Capacitive contactless switch is a kind of equipment used for capacitive load on/off control in low-voltage 400V system. It is composed of high-power anti-parallel thyristor module, photoelectric isolation circuit, trigger circuit, protection circuit, heat dissipation device, etc. The switch works without noise, allows frequent switching, simple installation and wiring, especially suitable for supporting fast switching SVC low voltage dynamic reactive power compensation device use. The rated voltage of the capacitive contactless switch is 450V and below in the low voltage system, and the rated frequency is 50Hz. It has the characteristics of no inrush current, no overvoltage, and no noise during operation. These characteristics make it particularly suitable for the control of capacitive load in the power system.
In addition, contactless switch has a wide range of applications in smart home, consumer electronics and other fields. They work based on non-contact detection technology, and compared with traditional mechanical switches, contactless switches have the advantages of fast response, long life and beautiful appearance. Because there are no mechanical contact parts, contactless switches are relatively more durable and reliable. In the field of smart home, contactless switches can achieve lighting control, electrical switch and other functions; In the automotive field, contactless switches are widely used in doors, Windows and seat adjustment; In the field of medical equipment, contactless switches can be applied to operating rooms, monitors and other equipment, reducing the impact of human operation on patients; In the field of security facilities, contactless switches can be used in alarm devices, smart locks, etc., to enhance safety and convenient
To sum up, the capacitive contactless switch not only has significant advantages in technology, but also has a wide range of applications and important roles in many fields
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