The Appliance Switches has a variety of configurations to choose from
Not because of the gear and increase the resistance of the door. When a fire occurs. The circuit is turned on and the detector is exposed to smoke. The motor is turning, driving the incomplete gear rotation. When the teeth are turned halfway, the toothed half is close to the normal gear, and the two gears are engaged to drive the normal gear to rotate, thereby driving the door with the normal gear to turn on. When they are fully open to 90 degrees, the position switch in the back of the door to play a role, the circuit is broken, the motor stops working. When the fire spread, so that the indoor temperature reaches a certain value, the temperature control switch in the door closed, so that another circuit connected to the motor reverse drive the door reverse movement, the door closed. To prevent the spread of fire The same door above the box with a position switch, when the door is fully closed, the Appliance Switches occurs, the circuit is broken, the motor stops working. If the door is closed in the case, there are still people in time to escape, from the door at a certain distance from a button switch, press the button to open the door for the staff quickly through.
The Appliance Switches is usually able to break current from 5mA / 5VDC to 25A / 250VA. The microswitch product line offers a range of products from low power consumption to power load. So the Appliance Switches must be able to work at low current (logic level load) and DC voltage. However, it is suitable for a variety of applications. Engineers must know the specific current and voltage required for the application (AC or DC to select the appropriate switch.) Due to the low power consumption of all the various devices in the industry, there are some applications that need to be able to break large currents and high voltage switches, Such as industrial-grade pump applications. In addition to the load requirements, engineers must also choose the appropriate circuit. Appliance Switches contacts must be normally open NO and normally closed NC. For NO-type contacts, usually under the touch There is no current between the points when the switch action, the contact is closed, the circuit is connected.For NC-type contacts, usually between the contacts through the current through the switch action, the contacts open, the circuit is broken. condition
The environmental requirements have a great impact on the choice of Appliance Switches. You need to select a sealed switch with a wide operating temperature range. Highly reliable Appliance Switches can operate at temperatures between -65 ° F (-54 ° C) and 350 ° F (177 ° C), especially in highly reliable and critical applications such as industrial control, medical equipment and the like. The environmental conditions of the application include the pollutants in the air that may enter the switch, the liquid in which the Appliance Switches is located, and the operating temperature switch requirements. For harsh environmental conditions. Can easily deal with a variety of applications. At the same time, also pay attention to the switch protection level should be at least IP67 level, to prevent liquid intrusion. This eliminates the need for a lot of time to design a housing that achieves the same degree of protection. Clear working life requirements
The reliability of Appliance Switches is critical. Do you need to specify how many times the electrical and mechanical operating life is required for an application? Different Appliance Switches have different contact materials, housings and terminals. Electrical failure before the maximum load in the operation of 50,000 to 100,000 times. As for the different quality of Appliance Switches between the subtle price differences, to meet the different applications of electrical and mechanical life needs. A highly reliable microswitch can operate from 10 million to 20 million times before mechanical failure. You need to take into account the total cost of use. Because you do not just pay for the switch, but also to ensure that the Appliance Switches for a long time trouble-free operation pay. In many cases, the additional costs required to use more reliable switches are offset by lower warranty costs during use.
Inspection agency certification requires the selection of Appliance Switches that meet a variety of international electrical requirements to help you simplify product design for different areas. Some of the 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. When the micro switch is selected. Such as dimensions, load requirements, working environment and reliability, you need to consider multiple factors. So it is necessary to understand the actual application requirements: the size of the switch? What is the required power rating? No for low voltage applications? Is the Appliance Switches required to be sealed? Does the switch need extreme temperatures? Does it require certification from international organizations? Is it a critical application? Once you have figured out these problems, it is much easier to choose an Appliance Switches for the application