Air switch working principle air switch price
The air switch is the circuit breaker in our lives. It is a device that can make, break, and carry the rated working current in the circuit. It is a device that can effectively reduce the occurrence of thermal power accidents. Now many netizens choose to use it Safety. So what is the working principle of the air switch ? Is the air switch expensive? Let's take a look with the editor.
Working principle of air switch
The air switch is used for circuit protection. Once a short circuit accident occurs, the circuit will be disconnected. Because air is used as the arc extinguishing medium, it is called an air switch.
The internal structure of the air switch utilizes the thermal expansion and bending of the bimetal to touch the lever to make the circuit breaker trip to protect the overload. There will be a certain time difference during overload protection. When a short circuit occurs, the current flows through the induction coil and generates a strong magnetic field, pushing the lever to quickly trip the circuit breaker.
According to the different protection functions, the trip unit can be divided into over-current trip unit and loss-of-voltage trip unit. There are three types of trip modes: thermal, electromagnetic and compound trip.
When the circuit is generally overloaded, although the overload current cannot make the electromagnetic release act, it can cause the heat element to generate a certain amount of heat, which causes the bimetal to heat up and bend, and push the lever to disengage the hook and the lock, and the main contact Head off, cut off the power.
When the circuit is short-circuited or severely overloaded, the short-circuit current exceeds the instantaneous tripping setting current value, and the electromagnetic tripper generates enough suction to attract the armature and strike the lever, causing the hook to rotate upward around the shaft base and release the lock Under the action of the reaction spring, the lock will break the three pairs of main contacts and cut off the power supply.
The tripping mechanism of the switch is a set of connecting rod devices. When the main contact is closed by the operating mechanism, it is locked in the closing position by the hook. If a fault occurs in the circuit, the related trip unit will act to disengage the lock hook in the trip mechanism, so the main contact is quickly broken under the action of the release spring.
The larger air switch also has overload protection, that is, the bimetallic sheet is generally used. When the circuit overload reaches a certain time, the heat will deform the bimetallic sheet and cause the tripping unit to trip, thereby disconnecting the circuit search.
Air switch price
Air switches have different brands and different applications, so the prices are different. The following is the reference price of some air switches organized by the editor.
Siemens air switch green environmental protection series 1P20A single input single output 5SJ6120-7CR: 38 yuan
Schneider Air Switch C65N 2P C63A: 229 yuan
Delixi air switch CDB6S2P32A: 39 yuan
Panasonic Air Switch BDE-63C Series 2P63A: 193.8 yuan
Zhengtai Air Switch NBE7LE 2P 32A: 87 yuan
The above is the introduction to the working principle of the air switch and the price of the air switch . In view of the reliability of the air switch, many people choose it. You can choose a better brand when buying, and pay attention to installation and maintenance. If you have any questions, you can consult the seller. I hope the above information is helpful to everyone. If you have any questions, please leave a message at the bottom of the page, we will answer you as soon as possible. Thank you for your support of this website, and related articles have been published one after another, please continue to pay attention.
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