G303RView series
G303R Automotive Waterproof Micro Switch
Automotive-oriented waterproof switching for sensing and interlock functions.
Application-ready micro switch solutions
Micro switch solutions
for OEMs.
Micro switches engineered for reliable response in automotive, new energy, appliance and industrial control systems.
IATF 16949ISO 9001ISO 14001
G3 SERIESSUBMINIATURE WATERPROOF
UL / ENECGlobal approval options
OEM / ODMCustom solutions
0170,000+ m²R&D and production area
02200+ patentsContinuous product innovation
0390% automationProduction and testing processes
High-demand selection paths
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or application.
Reach the right switch family quickly, then send the operating conditions, expected volume, and target market for an engineering match.
Search the full Unionwell libraryBy environment
Waterproof & sealed
IP67-oriented platforms for moisture, dust, vibration, and demanding mechanisms.
By form factor
Basic & miniature
Proven snap-action families with flexible levers, terminals, ratings, and sizes.
By application
Automotive
Switch platforms for locks, seat systems, shifters, cabin controls, and safety sensing.
By application
EV & charging
Sealed detection and electronic-lock solutions for charging guns, ports, and interlocks.
By application
Home appliances
Door, water, temperature, and position detection for high-volume appliance programs.
By application
Industrial control
Limit, position, interlock, and protected sensing for equipment and automated lines.
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Start from what
you know.
Begin with your market, design requirements, a proven Unionwell series, or the part already in your assembly.
01
Product platforms
02Browse switch families
Compare basic, waterproof, automotive, and custom directions.
Industry solutions
03Browse by application
Go directly to automotive, EV charging, appliance, or industrial use cases.
Guided selection
04Match requirements
Share size, environment, actuator, load, volume, and approvals.
Fast replacement
Cross-reference a part
Share an existing model number for a Unionwell alternative.
Product families
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switch.
From compact detection to sealed automotive control, select a proven platform and configure it around your assembly.
View all products
G9 / G9A / G9BView series
G9 / G9A / G9B Sealed Mini Micro Switches
Compact sealed platforms for automotive, appliance, and charging applications.
G5 / G5W11 / G6 / G10View series
G5 / G5W11 / G6 / G10 Basic Switch Platforms
Proven basic switch families for appliances and electrical equipment.
G23A / D / H / K / LView series
G23A / D / H / K / L Charging Electronic Locks
Motor electronic lock family for DC charging guns and onboard AC charging sockets.
Manufacturing, connected
From first sketch
to final switch.
Product development, precision tooling, stamping, injection moulding, overmoulding, automated equipment, final assembly, and laboratory testing - coordinated under one manufacturing group.
01Engineering
02Tooling
03Production
04Validation
600+Team members
350MAnnual unit capacity
30+Professional R&D engineers
ULAuthorised witnessed laboratory
Browse by application
Start with your
industry.
Review typical switch positions, design priorities, and suggested Unionwell series for your product category.
All applications-40°C to +150°C application range, vibration resistance, IP67 / IP68 options
Automotive Switches
Automotive-grade sensing and interlock solutions for vehicle controls and mechanisms.
IP65+ with IP68 options, high-voltage tolerance, resistor integration, lifecycle validation
EV Charging Equipment
Sealed detection and locking switches for charging guns, ports, covers, and status mechanisms.
Waterproof, high-temperature, silent operation, compact packaging
Home Appliance Switches
Application-matched switches for door control, water systems, temperature control, and dependable appliance operation.
Position detection, extreme-limit control, environmental protection, lifecycle consistency
Industrial Automation
Limit, position, and safety detection for automated equipment and demanding production environments.
Load control, overload protection, waterproof design, mechanical endurance
Power & Garden Tools
Switching solutions for on-off control, overload protection, and operation in outdoor or humid environments.
Applications in practice
From equipment
to switching function.
Explore the mechanism, the switching role, and the selection checks behind these Unionwell application studies.
Mechanism photograph and switch referenceInside an automotive door latch
Design challenge Report latch position within a compact mechanism exposed to moisture and vibration.
Switching role Turn a defined mechanical state into an input for the vehicle control system.
Explore the application
Connector mechanism engineering viewCharging-gun electronic lock feedback
Design challenge Confirm lock movement during connector engagement and release.
Switching role Provide a repeatable position signal while force, travel, sealing, and cable routing are reviewed.
Explore the applicationUnionwell G5 switch platformDryer overflow detection with a float
Design challenge Detect a rising water level when drainage or tank conditions become abnormal.
Switching role A float movement actuates the switch to provide an abnormal-level input to the appliance controller.
Explore the applicationInside Unionwell
Real equipment.
Visible process.
Company photographs show the laboratory and automated production equipment. Discuss the process controls and validation plan needed for your switch program.
UNIONWELL / HUIZHOU / CHINA
One manufacturing partner.
Worldwide confidence.
Unionwell is a sensing and control component manufacturer serving global customers with engineering, manufacturing, quality, and after-sales support from Huizhou, China.
About UnionwellIATF 16949ISO 9001ISO 14001ISO 45001ISO 50001UL · cUL · ENEC · CQC · CE
Engineering resources
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Engineering support
2D / 3D CAD Drawings
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Engineering supportCertification & Compliance Documents
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Engineering supportCompetitor Cross-Reference
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Engineering supportDatasheets & Selection Guides
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Choose your next step
From a question
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Compare configurations, clarify drawing terms or browse practical references before requesting a project review.
Engineering articles & product references
Browse Unionwell product specifications and practical application articles by page. Every available entry opens directly on this website.
Explore this guide ↗Micro switch selection guide & specification comparison
Select a micro switch by mechanism, electrical load, environment, operating force and travel. Compare published Unionwell configurations and open technical PDFs.
Explore this guide ↗Micro switch terminology: force, travel & contact states
Understand operating force, pre-travel, overtravel, movement differential, operating point and contact arrangement before comparing micro switch drawings.
Explore this guide ↗Micro switch sourcing & engineering FAQs
Answers about Unionwell switch selection, samples, drawings, certification scope, quotations and OEM project validation.
Explore this guide ↗Start a conversation
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sales37@unionwellgroup.comTEL: +86 159 8920 8498WhatsApp: +86 159 8920 8498Huizhou, Guangdong, China