IP67 Micro Switch For Automotive Applications

IP67 Micro Switch For Automotive Applications

IP67 Micro Switch for Automotive Applications

G3 IP67 Waterproof Automotive Micro Switch For Automobile Door Application

In automotive electronic components, switches are not the most expensive components, but they play an indispensable role in the electronic unit, so they are critical to the success of all projects. The micro switch G3 series subminiature snap-action switches are suitable for applications requiring sensing an object’s presence or absence. For customers who need a switching solution to meet performance and design expectations, the G3 series automotive micro switch offers product configurations at a great value. The G3 series waterproof automotive micro switch is waterproof with an IP67 grade, often used in automotive applications due to its sealing ability and quick mounting option.


IP67 Waterproof Automotive Micro Switch Principle

Automotive micro switch sets in the car’s inner door lock position; the auto micro switch is tinny but has a vital role in the car door lock-control system. 

When you prepare to get off, the first action is to open the inner car door, and then you will rotate the door handle. At the same time, the automotive door handle creates a push action, and the auto micro switch will receive the push force and start work. It will disconnect the circuit to the car door control system and state and close the state. At last, The door lock will be open.

Today, self-driving cars have more computing power than ordinary fighter jets. Many electronic components can use in the engine, drive train, chassis, body system, comfort system, active safety system, and driving assistance system of a car. The value of electronic components is as high as 30% of the total production cost of the car. 

Unionwell G3 sub-miniature microswitches are widely used in the automotive inner door lock. Usually, we name G3 sub-miniature microswitches automotive micro switches. Unionwell G3 micro switches waterproof grade is IP67. The microswitches avoid rainwater entry into the car door inner lock microswitches structure inside to cut the circuit.


Types Of IP67 Automotive Switches

The parts of the car have applied the widest variety of micro switches. These automotive switches can be classified into the following groups:

automotive switches type

  Micro Swirtch Name

Switch  1

Micro switch

Switch  2

Rocker switch

Switch  3

Waterproof micro switch

Switch 4

Temperature micro switch

Switch 5

Tact Switches

Switch 6

Push-button micro switch

Switch 7

Micro limit switch

Switch 8

 Dustproof micro switch

Switch 9

Rotary switches

Switch 10

Sealed micro switches


We know that G3 subminiature micro switches are widely used in the car inner door lock. G3 micro switch is a small device that can send an electrical signal by a mini-physical actuator. It mainly controls the safety circuit of the machine. For example, the car’s inner door lock applies the G3 micro switch to control the door. Only close the door can the micro switch be released and send an electrical signal to the car control system. Then the car will start the motor and run safely. It requests a high-quality and high-reliability micro switch. Meanwhile, the micro switch must quickly snap and have a long service life.


Value To Customer

Value – the right switch for a specified application at a competitive price. Unionwell matches product performance with customer design expectations.

Customization – various actuators, terminations, wire connections, and operating and electrical characteristics result in thousands of potential configurations. 

Reliable – exceeding UL and other agency requirements with repeatability and consistent performance within various conditions. 

Environmental protection – can operate under challenging conditions (G3 series are sealed, with an IP67 rating). 


Key Features And Benefits Of An Automotive On-off Switch

-Small size and light switches lend themselves to numerous potential applications. 

-Choice of low energy or power-duty electrical ratings allows the switch to be specified in more applications. 

-Broad range of amp ratings (from 0.1 A to 3 A). 

-Watertight IP67 sealing available on some listings allows the switch to be used where sealing and presence/absence detection are required. 

-UL, cUL, ENEC, and CE approvals. 

-Automotive micro switches usually request 12v dc micro switches or 12vdc micro switches. It meets the car industry standard.


Unionwell Micro Switch Plays A Vital Role In The Car Parts.

G3 series IP67 automotive switches are suitable for the Engine lock system/Door lock system/Back door lock/Glovebox/Centre lock system/Shift system,/Reading lamp switch;

G2 rotary switch is suitable for the rotary switch on hock;

G9 waterproof micro switches are suitable for the Extinguisher;

G1/G17 sealed tact switch is suitable for the Inverter;

G10 series subminiature micro switch is suitable for the Shift system/Reading lamp switch.

The actual automotive limit micro switch used in the car can be referenced in the following pictures:


IP67 Micro Switch for Automotive Applications

Unionwell G3 Series Subminiature Sealed Micro Switch Products List >> 


Unionwell Micro Switch China Manufacturer: 20+ Years Of Professional R&D Experience

Our unionwell manufactures and develops micro switch solutions and conducts product evaluations for our customers in an actual startup state. This way, our customers will trust that the switch will work in the car they design before it is shipped. We also provide application design services to support our customers during the design phase.

Huizhou Unionwell Sensing & Control Electronics Co., Ltd specializes in quality micro switches for the automotive industry and white goods of home appliances. Main products include basic micro switches, waterproof switches, air pressure switches, mechanical keyboard switches, and door switches.

For better pricing, lead time, and quality control guarantees, we acquired Huizhou Greetech Electronics Co., Ltd in 2021. We made it our China production base with over 1000 employees and a 260 million pieces/year production capacity.

Huizhou Greetech is an ISO9001, IATF16949 and ISO14001 certified micro switch manufacturer whose entire series of products have been granted global access permit certifications, which include ENEC, UL, CE, CB, etc.

Now, Our global reach covers North America, Europe, Asia, and South America. Most of our business partners/end customers are Global 500 enterprises, including world-famous home appliance brands and leading automotive suppliers in North America and Europe.

Shortly, we are launching a new industrial base at Longmen, Huizhou, Guangdong Province; automation equipment will be introduced, which would massively improve the switch production capacity from 260 million pieces to over 1.3 billion pieces/year. 

A one-stop system will be built, covering product development, precision molding, injection molding, precision stamping, automated equipment R&D, assembling, and testing. 

The professional sales team is on hand to provide assistance and quick response to 3D drawing requests, price quotes, and access to an adequate sample program that allows engineers to test and qualify switches for their end product applications.


Core Value:

Goal, Responsibility, Coordination, Innovation

Effort, Development, Openness, Integrity


Our Mission:

We must maintain long-term relationships that stand the test of time.


Our Vision:

To become a first-class global manufacturer of precision components and modules.


Learn More:


What Is A Micro Switch?

The micro switch is a contact mechanism with a small contact interval, a snap-action mechanism, and a contact mechanism that performs the switching action with a specified stroke and force. Small, hence the name micro switch, also called a sensitive switch.


Classification Of Micro Switches

There are many types of micro switches, and there are hundreds of internal structures. According to the volume, there are ordinary, small, and ultra-small; according to the protection performance, there are waterproof, dustproof, and explosion-proof types; Single type, double type, and multi-link types.

There is also a strong disconnect micro switch (when the reed of the switch does not work, the external force can also make the switch disconnect); according to the breaking capacity, there are ordinary type, DC type, micro, and high-current type.

According to the use environment, there are ordinary types, high-temperature resistant type (250℃), super high temperature resistant ceramic type (400℃)

Micro switches are generally based on unassisted pressing accessories as the basic type, and small and large stroke types are derived. Different auxiliary pressing accessories can be added according to the needs. According to the different pressing accessories added, the switches can be divided into various forms: button type, reed roller type, lever roller type, short boom type, long boom type, and so on.

(1) Small micro switch

(2) Ultra-small micro switch

(3) Super small micro switch

(4) Waterproof micro switch


How The Micro Switch Works

The external mechanical force acts on the action reed through transmission elements (pressing pins, buttons, levers, rollers, etc.). An instantaneous action occurs when the action reed is displaced to the critical point, making the moving contact at the end of the action reed and the fixed contact point switch on or off quickly.

When the force on the transmission element is removed, the action reed generates a reverse action force. When the reverse stroke of the transmission element reaches the critical point of the action of the reed, the reverse action is completed instantaneously.

The contact distance of the micro switch is small, the action stroke is short, the pressing power is small, and the on-off is fast. The action speed of the moving contact has nothing to do with the action speed of the transmission element.

Unionwell micro switches have obtained UL, ENEC, CQC, and other international certifications and passed ISO9001, IATF16949, and ISO14001 quality system assurance.


Related Link:

What Is A Micro Switch In A Car

Waterproof micro switch product

12 Volt Micro Switch

Micro Switches for Car Door Locks

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