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Introduction of the Steps and Factors Affecting the Selection of Micro Switches

Release time:2019-05-22    Clicks: Click

 
What steps and factors will affect the selection of microswitch? Let's give you a detailed introduction.
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When choosing micro-switch, you need to consider many factors, such as size, load requirements, working environment and reliability, so you must know the actual application requirements: what size of switch is required? What rated power is required? Is it for low-voltage application? Is the switch sealed? Does the switch need to withstand extreme temperature? Does it need the certification of international organizations? Key applications? Once these problems are identified, it's easier to select the appropriate switch for the application.
Step 1: Understand your electrical requirements
Fretting switches can usually cut off the current from 5mA/5VDC to 25A/250VAC.  The micro switch product line provides a range of products from low energy consumption to power load electrical type, which are suitable for various applications.
Engineers must know the rated current and voltage (AC or DC) required for specific applications in order to select the appropriate switch. Because all kinds of equipment in all industries are dedicated to low energy consumption, micro-switch must be able to work under low current (logic level load) and DC voltage.
Step 2: Consider environmental conditions
Environmental requirements have a great impact on the selection of micro-switch, especially in high reliability and critical applications such as industrial control, medical equipment and so on. Understand the application of environmental conditions, including air pollutants that may enter the switch, the liquid in which the switch is located, and operating temperature requirements.
What are the factors affecting the selection of microswitch
Step 3: Inspection body certification requirements
Selecting switches 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.
Step 4: Understand how the size of the switch affects other characteristics
Size is very important when selecting micro switch. Switch size is directly related to its characteristics, including current range, stroke and operating force. For example, the smallest micro-switch on the market today has a size of 0.50 inches x 0.236 inches x 0.197 inches (LxWxH). Although this tiny switch is suitable for detecting circuit state in compact circuit breakers, it usually only breaks 0.1 to 3 amperes (A) of current and has a shorter trip.
Step 5: Define service life requirements
The reliability of the switch is critical. How many times do you need to specify the electrical and mechanical life of an application? Different switches have different contact materials, shells and terminals, which can meet the electrical and mechanical life requirements of different applications.
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