85℃	50~150gf	View Datasheet PDF
G11 DPDT Limit Micro Switch	IP67	125VAC	50,000 cycles	-25℃ ~ +85℃	200~450gf	View Datasheet PDF
G16 (Custom Industrial Series)	IP67	250VAC	100,000 cycles	-40℃ ~ +85℃	200gf	View Datasheet PDF
G19 Waterproof Seat Adjustment Switch	IP67	12 / 14 VDC	50,000 cycles	-40℃ ~ +85℃	See Datasheet	View Datasheet PDF
G23 Motor Electronic Lock Switch	IP67	12VDC	600,000 cycles	-40℃ ~ +85℃	250g.cm(Min)	View Datasheet PDF

Application of waterproof micro limit switch in door control emergency valve

The waterproof micro limit switch is widely used, and the most famous one is the emergency control system of the automotive safety valve. Under normal conditions, the cam presses on the normally closed waterproof micro switch contacts to keep the door cylinder solenoid valve de-energized. However, when an emergency occurs, the air pipe is damaged and the door cannot be opened.

Once an emergency occurs, the passenger turns the external knob, and the cam moves to close the internal normally open waterproof micro switch, sending an alarm signal, while releasing the normally closed contact, connecting the solenoid valve coil, and exhausting the air quickly. At this time, the door can be easily opened by hand to achieve emergency escape in the car.

In fact, there are many applications of micro switches in the automotive field, including car door lock switches, automotive seat adjustment switches, and seat belt reminder switches. Welcome to click to learn more about automotive micro switches and waterproof micro switches.

Get A Free Waterproof Micro Limit Switch Now

A short video showing you the production process of the Unionwell G6 waterproof micro limit switch!

Features of waterproof micro limit switch

In demanding applications such as automotive safety, smart home appliances or industrial control, stable and reliable sealed switches are essential. Unionwell's waterproof micro limit switch has excellent protection performance, international certification guarantee and long life design, and is designed for demanding environments.

IP67 protection level: waterproof and dustproof design, suitable for harsh environments such as humid, dusty, and outdoor
Authoritative safety certification: passed UL, cUL, ISO and other international certifications, in line with global market access standards.
Multiple terminal and operating handle options: flexible adaptation to different installation structures and circuit requirements.
Long life and high reliability: excellent mechanical life and electrical performance, support high-frequency action.

Contact for Waterproof Limit Micro Switch

G9A Waterproof Limit Switch Drawing

How to select waterproof limit switch for the automotive industry

For automotive OEMs and Tier‑1 assembly plants, selecting a waterproof micro limit switch is not just about IP rating — it’s about ensuring long-term reliability, precise actuation, and seamless integration in automated systems. Take the G304A sealed clip-type subminiature micro switch as a benchmark: it features IP67 protection, operates reliably from -40℃ to +85℃, supports up to 125/250VAC, and withstands 300,000+ mechanical cycles, making it ideal for door mechanisms, actuator controls, and safety interlocks in vehicles or industrial equipment.

Selection Steps:

1.Protection Rating: For applications susceptible to dust, moisture, or washing environments, select switches with an IP67+ rating.

2.Voltage and Current Ratings: Ensure compatibility with your control circuitry.

3.Mechanical Life and Durability: Verify that the mechanical life meets the product's budget ratings.

4.Operating Temperature Range: Confirm suitability for engine compartment, external module, or factory environments.

5.Dimensions and Actuation Type: Check the mounting dimensions and lever style for integration into compact components.

6.Certifications and Quality: Prioritize switches compliant with IATF16949 / ISO9001 / UL standards to meet Tier 1 supplier requirements.

Complete G304 Technical Documentation(PDF)

HonorOUR Certification

2024: Won the ISO5001

2024: Won the Ecovadis

2023: Won the ISO14001

2023: Won the Specialized and New Certificate

2022: Won the Provincial Engineering Center Enterprise

2022: Won the UL Witness Laboratory

2016: Won the IATF16949

2016: Won the ISO45001

2015: Won the ISO9001

2014: High-tech Enterprise Certificate

why choose Unionwell

Unionwell is a professional micro switch manufacturer in Huizhou, Guangdong with 30 years of manufacturing experience, specializing in the production of waterproof micro switches, automotive micro switches and other types of micro switches. It covers an area of more than 65,000 square meters, has obtained CE certification from many countries around the world, introduced advanced equipment in the industry, and has a professional R&D team!

1

Quality Certification

We have formed a complete quality management system and have passed ISO9001, IATF16949, ISO14001 certifications, with high-quality and reliable performance!
2

Efficient Production Capacity

Unionwell has introduced advanced automated production technology in the industry, with an annual production capacity of more than 250 million switches, including more than 4 million waterproof automotive switches.
3

Complete product range

Unionwell offers a complete product range covering waterproof, dustproof, ultra-miniature, and high-precision micro switches, ensuring fast adaptation to diverse applications across automotive, home appliances, and industrial automation.
3

Super competitive price

Unionwell provides super competitive pricing backed by in-house tooling and automated production, helping you reduce costs while maintaining high quality and reliable supply for large-volume projects.

How-Logistics-Company-Works-980px-x-552px

FAQ

What makes the micro limit switch waterproof?

Waterproof micro limit switches are protected by sealed housings, with a common protection level of IP67 and above. Its sealing structure usually includes a molded housing, a rubber seal or epoxy resin potting at the terminal, which effectively prevents moisture, dust and other contaminants from entering the interior.

What customization options does Unionwell provide?

Unionwell can provide a number of customized services such as housing material, actuator type, terminal form, protection level, lead wire material, action force, etc., and support OEM/ODM development projects, including mold opening and rapid prototyping.

What is the mechanical and electrical lifespan of your waterproof limit switches under load?

Our waterproof micro limit switches are engineered for high durability, offering up to 1,000,000 mechanical cycles and over 100,000 electrical operations under rated load conditions (typically 5A at 250VAC). This makes them ideal for high-frequency switching environments such as automotive modules, industrial machinery, and safety systems.

Do you offer OEM/ODM service for waterproof micro limit switches with specific mounting dimensions?

Absolutely. With a dedicated R&D team and in-house tooling capabilities, Unionwell provides OEM/ODM support including custom housing design, bracket configuration, and customer-branded labeling. We’ve worked with global manufacturers to adapt switch dimensions for direct fit into tight or legacy installations.Absolutely. With a dedicated R&D team and in-house tooling capabilities, Unionwell provides OEM/ODM support including custom housing design, bracket configuration, and customer-branded labeling. We’ve worked with global manufacturers to adapt switch dimensions for direct fit into tight or legacy installations.

What are the typical applications of your waterproof micro limit switches in automotive or industrial environments?

Unionwell’s waterproof micro limit switches are widely used in automotive door locks, sunroofs, power tailgates, HVAC actuators, and emergency valve control systems. In industrial equipment, they support position detection in conveyor systems, safety covers, and outdoor control panels, where high sealing performance and reliability are critical.

Are there any application cases or engineering usage suggestions?

Yes. Unionwell's waterproof micro limit switches are widely used in car door locks, AGV handling robots, industrial automation equipment and outdoor machinery. It is recommended to choose products with enhanced sealing performance in high humidity or water washing environments, and verify the actual working conditions before mass application.

SEND YOUR INQUIRY DIRECTLY TO US