Contactor technology development
2021-04-19
The AC contactor is made in one piece, and the shape and performance are constantly improving, but the function is always the same.
Contactors (Fig. 4) Regardless of the extent to which the technology has developed, ordinary AC contactors still have an important position.
Air-type electromagnetic contactor (English: Magnetic Contactor): mainly consists of contact system, electromagnetic operating system, bracket, auxiliary contact and outer casing (or chassis).
Because the coil of the AC electromagnetic contactor is generally powered by an AC power source, after the contactor is excited, there is usually a high-decibel "squeaky" noise, which is also a feature of the electromagnetic contactor.
After the 1980s, countries studied the silent and power-saving of AC contactor electromagnets. One of the basic feasible solutions is to reduce the AC power supply with a transformer and then convert it into a DC power supply through an internal rectifier, but this complex control method Not much to see.
Vacuum contactor: A vacuum contactor is a contactor that uses a vacuum degaussing chamber.
Semiconductor contactor: A semiconductor contactor is a contactor that performs current operation by changing the conduction state and the open circuit state of a circuit loop.
Permanent Magnet contactor: The permanent magnet AC contactor is a micro-power contactor formed by the principle of the same polarity repulsive and opposite-phase attraction of the magnetic pole, and the permanent magnet drive mechanism replaces the traditional electromagnet drive mechanism.
AC Contactor switch mainly used for making or breaking circuit at a long distance, suitable for controlling starting\stopping\reversing of AC motor. AC Contactor of korlen conforms to the requirement of IEC60947-4-1& GB14048.4 standards.
Except AC Contactor, there are many different types of low voltage electric appliances, such as Thermal Relay,Manual Motor Startor ,led light, Circuit Breaker, etc.
AC Contactor, Magnetic Contactor, Wafer Style Valve
U Polemag Electronics & Technology Co., Ltd. http://www.zjmannualmotorstarter.com