Sealed Micro Switch
Hermetically Sealed Micro Switch
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Waterproof Limit Micro Switch
Waterproof Micro ON/OFF Switch
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Limit Micro Switch
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SPDT Subminiature Micro Switch
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SPDT Rocker Micro Switch
Tact Micro Switch
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Hermetically Sealed Limit Switch with OEM Customization for Industrial
Features
The Hermetically Sealed Limit Switch is
designed with precision engineering, featuring a robust switching mechanism for accurate and
reliable performance. Its adaptable design supports multiple mounting options and operation types,
ensuring flexibility for diverse applications. With outstanding hermetic sealing, this switch
delivers consistent and dependable performance in harsh environments, making it a top choice for industrial and outdoor use.
Application
Dimensions
Who is Unionwell
Huizhou Unionwell Sensing & Control Electronics Co., Ltd. is a electronics micro switch manufacturer, specializing in sensing and control core components. Established as an SRDI (Specialized, Refined, Differential, Innovation) "High-New Technology" enterprise, Unionwell is dedicated to research, production, and sales of a wide range of high-quality electronic components.Some of the key products offered by the company include:.Micro Switches,Air Pressure Switches,Mechanical Keyboard Switches,Door Switches ect.Unionwell has a strong global presence, with sales branches and distribution networks spanning across North America, Europe, Asia, the Middle East, and South America.
Contact us1993
Years
Ever Since
80
million
Registered Capital (CNY)
70000
m2
Area Covered
300
million
Annual Capacity (PCS)
Hermetically Sealed Limit Switch Manufacturer & OEM Supplier in China
Unionwell is a leading OEM manufacturer of hermetically sealed micro switches in China, trusted by customers worldwide for over 20 years. We specialize in providing durable, high-performance switch solutions designed for applications such as electric vehicle systems, new energy, and industrial automation. From selection to sampling and production, we provide one-on-one professional service to ensure high-quality, reliable micro switches!
Key Features of Our Hermetically Sealed Limit Switches
●IP67 protection: Effectively protects against dust and moisture.
●Operates in extreme temperatures from -45°C to +85°C.
●SPDT microswitch circuit type allows for flexible function switching.
●Long-life design meets the reliability requirements of high-frequency applications.
●Featuring a snap-action mechanism, it responds quickly and reliably.
●Complies with multiple certification standards, including UL, cUL, ENEC, ISO, and IATF16949.
Hermetically Sealed Limit Switch Parameter | G3 Series
The parameters in the table below are based on the G3 series Hermetically Sealed micro Switch as an example. For parameters of other models, please refer to the following technical documents
| Parameter | Specification |
|---|---|
| Model | G303R-130E00B48-FA200-TA404 |
| Rated Current/Voltage | 0.1 A @ 125/250 VAC; 3 A @ 12 VDC; 0.1 A @ 48 VDC |
| Electrical Frequency | 0.1 A: 120 cycles/min; 3 A: 10–30 cycles/min |
| Mechanical Frequency | 120 cycles/min |
| Contact Resistance | ≤ 100 mΩ (initial, without wire) |
| Insulation Resistance | ≥ 100 MΩ @ 500 VDC |
| Dielectric Strength | 500 VAC (50–60 Hz) |
| Vibration Resistance | 10–55 Hz, amplitude 0.75 mm (double amplitude) |
| Operating Temperature | –40 ℃ to +85 ℃ |
| Operating Humidity | Up to 85% RH |
| Electrical Life | ≥ 100,000 cycles (depending on load) |
| Mechanical Life | ≥ 500,000 cycles |
| Structure | With built-in resistor, sealed design |
| Protection Rating | IP67 (waterproof and dustproof) |
| Certifications | ISO9001, IATF16949, ISO14001 |
Why must these industries choose airtight limit switches?
Automotive Industry
In systems such as power tailgates, door locks, and seat adjustments, micro switches are exposed to rain, mud, sand, and extreme temperature fluctuations for extended periods. Hermetic limit switches offer excellent water and dust resistance and mechanical durability, effectively ensuring reliable signal transmission and the lifespan of the vehicle.
Industrial Automation
Industrial control cabinets, enclosed sensor units, and motion control mechanisms require extremely high sealing requirements for switches. Hermetic limit switches prevent the intrusion of moisture, dust, and corrosive gases into the internal structure, preventing contact oxidation and control failure. They are particularly suitable for complex operating conditions such as high humidity and high dust levels.
New Energy Industry
In key new energy applications, such as charging plugs and connector locking mechanisms, switches must frequently switch on and off and withstand arcing shocks. Hermetic limit switches are not only waterproof but also offer excellent insulation and arc resistance, effectively improving system stability and charging safety.
Why must these industries choose airtight limit switches?
Automotive Industry
In systems such as power tailgates, door locks, and seat adjustments, micro switches are exposed to rain, mud, sand, and extreme temperature fluctuations for extended periods. Hermetic limit switches offer excellent water and dust resistance and mechanical durability, effectively ensuring reliable signal transmission and the lifespan of the vehicle.
Industrial Automation
Industrial control cabinets, enclosed sensor units, and motion control mechanisms require extremely high sealing requirements for switches. Hermetic limit switches prevent the intrusion of moisture, dust, and corrosive gases into the internal structure, preventing contact oxidation and control failure. They are particularly suitable for complex operating conditions such as high humidity and high dust levels.
New Energy Industry
In key new energy applications, such as charging plugs and connector locking mechanisms, switches must frequently switch on and off and withstand arcing shocks. Hermetic limit switches are not only waterproof but also offer excellent insulation and arc resistance, effectively improving system stability and charging safety.
Why must these industries choose airtight limit switches?
Automotive Industry
In systems such as power tailgates, door locks, and seat adjustments, micro switches are exposed to rain, mud, sand, and extreme temperature fluctuations for extended periods. Hermetic limit switches offer excellent water and dust resistance and mechanical durability, effectively ensuring reliable signal transmission and the lifespan of the vehicle.
Industrial Automation
Industrial control cabinets, enclosed sensor units, and motion control mechanisms require extremely high sealing requirements for switches. Hermetic limit switches prevent the intrusion of moisture, dust, and corrosive gases into the internal structure, preventing contact oxidation and control failure. They are particularly suitable for complex operating conditions such as high humidity and high dust levels.
New Energy Industry
In key new energy applications, such as charging plugs and connector locking mechanisms, switches must frequently switch on and off and withstand arcing shocks. Hermetic limit switches are not only waterproof but also offer excellent insulation and arc resistance, effectively improving system stability and charging safety.
Why Choose Unionwell
When you need a sealed limit switch that operates reliably in harsh environments, Unionwell is your trusted choice. We've specialized in airtight and waterproof micro switches for over 20 years and have provided long-term, reliable supply to leading customers such as BYD and CATL. Whether it's new energy vehicles, energy storage systems, or industrial automation, we can quickly provide customized solutions tailored to your application. Our own factories, automated production lines, and strict quality control ensure that every batch of products is delivered on time and with consistent quality. Unionwell is more than just a switch manufacturer; it's the technical foundation for your project's success.
Hermetically Sealed Limit Switch Parameter | G3 Series
The parameters in the table below are based on the G3 series Hermetically Sealed micro Switch as an example. For parameters of other models, please refer to the following technical documents
| Parameter | Specification |
|---|---|
| Model | G303R-130E00B48-FA200-TA404 |
| Rated Current/Voltage | 0.1 A @ 125/250 VAC; 3 A @ 12 VDC; 0.1 A @ 48 VDC |
| Electrical Frequency | 0.1 A: 120 cycles/min; 3 A: 10–30 cycles/min |
| Mechanical Frequency | 120 cycles/min |
| Contact Resistance | ≤ 100 mΩ (initial, without wire) |
| Insulation Resistance | ≥ 100 MΩ @ 500 VDC |
| Dielectric Strength | 500 VAC (50–60 Hz) |
| Vibration Resistance | 10–55 Hz, amplitude 0.75 mm (double amplitude) |
| Operating Temperature | –40 ℃ to +85 ℃ |
| Operating Humidity | Up to 85% RH |
| Electrical Life | ≥ 100,000 cycles (depending on load) |
| Mechanical Life | ≥ 500,000 cycles |
| Structure | With built-in resistor, sealed design |
| Protection Rating | IP67 (waterproof and dustproof) |
| Certifications | ISO9001, IATF16949, ISO14001 |
What is the lifespan of a hermetically sealed limit switch?
Depending on the model, the switch's mechanical lifespan can reach 1 million to 10 million cycles,
offering long-term stable operation and suitable for high-frequency use.
What is a hermetic limit switch? How does it differ from a standard limit switch?
A hermetic limit switch features a fully sealed structure, preventing the ingress of moisture,
dust, and corrosive gases. It is suitable for use in extreme environments and offers significantly
higher sealing and stability than standard switches.
Is this sealed limit switch customizable?
OEM/ODM customization is available. Parameters such as mounting method, cable length, terminal
type, operating force, and sealing rating can be adjusted to meet your needs. Please contact
Unionwell for more information.
What temperature and pressure can Unionwell's hermetically sealed limit switches withstand?
Most models are rated for temperatures between -40°C and +85°C. They feature a pressure-resistant
housing and a stable sealing structure, making them suitable for automotive, sealing, and
waterproofing systems.