UnionwellWaterproof ON/OFF Micro Switches - IP67 Rated Industrial Switches | Unionwell

Unionwell is a professional manufacturer of waterproof ON/OFF micro switches, with over 20 years of experience in the R&D and production of sealed switches, and an annual production capacity of 300 million units. Our IP67-rated waterproof ON/OFF micro switches feature an integrated sealed structure design, ensuring stable and reliable operation in harsh environments such as high humidity, dust, and outdoor conditions.

Our products cover a wide force range of 50gf to 400gf, support 10A high-current loads, and have passed international authoritative certifications such as UL, cUL, IATF16949, and ISO9001. They are widely used in automotive electronics, smart homes, industrial control, and new energy charging, among other fields. We provide a full range of solutions, from standard products to deeply customized solutions.

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This video shows you the automated production of Unionwell waterproof switches!

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Waterproof on off micro switch technical specifications

The waterproof micro switch is compact, mechanically strong, and sealed to IP67. Designed for harsh environments, it ensures stable performance in automotive controls and home appliances. Rated at 10A 250VAC, it can withstand millions of switch operations and maintain stable on/off action.

Unionwell waterproof on off micro switches are factory-directly produced and sold, providing reliable snap-action contacts and tight tolerance operation. It is ideal for automotive door systems and home appliance power control, with an operating temperature range of -40℃ to +85℃, and supports customized actuator types, terminal layouts, and contact materials.

Product Series	Protection Rating	Rated Current	Operating Force	Terminal Type	Typical Applications
KAB Series Standard Type	IP67	5A/10A 250VAC	100–250gf	PCB / Solder / Quick Connect	Home appliances control, industrial buttons
KAC Series Ultra-Miniature	IP67	3A/5A 250VAC	50–160gf	SMD / PCB pins	Consumer electronics, smart devices
KAD Series With LED	IP65	3A 250VAC	150–300gf	PCB / Wire leads	Automotive panels, instrumentation
KAE Series High Current	IP67	16A 250VAC	200–400gf	Quick connect terminals / Screw	Industrial equipment, power control
KAF Series Long Travel	IP67	5A 250VAC	100–300gf	PCB / Solder	Mechanical equipment, limit detection
Custom Series	IP65 / IP67	Customized	Customized	Customized	Special application scenarios

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How Waterproof ON/OFF Micro Switches Work

Waterproof ON/OFF microswitches are electrical switches with a sealed design, achieving rapid circuit switching through an internal quick-acting mechanism. Unlike ordinary microswitches, their housing and terminals are sealed, effectively preventing moisture, dust, and oil from entering and ensuring reliable operation in harsh environments.

ON state:

When the pressing force reaches the actuation point, the internal spring flips instantaneously, causing the moving contact to quickly close with the stationary contact, thus completing the circuit. The quick-acting mechanism ensures instantaneous contact, reducing arcing and extending contact life.

OFF state :

When the pressing force is released to the reset point, the spring quickly rebounds, rapidly separating the moving contact from the stationary contact, thus disconnecting the circuit. This rapid disconnection characteristic ensures reliable interruption even in low-voltage, low-current signal circuits.

Housing Seal:
Ultrasonic welding or a sealing ring structure completely isolates the internal cavity of the switch from the external environment, preventing liquid and dust ingress.

Terminal Seal:
Epoxy resin potting or rubber sealing rings are used at the terminals to maintain the complete protection level even after wiring, preventing water leakage along the wires.

Rod Seal:
A flexible rubber sealing sleeve is used at the operating rod, ensuring both effective transmission of pressing force and complete seal integrity.

Material Selection:
The housing is made of high-temperature and chemically resistant engineering plastics, and the seals are made of silicone rubber or fluororubber, suitable for a wide temperature range.

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waterproof on off micro Switch Features

● IP67 Fully Sealed Protection: Utilizing an integrated sealed structure design, it has achieved IP67 dust and water resistance certification, enabling stable operation in harsh environments such as high humidity, dust, and outdoor rain. Its protection level meets industrial-grade standards.
● Quick-Action Contact: Built-in precision spring-loaded quick-action mechanism with an action time of <10ms and contact resistance ≤10mΩ, ensuring stable electrical performance even after millions of cycles.
● Wide Temperature and Voltage Adaptability: Operating temperature range -40℃ to +85℃, supports multiple current specifications including 5A/10A, AC/DC compatible, suitable for various applications from consumer electronics to industrial equipment.
● Long Lifespan Design:High-quality silver alloy contacts + high-precision molds + automated production ensure a mechanical lifespan of over 100,000 cycles and an electrical lifespan of over 10,000 cycles, reducing customer maintenance costs.
● Multiple Configuration Options: Offers various combinations of operating force, stroke, terminal type, and wire length, supporting multiple installation methods including PCB pin insertion, soldering, quick connection, and wire connection.
● Fully Certified Internationally:Certified by multiple international organizations including UL, cUL, ENEC, CE, and RoHS, and complies with the IATF16949 automotive industry quality system, ensuring worry-free access to the global market.

Why Choose Waterproof ON/OFF Switches for Your Project?

In harsh environments, basic micro switches are prone to malfunctions due to water, dust or oil mist intrusion. The waterproof micro switch adopts a sealed structure design, which has waterproof and dustproof properties. It is widely used in outdoor equipment such as automotive , electric vehicles, and charging guns. It can not only effectively protect internal parts but also extend the service life. At the same time, the waterproof on/off micro switch has a simple and reliable structure, which is an ideal choice to ensure the stable operation of the equipment.

Parameter Category	Specification	Value
General Specifications	Product Type	Waterproof ON/OFF Micro Switch
	Protection Rating	IP67 (Dustproof & Waterproof, Suitable for Temporary Immersion)
	Mechanical Life	≥100,000 Cycles
	Electrical Life	≥10,000 Cycles
Electrical Specifications	Rated Current	5A / 10A 250VAC (Model Dependent)
	Rated Voltage	125/250VAC, 30VDC
	Contact Resistance	≤10mΩ (Initial Value)
	Insulation Resistance	≥100MΩ (500VDC)
	Dielectric Strength	1500VAC for 1 Minute
Mechanical Specifications	Operating Force	50gf–400gf (Optional)
	Pre-travel	1.0–3.0mm (Model Dependent)
	Over-travel	≥0.5mm
	Differential Travel	≤0.3mm
Environmental Specifications	Operating Temperature	-40°C to +85°C
	Storage Temperature	-40°C to +125°C
	Humidity	5%–95% RH (Non-condensing)
	Vibration Resistance	10–55Hz, 1.5mm Double Amplitude
Materials	Housing Material	High-Temperature Engineering Plastic (PBT/PA66)
	Contact Material	Silver Alloy / Gold Alloy (Optional)
	Terminal Material	Tin-Plated Brass / Silver-Plated Brass
	Sealing Material	Silicone Rubber / Fluororubber
Certifications	Safety Certifications	UL, cUL, ENEC, CE, RoHS
	Quality Management	IATF 16949, ISO 9001, ISO 14001
	Environmental Compliance	RoHS, REACH, Halogen-Free

Basic Switch vs. Waterproof ON/OFF Switch Comparison Table

To help you choose the right switch for your application, the table below compares the main differences between waterproof ON/OFF micro switches and basic micro switches in terms of protection, durability, operating environment, and overall reliability.

Comparison Item	Standard ON/OFF Micro Switch	Unionwell Waterproof ON/OFF Micro Switch
Protection Rating	IP40 or lower, not waterproof	IP67 rated, dustproof and waterproof, withstands temporary immersion
Application Environment	Dry indoor environments, mainly for internal home appliance applications	Suitable for both indoor and outdoor use, including humid, dusty, and industrial environments
Waterproof Design	No sealing; internal contacts are exposed	Triple sealing design on the housing, terminals, and actuator
Operating Temperature	-20°C to +65°C (Typical)	-40°C to +85°C (Wide-temperature range)
Corrosion Resistance	Poor; contacts are prone to oxidation and rust	Excellent; sealed construction protects internal contacts
Service Life	Standard lifespan; significantly reduced in harsh environments	Long service life; sealing helps maintain the rated lifespan
Typical Applications	Home appliances and indoor consumer electronics	Automotive electronics, outdoor equipment, industrial control, and new energy systems
Certifications	Basic safety certifications	UL, cUL, ENEC, IATF 16949, and other international certifications
Return on Investment	Lower purchase cost but higher failure rate and maintenance cost	Slightly higher initial cost, but greater reliability and lower total lifecycle cost

Waterproof On Off Micro Switch

Rocker Switch Drawing

Application Scenarios

Waterproof ON/OFF micro switches are widely used in numerous industries, including home appliances, new energy systems, automotive electronics, and industrial control equipment. In these fields, reliable performance and environmental resistance are crucial.

Automotive Electronics
- ●Rice cooker switches
- ●washing machine switches
- ●dishwasher switches
- ●electric pressure cooker switches
- ●electric fan voltage control switches
Industrial Control
- ●Charging pile interface testing
- ●energy storage systems
- ●photovoltaic inverters
- ●battery management system switches
- ●battery swapping station equipment
- ●Car Door Lock Systems
- ●Car Window Controls
- ●Trunk Release
- ●instrument panel controls
Home Appliances
- ●Automated production lines
- ●industrial control panel switches
- ●machine tool limit switches
- ●AGV (Automated Guided Vehicle) power switches
- ●packaging machinery
New Energy

Waterproof Micro Switch Buying Guide

Unionwell offers a variety of waterproof micro switches in different specifications and models. This guide will help you smoothly complete the selection process for Unionwell waterproof ON/OFF micro switches.

Step 1: Determine the Application Environment: First, clarify the environmental conditions of the usage scenario: Indoor/Outdoor? Is it exposed to water or a humid environment? What is the temperature range? Are there corrosive gases or dust present? Based on this, determine the required protection rating (IP65/IP67/IP68) and material requirements.
Step 2: Determine Electrical Parameters: Based on the actual circuit requirements, determine the rated voltage, rated current, load type (resistive/inductive/capacitive), and circuit type (normally open/normally closed/single-pole double-throw). It is recommended to retain at least 30% current margin to ensure reliability.
Step 2: Determine Electrical Parameters: Based on the actual circuit requirements, determine the rated voltage, rated current, load type (resistive/inductive/capacitive), and circuit type (normally open/normally closed/single-pole double-throw). It is recommended to retain at least 30% current margin to ensure reliability.
Step 3: Select Operating Characteristics: Based on the triggering method and tactile requirements, select the operating force range, travel length, and operating head type (straight rod/roller rod/long rod/wired, etc.). Also consider installation space and mounting method.
Step 4: Select Terminal Type: Choose the terminal type based on your application and installation method: PCB pins are suitable for board soldering; quick-connect terminals facilitate field installation and maintenance; wired terminals offer a higher level of protection; soldering terminals are less expensive.
Step 5: Confirm Certification Requirements: Certification requirements vary by target market: North America requires UL/cUL certification, the EU requires CE/ENEC certification, and the automotive industry requires IATF 16949 certification. Please confirm the market access requirements in advance.
Step 6: Contact Us for Solutions: Please provide your application requirements and specifications. Unionwell's professional technical team will recommend the most suitable product solution for you within 24 hours and provide sample testing and technical support.

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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

FAQ

What does the IP67 protection rating of a waterproof ON/OFF micro switch mean?

IP67 is a protection rating standard set by the International Electrotechnical Commission (IEC). The "6" indicates complete protection against dust ingress, and the "7" indicates that it can be briefly submerged in 1 meter of water for 30 minutes at normal temperature and pressure without affecting normal operation. Unionwell's IP67-rated waterproof switches have passed rigorous immersion and salt spray tests and can be used in outdoor rain, high humidity, dusty environments, and occasional splashes.

What is the difference between a waterproof micro switch and a regular micro switch?

The main difference lies in the sealing structure. Regular micro switches do not have a waterproof design and are only suitable for dry indoor environments; waterproof micro switches employ multiple protective structures, including a sealed housing, sealed terminals, and sealed pushbutton, allowing them to operate reliably in harsh environments such as humid, dusty, and outdoor conditions. Furthermore, waterproof switches prioritize temperature resistance and corrosion resistance in their material selection.

How to choose a waterproof micro switch with the appropriate operating force?

The operating force selection needs to be determined based on the application scenario: 50~100gf for tactile feedback (e.g., consumer electronics); 100~250gf for general applications (e.g., home appliances, automobiles); 250~400gf for heavy-duty industrial applications (e.g., industrial equipment, large buttons). A balance between operating feel, risk of accidental triggering, and lifespan must also be considered. Unionwell technical support can assist with the selection process.

What certifications do your waterproof switches have?

Unionwell waterproof microswitches have passed multiple international authoritative certifications, including US UL, Canadian cUL, EU ENEC, CE, RoHS, REACH, etc. Our production system is certified by IATF16949 automotive industry quality system and ISO9001 quality management system. Certificate copies of all certifications can be provided for customer verification.

Do you support OEM/ODM customization? What is the minimum order quantity?

We support full-process OEM/ODM customization services, including operating force adjustment, terminal type, wire length, housing color, logo printing, and customization of special parameters. The MOQ for standard products is 1000pcs, while the MOQ for customized products varies from 5000 to 50000pcs depending on complexity. Please contact our sales team for an assessment.

What is the lifespan of a waterproof micro switch?

Under rated load and normal operating conditions, Unionwell waterproof micro switches have a mechanical lifespan exceeding 100,000 cycles and an electrical lifespan exceeding 10,000 cycles. Electrical lifespan can be significantly extended under light load (signal level) applications. Actual lifespan is affected by factors such as load type, operating frequency, and environmental conditions; please refer to the corresponding product specification sheet for details.

What are the lead times for samples and bulk orders?

Standard samples are readily available and shipped within 3-5 business days; bulk orders have a lead time of 2-3 weeks. For customized products, depending on development complexity, sample lead times are 1-2 weeks, and bulk order lead times are 3-6 weeks. We have warehousing locations worldwide, and VMI consignment inventory services are available for core customers to achieve JIT on-time delivery.

Can waterproof switches be used underwater?

IP67 waterproof switches support short-term immersion (1 meter depth for 30 minutes), but prolonged immersion is not recommended. For long-term underwater operation, we recommend choosing an IP68 rated product. Additionally, underwater applications require consideration of water pressure, water corrosiveness, and waterproofing of wiring connections. Please contact our technical team for a solution assessment.

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