UnionwellAutomotive Micro Switch Manufacturer | IP67 Certified - Unionwell

Unionwell automotive micro switches product categories
Our Automotive Micro Switch Product LinesClick the card below to learn more about other types of automotive micro switches.
Unionwell Micro Switch Types
Case: Automotive Door Handle Micro Switch
Unionwell automotive micro switches for door lock systems are compatible with 200+ vehicle models and available with multiple terminal and lever options. Supported by reliable performance and long service life, they have been used in 300+ automotive projects, helping customers reduce field failure rates by up to 40% through optimized switch reliability.
- IP67 switches are waterproof and dustproof, suitable for various harsh environments
- Provide accurate and fast response, reduce the response time of the car door and improve the user experience.
- With a variety of terminal options to meet different wiring needs, it provides flexibility for various vehicle applications.
- Good durability, mechanical life of more than 500,000 times, no need to frequently replace sealed automotive micro switches
Application of G3 micro switch in sun visor
G3 series micro switches (G304A model) are widely used in car sun visors, mainly used to control the switch of the built-in makeup mirror light in the sun visor. When the driver or passenger opens the sun visor or the mirror cover, the micro switch is triggered and the mirror light is automatically lit; when the mirror cover is closed, the light goes out, realizing intelligent lighting control.
This series of switches is small in size, easy to embed into the internal structure of the sun visor, and has IP67 waterproof and IP40 dustproof performance, ensuring long-term stable operation in the complex environment inside the car. In addition, the G3 series micro switches support a variety of installation methods and terminal options to meet different car models and design requirements.
Micro switch application in car door lock
G303 series micro switches are widely used in automobile door lock systems to accurately identify the closed state of the door. When the door lock mechanism completes the locking action, the micro switch is triggered synchronously and feedbacks the locking signal to the body control module (BCM), realizing functions such as door lock status monitoring, anti-theft system linkage, and headlight response.
This model has cooperated with many brand automobile suppliers, has rich project experience, and is suitable for various models. Its IP67-level sealing performance can effectively resist rain, dust and oil interference, ensuring long-term stable operation.
Other automotive micro switch applications
Applications
EV Charging Micro Switch
Automotive Door Lock System
Automotive Safety System

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High Durability & Long Life Cycle
-Our automotive microswitches offer exceptional durability, with lifespan varying by model. Common waterproof models, operating at 10A 250VAC, offer a mechanical life of 500,000 cycles and an electrical life of 100,000 cycles, ensuring long-term reliable operation in harsh automotive environments. -

Waterproof & Dustproof
-We offer automotive microswitches with IP40 and IP67 protection ratings to meet diverse operating environment requirements. IP40 is suitable for general automotive applications, while IP67 is designed for harsh environments such as electric vehicle charging systems and external safety, ensuring reliable operation even in humid, dusty, and contaminant conditions. -

Customizable Actuator & Lever
-Our automotive microswitches offer linear, roller, slide, and push-button configurations, supporting operating forces of 0.5–10N, actuator lengths of 5–50mm, and customizable PCB, solder, or quick-connect terminals, providing flexible solutions for door locks, seat adjustments, trunk lids, and other automotive systems. -

Certifications
- All our automotive microswitches are UL, cUL, CE, ENEC, RoHS, and REACH certified, and manufactured under an IATF 16949 certified quality management system, ensuring reliable product quality and compliance with global automotive market standards.
Why Choose Unionwell for Automotive Micro Switch
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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
Customized Service
Unionwell has many R&D engineers with 20 years of work experience, and has many years of experience in OEM and customized micro switches, which can meet your various project needs. -
4
Source Factory
As a leading Chinese manufacturer, Unionwell manufactures and ships automotive switches directly from the factory, eliminating intermediaries, offering more competitive pricing, and facilitating communication and coordination.
FAQ
What is the lead time and MOQ for bulk purchase of automotive micro switches?
The delivery cycle for standard models is 2~3 weeks; the delivery cycle for customized models depends on the complexity of the process, generally 4~6 weeks. We support small and medium-sized batch purchases, and the minimum order quantity (MOQ) is generally 2000~3000 pieces, which can be negotiated and determined according to the product model and cooperation situation.
How to choose the right automotive micro switch for door lock?
When selecting a micro switch for automotive door locks, key considerations include lifespan, sensitivity, and environmental adaptability. The G303 sealed micro switch is ideal for door lock applications. Its high reliability and long lifespan, combined with its stability under vibration and temperature fluctuations, make it the optimal solution for door lock systems.
What is the temperature resistance level of the G5W11 automotive switches?
The temperature resistance of the G5W11 automotive switches is - 40℃ to + 85℃.
What kind of wires can be installed in the G5W11 automotive switches?
The G5W11 automotive switches is usually equipped with UL1015 and UL1007 wires. Other wires can also be equipped, as long as they are not too thick.
How do we distinguish the 187 and 250 terminals of our G5 series automotive switches?
Mainly distinguished by the width of the terminal, the width of the 187 terminal is 4.8MM, and the thickness of the 250 terminal is 6.3MM
What certifications have your automotive micro switches passed? What automotive industry standards do they meet?
Our automotive micro switches are certified by IATF 16949, ISO 9001, RoHS and REACH. Some of our products also comply with ISO9001 standards. They can meet the requirements of automotive-grade electrical performance, environmental reliability and mechanical life, and are suitable for OEMs and Tier 1 supply chain systems.
Are you a manufacturer or an agent? Do you have any agents? Where are they located?
We are a Unionwell micro switch manufacturer. Our micro switches are all independently developed, produced and sold. We currently have multiple agents, all of which are located throughout China, and no foreign agents.
Can you provide technical drawings or datasheets?
Of course. Due to the large number of product types, we will provide a simple selection manual, and then provide specific model automotive micro switch drawings or 3D drawings.
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