Siemens Contractor Models, Device Function & Working Principle

1. Siemens Contractor Models, Device Function & Working Principle Siemens Contactor Models Contactors are divided into alternating current contactors (voltage AC) and direct current contactors (voltage DC), which are used in power, power distribution and power consumption occasions. The contactor broadly refers to an electrical appliance that uses a current flowing through a coil to generate a magnetic field in industrial electricity to close the contacts to achieve load control. Device function: In electrical engineering, because it can quickly cut off the main circuit of AC and DC and can frequently turn on and off the large current control (up to 800A) circuit, it is often used as a control object of electric motors, and can also be used to control factories For electrical loads such as equipment, electric heaters, working mother machines and various power units, the contactor can not only connect and cut off the circuit, but also have a low voltage release protection. The contactor has a large control capacity and is suitable for frequent operation and remote control. It is one of the important components in the automatic control system. In industrial electrical, there are many types of contactors, and the working current ranges from 5A- 1000A, and their uses are quite extensive. Working principle: The working principle of the contactor is: when the contactor coil is energized, the coil current will generate a magnetic field, and the generated magnetic field causes the static iron core to generate electromagnetic attraction to attract the moving iron core, and drive the AC contactor to act, the normally closed contact is opened, The normally open contact is closed and the two are linked. When the coil is de-energized, the electromagnetic suction force disappears, the armature is released under the action of the release spring, the contact is restored, the normally open contact is opened, and the normally closed contact is closed. The working principle of the DC contactor is similar to that of the temperature switch. Technological development: The AC contactor is made as a whole, and its shape and performance are constantly improving, but its function remains unchanged. Regardless of the degree of technological development, ordinary AC contactors still have their important position. Air-type electromagnetic contactor (English: Magnetic Contactor): It is mainly composed of contact system, electromagnetic operating system, bracket, auxiliary contact and shell (or chassis). Because the coil of the AC electromagnetic contactor is generally powered by an AC power supply, after the contactor is excited, there will usually be a high decibel noise, which is also the characteristic of the electromagnetic contactor.

2. Since the 1980s, countries have studied the silent and power saving of AC contactor electromagnets. One of the basic feasible schemes is to step down the AC power supply with a transformer and then convert it to DC power supply through an internal rectifier. However, this complex control method does rarely. Vacuum contactor: The vacuum contactor is a contactor that uses a vacuum demagnetization chamber for the contact system. Semiconductor contactor: A semiconductor contactor is a contactor that completes current operation by changing the on and off states of a circuit loop. Permanent magnet contactor: The permanent magnet AC contactor is a micro power contactor formed by replacing the traditional electromagnet drive mechanism with a permanent magnet drive mechanism by using the principle of magnetic pole repulsion. How to choose Siemens DC and AC contactors First of all, the contactor is able to quickly turn on or off the AC and DC main circuits. Secondly, we need to consider which type of Siemens contactor to choose according to the type of the main circuit current. When switching AC is used, then the AC contactor can be used. Conversely, if switching DC is used, the DC contactor can be used. Visit https://aic.in/contactors-mpcb/ for cable tray, starters for motors, cable glands, cat6 cable, patch cord, surge arrester, frls cable, cat6 cable price, shielded cable, motor starter single phase, siemens contactor, cat5e cable, flexible cable, control cable, siemens mcb, instrumentation cable, ethernet cable price, cat6 cable price 100 meter, cable gland single compression, submarine cable india, abb mcb, industrial switch, heat cable, siemens starter.