2.ABB air switch: ABB is a global top 500 enterprise, which was formed by the merger of Swedish Arcia (ASEA) company and Swiss BBC Brown Boveri company in 1988, and it is a leading manufacturer in the field of electric power and automation technology.
3. Zheng Tai air switch: Zhejiang Zheng Tai Electric Appliance Co., Ltd. is a manufacturer of low-voltage electrical appliances made in China. Products sell well in more than 90 countries and regions around the world. Zheng Tai air switch is of high quality and reasonable price.
4. Siemens air switch: Siemens is a pioneer in the field of motor and electronics and a global industry. Siemens air switch is famous for its outstanding technical achievements, unremitting pursuit of innovation, excellent quality and reliable reliability.
5. China Delixi air switch: China Delixi continuously provides products and services to customers, which not only successfully helps the flying of Shenzhou and Chang 'e, but also provides services for civilian products.
Air switch, also known as air switch, is a kind of circuit breaker. It is a switch that will automatically turn off as long as the current in the circuit exceeds the rated current. Air switch is a very important electrical appliance in low-voltage distribution network and electric drive system, which integrates control and various protection functions. It can not only contact and break the circuit, but also protect the short circuit, serious overload and undervoltage of the circuit or electrical equipment, and can also be used for motors that are not started frequently.
Main functions: Under normal circumstances, the armature of the overcurrent release is released; In case of serious overload or short circuit fault, the coil connected in series with the main circuit will generate strong electromagnetic attraction, which will attract the armature downwards and push the unlocking hook to disconnect the main contact.
The working principle of undervoltage release is just the opposite. When the voltage is normal, electromagnetic attraction attracts the armature and the main contact is closed. Once the voltage drops seriously or the power is cut off, the armature is released and the main contact is disconnected. When the power supply voltage returns to normal, it must be switched on again to work, thus realizing voltage loss protection.
References:
Air switch-Baidu encyclopedia