Since its introduction in the 1930s, micro switches, as small electromechanical switches, have evolved to meet a variety of application requirements, including aerospace, home appliances, boiler controls, medical equipment, sprinkler systems, testing Equipment, timers, and vending machines, etc. Micro switches are commonly used to detect temperature, position, and liquid level.
For more information, please visit Basic Micro Switch for Sale.
There are many micro switches types, the following 5 elements can help you choose the micro switch suitable for your specific application.
Size matters when choosing a micro switch. Switch size is directly related to its characteristics, including current range, travel, and operating force. For example, one of the smallest micro switches on the market today measures 0.50" x 0.236" x 0.197" (LxWxH). While this tiny switch is suitable for detecting circuit conditions in compact circuit breakers, it typically only interrupts 0.1 to 3 amperes (A) and has a short journey.
Applications that require higher currents typically require larger switches. For example, in the fuel tank application of the micro switch, the micro switch used to detect the liquid level needs to be able to provide a large stroke and withstand a large current. Usually, in liquid-level switch applications, the switch directly drives the water pump and carries a large current. This requires a large micro switch rated at 20A or 25A at 125VAC or 250VAC.
Tip: The smaller the switch size, the smaller the stroke and the current that can be broken.
Micro switches for sale are usually capable of breaking currents from 5mA/5VDC to 25A/250VAC. The Micro Switch product line offers a range of products from low energy consumption to power load electrical types for a variety of applications. Engineers must know the current and voltage ratings (AC or DC) required for a specific application to select the appropriate switch. As devices of all kinds in all industries strive for low power consumption, micro switches must be able to operate at low currents (logic level loads) and DC voltages.
Environmental requirements have a great influence on the selection of micro switches, especially in applications requiring high reliability and criticality such as industrial control and medical equipment. Understand the environmental conditions of the application, including contaminants in the air that may enter the switch, the liquid in which the switch is located, and operating temperature requirements. Applications in harsh environmental conditions require the selection of sealed switches with a wide operating temperature range. The highly reliable microswitches operate from -65 degrees Fahrenheit (-54 degrees Celsius) to 350 degrees Fahrenheit (177 degrees Celsius), making them easy to handle in a variety of applications. At the same time, it should also be noted that the protection level of the switch should be at least IP67 to prevent liquid intrusion. This eliminates the need to spend a lot of time designing an enclosure that achieves the same degree of protection.
Switch reliability is critical, and it is important to know how many electrical and mechanical operating lifetimes an application will require. Different switches have different contact materials, housings, and terminals to meet the electrical and mechanical life requirements of different applications. A highly reliable micro switch by professional micro switch manufacturers can operate 10 million to 20 million times before mechanical failure, and 50,000 to 100,000 times under maximum load before electrical failure.
Choosing micro switch in China that meet various international electrical requirements can help you simplify product design for different regions. Some major standard certifications include UL certification in the United States, cUL certification or CSA certification in Canada, ENEC certification in Europe, and CQC certification in China.
The microswitch is one of the important product series of Bituo Electric. They can be used in many different applications and are suitable for a range of industries. Microswitches are used in many modern smart applications without which smart appliances would not be possible.
In terms of size, a micro switch may seem small, but it’s incredibly powerful for determining what your device can do. The micro switch is very sensitive that only requires very little pressure to activate.
They are very common in household appliances and switch panels with small buttons. Micro switches are generally inexpensive and have a long lifespan, which means they can operate for a long time. Sometimes they can reach 10 million cycles.
They are very reliable, fast, and efficient to use. Because of their reliability and sensitivity, micro switches are often used as safety devices. They are used to prevent doors from closing when in the way or for other similar applications.
If you are looking for more details, kindly visit Industrial Limit Switch Factory.
For instance, the above is the circuit connection showing the working of a microswitch. When the lever is un-pressed (the left-hand side circuit) and when it’s pressed (the right-hand side circuit). Therefore, the input is the common terminal (C).
Firstly, the switch is in Normally Closed (NC) mode. the lever terminal C or the move-able contact is connected to the NC terminal and there is no contact between the C and Normally Open (NO). Initially, a green LED glows which is connected to the NC terminal of the switch.
When slight force is imposed on the liver terminal or when it is pressed down the C and NO terminals get connected and the blue LED glows as there is now contact established between the C and NO terminals.
Depending on the application we can use the SPDT micro switch in NC or NO mode, separately or simultaneously.
Before making the decision to check your micro switch, it is important to find out some possible faults that can affect it from functioning optimally. You need to finger out that while some of these faults can be addressed and resolved, others cannot.
This means while you can hire a repairer or decide to fix some of these problems on your own, nothing can be done to improve such electrical switch when some problems are experienced.
The faults that can affect microswitch are components getting burnt, low-quality components/parts, and depreciation when the switch works and stops suddenly.
Although there are other faults, it has been discovered that over 70% of micro switches usually experienced these issues.
The process of checking for faults in micro switches is so simple that anyone can do it. There is no special knowledge or skill required to get going. Below are some tips that can help you out today. Just apply them wherever necessary on your micro switch and you will be fine.
There is a plastic material used to encase micro switches. This can be done through several means. The reason why the plastic materials need to be separated is to ensure you are having a very clear view.
Simply put, it will enable you to see how the micro switch components have been assembled. You can make use of a drilling tool for this purpose.
You may be wondering what the picture has got to do with micro switches. The truth is that this is very important especially if you don’t want to damage such an electrical switch beyond what it is at the moment.
Most people who have attempted to open their micro switches usually encounter one problem. This is the challenge of not being able to assemble them as they were.
After taking pictures of your micro switch, you can then start checking the components one after another. This is where you have to ensure every component has been properly checked to know what could be wrong. Failure to do such can lead to wrong assumptions about whether the micro switch is working or not.
When micro switches have worked for a long period of time, there is every chance that dirt can begin to accumulate in them. This is an opportunity to have its internal parts cleaned for optimal functioning. It is basically all about cleaning the contacts.
Once you have checked the parts and discovered what could be wrong with such a micro switch, it is high time you had it assembled the way it was originally.
There is nothing special required in getting this step completed. All you need to do is have the pictures that have been taken earlier on looked at in order to know how the components have been arranged.
Depending on the application we can select the type of micro switch used. Various types of lever terminals are available in micro switch like Pin Plunger, Short Straight lever, Standard Straight Lever, Long Straight Lever, Extended Straight Lever, Small Simulated Roller Lever, Standard Simulated Roller Lever, Roller Lever, L-Shaped Lever
Pls, visit us at [email protected] for more information about micro switch.
The company is the world’s best Roller Lever Actuator Limit Switch supplier. We are your one-stop shop for all needs. Our staff are highly-specialized and will help you find the product you need.