UnionwellIP67 Waterproof Micro Switches | Unionwell — China Leading Manufacturer

Unionwell is a leading professional manufacturer of IP67/IP68 waterproof micro switches in China. With over 20 years of industry experience, we supply high-reliability sealed micro switches to global automotive Tier-1/Tier-2 suppliers and industrial equipment manufacturers. Our switches deliver 100,000+ electrical cycles, operate reliably from -40°C to 85°C, and pass strict IP67 immersion tests (1 meter, 30 minutes).

Our waterproof micro switches are widely deployed in automotive systems (door locks, seat adjusters, charging ports), industrial automation equipment, and home appliances. We have long-term partnerships with over 50+ automotive Tier-1/Tier-2 suppliers worldwide, delivering millions of switches annually with consistent quality and on-time delivery.

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This video shows you the application of Unionwell's G9 waterproof Mini Micro Switch in charging gun!

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Superior Durability: Unionwell's Waterproof Micro Switches

Unionwell specializes in providing large quantities of waterproof micro switches. In order to cope with various applications, there are various types of micro switches, which are widely used in automotive micro switches, industrial applications, household appliances and other scenarios. All switch types meet the IP67 waterproof rating and can withstand the test of working at 1 meter underwater for 30 minutes.

These switches are perfect for applications where moisture resistance and durability are critical. Our extensive range of waterproof micro switches guarantees compatibility with various systems, ensuring ease of installation and integration. Trust Unionwell for advanced technology and exceptional craftsmanship, delivering superior performance and safety in all your industrial applications.Click the link to view more micro switches from Unionwell

Series Models	Terminal Type	IP Level	Handle Type	Application
G3 Series	PCB / Soldering / With Wires	IP67	Without / Straight / Roller	Car door lock / Car sun visor / Hood lock / Charging port detection
G5W11 Series	Quick Connector / With Wires	IP67	Without / Straight / Roller	Washing machines / Dishwashers / Refrigerator
G9 Series	Soldering / PCB / Quick Connector / With Wire	IP40 / IP67	Pin Plunger / Straight Handle / Roller	Car door locks / Car ignition switch / Pickup truck transmission control system
G10B Series	PCB / Soldering / With Wires	IP67	Pin Plunger / Straight Handle / Slide	Charging gun / Charging port cover
G11 Series	Bottom Line	IP67	Pin Plunger / Straight Handle / Slide	Industrial equipment / Valve control / Automation control
G16 Series	PCB / Vertical soldering terminals	IP67	Swing Arm	Automotive
G19 Series	Operating direction: 2-way / 4-way	IP5X / IP67	Operating lever height: 21.6mm / 22mm / 25.6mm	Car seat adjustment
G23 Series	Without cable / 300mm with cable / 500mm with cable	IP67	Unlock type: None / "-" type base unlock / "+" type base unlock	Car charging dock / DC charging gun motor lock

IP67 sealed subminiature micro switch G304 series for automotive

G3

IP Rate:IP67
Op.Temp.:-40℃~+85℃
Rating:0.1A,125/250VAC; 3A/12VDC; 0.1A/48VDC; μ1E5
Elec.Life:Min.100,000 cycles

G5W11

IP Rate: IP67
Op.Temp.:-40℃~+85℃
Rating(W1):ENEC: 0.1A 48VDC, 0.1A 125/250VAC,40T85 μ 5E4;
UL: 0.1A 48VDC ,0.1A 125/250VAC, T85
Elec.Life:2E4~10E4 cycles

Waterproof push button micro switch IP67 G9A series industrial

G9

IP Rate:IP40/IP67
Op.Temp.:-40℃~+85℃
Rating:0.1A 125/250VAC, 0.1A 30VDC
Elec.Life:50,000 cycles

G10B

IP Rate:IP65/IP67
Op.Temp.:-40℃~+85℃
Rating:0.1A 125/250VAC 30VDC
Elec.Life:10,000 cycles

Waterproof and dustproof IP67 limit switch G11 for industrial equipment

G11

IP Rate:IP67
Op.Temp.:-25℃~+85℃
Rating:0.5A 250VDC
0.5A/5A 250VAC
Elec.Life:50,000 cycles

Waterproof Swing Rotary Switch G16 for Automotive Applications

G16

IP Rate:IP67
Op.Temp.:-40℃~+85℃
Rating:0.1A 12VDC
Elec.Life:100.000 cycles

G19 Automotive-Grade Sealed Switch for Car Seat Adjustment

G19

IP Rate:IP67
Op.Temp.:-40℃~+85℃
Rating:15A 14VDC/8A 12VDC
Elec.Life:30.000 cycles

IP67 waterproof self-locking switch G23 for motor-locked & charging guns

G23A

IP Rate:IP67
Op.Temp.:-40℃~+85℃
Rating:12VDC
Elec.Life:60,000 cycles

Our project casesApplications of Waterproof Micro Switches

Automotive waterproof micro switch applications door lock seat charger

Automotive Application

• Door Lock System: The G304E series handle-less IP67 micro switch is installed on the side door lock to detect the door lock status and promptly send signals to the system.

• Seat Adjustment System: The G19 series dedicated seat adjustment switch features multi-directional operation and adjustable lever height, perfectly compatible with various car brands in the market, providing precise operation.

• Charging Gun/Charging Port Cover: The G10B series ultra-compact sealed switch is widely used in the trigger system of new energy charging guns and car charging port covers, with IP67 protection suitable for harsh outdoor environments.

• Automatic Transmission Control System: The G9 series wired waterproof micro switch is practically applied in pickup truck automatic transmission control systems, responsible for detecting and transmitting transmission system signals.

Home Appliance Application

• Washing Machine/Dishwasher: Waterproof micro switches are used for door lid status detection and water level control, operating reliably in humid and high-moisture environments.

• Refrigerator Lighting Control: The G5W11 waterproof micro switch is commonly used to control the refrigerator compartment light switch, responsible for controlling the interior lighting of the refrigerator, and must adapt to low-temperature and humid working conditions.

• Robotic Vacuum Cleaner: The G9 ultra-miniature micro switch is used in the steering control system, collision detection, and cliff detection of robotic vacuum cleaners. Its low-power design extends battery life.

Industrial Equipment & Outdoor Applications

• Industrial Automation: The G11 waterproof and dustproof IP67 switch is used for assembly line position detection and limit control, suitable for factory environments with high dust and oil.

• Outdoor Equipment: The G91 IP40 dustproof micro switch is applied in lawn mower control systems and outdoor lighting control, ensuring that the internal components of the switch are protected from dust, providing stability and reliability.

Waterproof Micro Switch Features & Advantages

01

IP67/IP68 High Protection Rating

Tested to IEC 60529 standard, immersion in 1 meter of water for 30 minutes without water ingress; some models reach IP68. Double-sealed structure design (sealing ring + potting process) ensures consistent sealing performance over long-term use.
02

Ultra-Long Service Life

Electrical life over 100,000 cycles, mechanical life over 500,000 cycles. Silver alloy contacts + precision spring design ensures stable performance after millions of operations.
03

Wide Operating Temperature Range

Standard models operate from -40°C to +85°C; custom-designed models can operate from -40°C to +125°C, adapting to various extreme environments from extremely cold to extremely hot.
04

Internationally Recognized Certifications

UL, CUL, CQC, ENEC, RoHS, and other international certifications; IATF 16949 automotive quality management system certification; products meet global market access requirements.
05

Flexible Customization Capabilities

Supports customization in multiple dimensions, including voltage parameters, terminal types, protection levels, and operating handle types. A team of engineers with over 30 years of experience provides full support from design to mass production.
06

Stable Delivery Capabilities

Automated production workshops produce over 100,000 units daily, with a standard lead time of 2 weeks. In-stock models can be shipped the same day. 100% full inspection + random sampling dual quality control ensures batch consistency.

Waterproof Micro Switch vs. Dustproof Micro Switch

IP67 Waterproof Micro Switch — Full Dust Protection & Immersion Resistant

IP67 is a higher level of protection level standard issued by the International Electrotechnical Commission (IEC), which means that the equipment has strong dust and water resistance. This standard is suitable for electronic products and industrial equipment with strict requirements for harsh environments.

●Dust resistance (first digit "6")

The number 6 means "completely dustproof". This means that the device completely prevents dust particles from entering the body under standard test conditions and will not cause any damage to internal components. It is the highest level of solid protection.

● Water resistance (second digit "7")

The number 7 means "can withstand short-term immersion in water". The device can be immersed in clear water at a depth of 1 meter for up to 30 minutes without water ingress or failure. This level of waterproof performance is suitable for a variety of outdoor, humid or temporary immersion environments.

All Unionwell IP67 micro switches are 100% waterproof tested before shipping to make sure every switch meets the strict IP67 sealing standard.

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IP40 dustproof micro switch protection level comparison

IP40 Micro Switch

An IP40 switch is also called a dust-proof switch. IP40 means it prevents small particles from getting in but is not waterproof, mainly used in dusty but dry work environments. The meaning of the numbers is shown in the image on the right:

● Dust resistance (first digit "4")

The number 4 means that the device can prevent solid foreign objects (such as small tools, metal wires, etc.) with a diameter greater than or equal to 1.0 mm from entering the device. This means that it can basically withstand most human hand touches or larger foreign objects, but dust and fine particles can still enter.

● Waterproof capability (second number "0")

The number 0 means that the device has no waterproof protection. Once exposed to water drops, splashes or high humidity, the device may malfunction or be damaged.

View More IP40 Switch Check out our waterproof limit switch→

Upgrade from IP40 to IP67?

Waterproof micro switch grade

The protection level of a waterproof micro switch is typically expressed using an IP rating, with IP40, IP65, and IP67 being the most common. The IP rating consists of two numbers: the first (0-6) represents protection against solid objects, and the second (0-8) represents protection against water. The higher the number, the better the protection.

IP40

IP40 is a dustproof micro switch, offering protection against solid objects larger than 1 mm and most dust intrusion, but lacking water resistance，and it is mostly used in industrial switches.

IP65

IP65 is a dustproof and water-jet-proof microswitch, offering complete dustproof protection and effective protection against low-pressure water jets from any direction. It is commonly used in charging button connectors in the new energy sector.

IP67

IP67 is a highly sealed, waterproof, and dustproof microswitch, offering excellent sealing performance and the ability to maintain normal operation even in short-term submersion in water. It is suitable for applications such as outdoor equipment and the automotive sector.

Waterproof Micro Switch Testing & Certification Standards Explained

IP67 waterproof micro switch testing follows the IEC 60529 international standard, which specifies two key test procedures:

The IP67 waterproof test is relatively strict. The internationally recognized test standard is that the switch must undergo a fine dust intrusion test in a dustproof room for 8 hours , and then be completely immersed in clean water at a standard depth. If it can work stably for half an hour, it is considered to meet the standard. For detailed test specifications, please refer to the IEC official standard interpretation. Nowadays, it has been simplified to work at a depth of 15 cm underwater for half an hour to meet the IP67 test standard.

Unionwell's sealed micro switches and waterproof micro switches are fully inspected or sampled according to the IP67 process, and have successfully passed high-pressure flushing, hot and cold cycles and dustproof tests. We can provide additional tests and reports according to customer needs.

The switches have obtained multiple certifications such as ISO, IATF9001, UL, CE, RoHS, etc., comply with global electrical safety and environmental protection standards, and support exports to Europe, America and Southeast Asia markets.

Customized Waterproof Micro Switches

IP67 waterproof micro switch immersion testing per IEC 60529 standard

Waterproof micro switch structure

Unionwell waterproof micro switches feature a precision-engineered 5-layer sealing structure that ensures reliable IP67 protection while maintaining excellent electrical performance. Each component is carefully designed and tested:

① Actuator Lever

Available in multiple styles (straight lever, roller lever, plunger) for different application requirements, made from high-strength engineering plastic.
② Sealed Button

With integrated silicone rubber sealing ring, blocks water vapor and dust while maintaining precise tactile feedback.
③ Waterproof Housing

Durable PBT casing with a bottom sealed using a potting process, providing structural integrity and environmental protection.
④ Metal Contact Assembly

Silver alloy contacts with snap-action mechanism, ensuring fast make/break action and long electrical life.
⑤ Terminal

Provides PCB through-holes, soldering, and multi-directional wire configurations, with epoxy encapsulation at the bottom for complete sealing.

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Waterproof micro switch internal structure diagram showing 5 key components

Customized solutions for waterproof micro switches

Unionwell provides customized solutions for waterproof micro switches. We have many engineers with more than 30 years of R&D experience and many years of OEM/ODM design and production mode. We can easily solve all your project needs and produce compatible, stable and affordable automotive micro switches for your car.

Customizable voltage parameters
Customizable terminal types
Customizable protection level, IP40/IP67/IP68
Customizable lever type, straight lever/roller lever/plunger type

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

Customized Waterproof Micro Switches

Customized solutions for automotive micro switches

The Evolution of Waterproof Micro Switches in the Automotive Industry

With the rise of smart cars, electric cars and high-end assisted driving systems, the application scenarios of micro switches in automobiles are constantly expanding, which puts forward higher requirements for switch performance. Traditional micro switches are difficult to meet the stringent requirements of waterproof, dustproof, high and low temperature resistance in key parts such as engine compartment, chassis, door locks and charging ports. To meet this challenge, automotive micro switches mostly use IP67 waterproof micro switches.

Unionwell waterproof micro switches are used in all aspects of automobiles, such as G19 seat adjustment micro switches, G20 seat belt reminder switches, G3 door switches, etc. They are also used in modules such as solar panels, window controls and shifters. Unionwell has a wealth of application cases for waterproof micro switches for automotive applications.

Contact for Automotive Waterproof Micro Switch

Let's walk into the world of Unionwell micro switches

FAQs About Waterproof Micro Switches

What is the minimum order quantity for waterproof micro switches?

The standard MOQ for Unionwell waterproof micro switches is 1,000 pieces for standard models, which can be adjusted based on product specifications. Free samples (5-10 pieces) are available for existing models for testing and evaluation purposes. Contact our sales team for the latest pricing and sample availability.

What wiring options are available?

We provide a variety of wiring options, including welding terminals, lead wires, and various PCB terminal types to suit different equipment structures and installation methods. You can choose the most suitable wiring option based on your actual application.

What is the lifespan of an IP67 waterproof micro switch?

The electrical lifespan of Unionwell waterproof micro switches is typically 100,000 cycles, and mechanical lifespan is 500,000 cycles for standard models like the G3 sealed subminiature series. Lifespan varies by model — customized long-life versions are available upon request. The actual service life depends on operating conditions such as load current, temperature, and switching frequency.

Is the G91 series a low-profile version of the G9 waterproof series that is not waterproof?

These are two different micro switch series. Although the basic appearance and current type are similar, but the G91 is dustproof and the G9 is waterproof. The handles are not shared! The maximum current of the G9 is 5A, and the G91 can reach 10A.

What is the operating temperature range for waterproof micro switches?

Standard waterproof micro switches from Unionwell operate reliably within a temperature range of -40°C to +85°C. Special high-temperature models can withstand up to +125°C for extreme environment applications. All switches are tested for temperature cycling to ensure performance stability across the full operating range.

Where are your waterproof micro switches mostly used?

Unionwell's waterproof micro switches can be used in various fields, among which the most common ones are automobile assembly plants. For example, the G3 series subminiature sealed switches have been supplied to automobile manufacturers for a long time, and the G10B series of waterproof micro switches are a switch that is perfectly adapted to charging gun control.

Is this waterproof micro switch compatible with my car brand?

Unionwell's waterproof micro switches are primarily used in the automotive field. We have partnered with multiple brands and are compatible with a wide range of car brands.

What are the advantages of Unionwell's waterproof micro switches?

Our products have obtained international certifications such as UL, CUL, CQC, and ENEC. They offer long life and high reliability, and are widely used in automobiles, home appliances, and industrial equipment, with stable and reliable performance.

What are the advantages of using a potting process?

The potting process of the sealed waterproof micro switch ensures excellent IP67 protection, effectively preventing water and dust. It can withstand harsh operating environments such as high humidity, vibration, and temperature fluctuations, ensuring long-term stable operation.

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