①. Energy: Closing the traditional contactor coil is energized holding is by closing the electromagnetic force to overcome the opening spring to achieve, once the current becomes small so that the electromagnetic force generated is insufficient to overcome the reaction force of the spring, it can not maintain close contacts brake status, so closing the traditional AC contactor coil holding must rely on electricity to maintain continuous, and this current from tens to thousands mA. The permanent magnet AC contactor close maintain rely on the permanent magnetic force, without the need to generate an electromagnetic coil current through the closing force to maintain only the electronic module 0.8mA-1.5mA operating current, thus, to maximize savings power, energy-saving rate of more than 99.8%. . ② no noise: the traditional AC contactor coil is energized closing maintained so that silicon is produced by the electromagnetic force, so that the movement silicon pull, when the grid voltage is insufficient or movement silicon surface irregularities or dust, foreign matter, etc., noise is produced. The permanent magnet AC contactor close maintain permanent magnetic force is to rely on to maintain, so there will be no noise generated. ③ no temperature: conventional contact relies on the electromagnetic coil is energized to generate enough force to hold the pull, the coil is composed of a resistor and an inductor, a current is bound to the long-term heating, on the other hand, the magnetic flux through the core had also generate heat, heat the two contacts together in the chamber, often the contactor coil burned, while reducing heat capacity of the main contacts. The permanent magnet permanent magnet AC contactor is to rely on force to maintain, without maintaining the coil, naturally there is no temperature rise. . ④ contacts without chatter: traditional AC contactor coil is energized by retention is achieved, retention force with current, relevant magnetic gap, when the voltage fluctuations in the closing and opening a critical state, in a similar fit like contactors sub-state will continue to flutter, causing contact welding or burning, leaving the motor burned out. The permanent magnet AC contactor retention, totally dependent on the permanent magnetic force to achieve a complete pull, voltage fluctuations will not affect the permanent magnetic force, either in pull-state, or is in the open state, not in the middle of the state, Therefore, the possibility will not tremble and burned the main contacts, burn out the motor is greatly reduced. ⑤ long life, high reliability: the life and reliability of the contactor coil and contacts primarily by life decisions. Because of the traditional AC contactor coil and core work when it will heat, especially voltage, easily lead to heat when a current, the magnetic gap increases the coil burned, while the permanent magnet AC contactor coil may be burned does not exist. Contacts ablation mainly by opening arc generated when the result of the closing. Compared with traditional contactors, the role of the permanent magnet AC contactor in the closing, in addition to the same electromagnetic force, but also with permanent force, thus closing speed is much faster than the traditional exchanges and contacts, after testing, permanent magnet AC contactor closing time is generally less than 20ms, while the traditional contactor closing speed is generally about 60ms. When opening, permanent magnet AC contactor opening spring in addition to the role, but also has the effect of magnetic repulsion force, these two effects makes opening speed faster than the traditional contactor lot, after testing, permanent magnet AC contactor points Gate time is generally less than 25ms, while the traditional contactor opening speed is generally more than 80ms. In addition, the heating coil and the core will reduce the capacity of the main contacts, suction voltage fluctuations caused by insufficient or tremor causes fever traditional contactor main contacts, arcing or welding. Permanent magnet AC contactor contact life compared with conventional AC contactor contacts, life under the same conditions increased 3-5 fold. ⑥ anti-electromagnetic interference: permanent magnet AC contactor using a magnetic circuit is completely sealed ,, in the course will not be subject to external electromagnetic interference, nor will the external electromagnetic interference. . ⑦ intelligent anti Akira power: control electronics module controls the release voltage value can be delayed by a certain time and then send the reverse pulse current to achieve low-voltage power-off delay time release or release to motor control from the grid voltage fluctuations (Akira power) and jump stop, so as to maintain stable production system. Especially the device type continuous production enterprises can reduce venting and resume production of electricity, steam, natural gas consumption and labor costs, equipment damage repairs and the like.