As a common electronic component, waterproof micro switches are widely used in a variety of equipment and systems to control switching actions. It is characterized by its waterproof and dust-proof function, so it can work reliably in humid, rainy and dusty environments. In this article, we will introduce the working principle, wiring method, use and some important parameters of waterproof micro switches.
Working principle of waterproof microswitch
Waterproof micro switch is a kind of switch that triggers the contact to connect or disconnect through mechanical structure. It is mainly composed of contacts, movable piece, spring, terminal, button, waterproof sleeve and so on. The working principle of waterproof micro switch is based on the universal principle of micro switch, i.e. when the form-activated arm of the casing or the push button is moved by external force, the contact points inside the switch will be contacted or disconnected under the action of the spring, so as to change the on/off state of the circuit. Waterproof micro switch is compact, waterproof sealing design is added on the basis of micro switch to protect the inside of the switch from moisture, water and other external environment.
Waterproof micro switch wiring method
Before wiring, make sure you have the right tools and materials, such as wires, insulated wire strippers, soldering equipment (if required), etc. The wiring method of the waterproof micro switch is relatively simple and generally includes the following pins: normally open (NO), normally closed (NC) and common (COM). The wiring steps are as follows:
- Confirm the pin type: First, according to the model and specification of the waterproof microswitch, confirm the type of each pin, i.e. normally open (NO), normally closed (NC) and common (COM).
- Strip wire insulation: Using insulated wire strippers, strip the insulation from the end of the wire to expose enough bare wire.
- Connect the wires: Connect the wires to the corresponding pins according to the pin markings of the switch. Typically, the normally open and normally closed pins can be connected as needed, while the common pin is connected to the power supply or load.
- Secure the wires: Make sure the wires are securely attached to the switch pins. You can use soldering equipment or crimping to secure the wires.
- Waterproofing: After determining the direction of the wires, use materials such as waterproof adhesive or heat-shrinkable tubing to seal and pot the connection part to prevent moisture from seeping into the pin part.
- Testing and confirmation: After completing the wiring, carry out the function test of the switch. Make sure that the switch can be triggered normally under the operation of pressing and releasing, and the connection of the circuit is stable and reliable.
Waterproof micro switch application
Due to their waterproof performance, waterproof micro switches are widely used in various equipment and systems that need to work in humid and rainy environments. The following are some common uses:
- Household appliances: waterproof microswitches are often used in microwave ovens, washing machines, dishwashers coffee makers and other household appliances to ensure safe operation in environments affected by moisture.
- industrial automation: in industrial automation equipment such as conveyor control on production lines and positioning of robotic arms, waterproof microswitches can provide stable control in harsh environments.
- automotive electronics: buttons, switches and some parts inside the car, such as car door lock switches, gear shifters, trunk lock switches need to be waterproof to cope with different weather conditions.
- outdoor equipment: waterproof microswitches are also widely used in outdoor lamps, gardening tools and other equipment to ensure that they work reliably in harsh outdoor environments.
- Important parameters of waterproof microswitches
When choosing a suitable waterproof micro switch, here are some important parameters to consider:
- rated current and voltage: make sure the rated current and voltage of the switch match the requirements of the actual application to prevent overload or electrical failure.
- contact form: waterproof microswitches are available in single-pole, single-throw (SPDT), single-pole, double-throw (SPDT), etc. Select the appropriate form according to your needs.
- Ingress Protection: The ingress protection of waterproof microswitches is usually expressed in IP (Ingress Protection) standards, such as IP67, which means that the switch is resistant to dust and water intrusion, and you need to select the protection level that is suitable for the environment.
- Lifespan and durability: The lifespan of the switch is usually expressed in terms of the number of operations, and the appropriate lifespan needs to be selected according to the requirements of the application.
Waterproof micro switch manufacturers
Zhejiang Kangerle Electronics Co., Ltd. is a professional manufacturer of waterproof micro switch, founded in 1993, with rich experience in switch research and development. The factory has passed ISO9001 and IATF16949 quality management system certification, and the switches have obtained UL, TUV, CE, CB, CQC, RoHS and other product certifications. With advanced technology, excellent quality and perfect service, our products are trusted and supported by customers at home and abroad. At present, KANGERLE waterproof micro switches have been widely used in household appliances, medical equipment, automotive industry, electronic instruments and meters, power tools and electronic toys, etc. KANGERLE aims to provide customers with professional waterproof micro switch solutions and support one-stop service. For more details about waterproof micro switches, please visit our official website.