Product features: 1. The main circuit and vacuum switch tube are products from well-known domestic manufacturers. The technology is mature, the quality is reliable, and the market reputation is good. ·The 630A current level adopts the double moving end connection of the end face and the conductive clip, which has small resistance, low temperature rise and more reliable. ·The conductive bar is beautiful and durable, and the cross-sectional area is better than similar products. The upper end of the fixed-end conductive bar is equipped with a reinforcing plate to strengthen the connection strength of the copper bar and the vacuum tube, and prevent the harm caused by the deformation of the copper bar. 2. Electromagnetic system: It adopts a closed structure and is equipped with a heat dissipation window to become an electrical product with a complete structure, which fully meets the use requirements such as temperature rise, and can prevent the inhalation of dust and ferromagnetic substances, making it safe to use. It is a unique structure among similar products. ·Optimize the action structure, reduce the coil starting power and holding power, so the temperature rise is low, the service life is long, and it is more reliable. ·A limit buffer is set at the opening limit position of the moving armature to eliminate the hidden danger of accidents caused by the excessive amplitude of the opening rebound. At the same time, the head of the auxiliary switch also uses a buffer to reduce the impact force of the action and improve the reliability of the auxiliary switch. 3. Action structure : The shaft is supported flexibly, the force is not stuck, and the axial movement is small, which improves the action performance and consistency. ·Reasonable action mechanism to ensure the coaxiality of the axial movement of the vacuum tube moving conductive rod. Improved contactor performance and reliability. Make the three-phase synchronization and bounce index better than similar products. ·Strengthen the contact pressure of the main contact, improve the electrical performance and action characteristics. Indicators are better than similar products. ·The mechanical holding device is self-contained, with reasonable structure and more reliable use. 4. Easy to use and maintain . The terminals of the secondary circuit have function signs, and the wiring is distinguished by fixed colors to prevent wiring errors and facilitate the inspection of wiring. The terminal block can be installed on the front or back of the machine according to user needs. The number of auxiliary contacts can be used according to the requirements of the use of environmental conditions: 1. The ambient air temperature is not higher than +40 ℃, not lower than -10 ℃. 2. The altitude of the installation site should not exceed 2000 meters. 3. Air relative humidity, the monthly average maximum relative humidity of the wettest month is 90%, the monthly average minimum temperature is 25 ℃, and the condensation on the surface of the product due to humidity changes is considered. 4. There is no obvious shaking and shock vibration occasions. 5. There is no gas and dust (including conductive dust) that can corrode insulation in the place. 6. Places without rain and snow.
