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AC Contactor More Efficient And Flexible Use
Aug 10, 2017

AC contactor using the main contact to open and close the circuit, with auxiliary contacts to control the implementation of instructions.

The main contact is generally only normally open contacts, and auxiliary contacts often have two pairs of normally open and normally closed contact, small contactor is often used as an intermediate relay with the main circuit.

AC contactor contacts, made of silver tungsten alloy, with good conductivity and high temperature ablation.

AC contactor action power from the AC electromagnet, electromagnet by two "mountain" shaped silicon steel sheet stacked, one of the fixed, put on the coil in the above, the working voltage has a variety of options. In order to stabilize the magnetic force, the suction surface of the core, plus the short circuit. The AC contactor relies on a spring return after power failure.

The other half is the activities of the core, the structure and fixed iron core, to drive the main contacts and auxiliary joints of the short.

20 amperes above the contactor with an arc extinguishing cover, the use of breaking the circuit when the electromagnetic force generated, quickly pull off the arc to protect the contacts.

AC contactor is made as a whole, shape and performance are constantly improving, but the function is always the same. No matter what extent the development of technology, ordinary AC contactor still has its important position.

AC contactor using the main contact to open and close the circuit, with auxiliary contacts to control the implementation of instructions.

The main contact is generally only normally open contacts, and auxiliary contacts often have two pairs of normally open and normally closed contact, small contactor is often used as an intermediate relay with the main circuit.

AC contactor is an intermediate control element, can be frequent through, off the line to a small current control of high current. With the thermal relay used together, but also on the load equipment to play a certain role in overload protection. Compared with the manual sub-closing circuit, AC contactor is more efficient, can be used flexibly, and at the same time, together with multiple load lines, as well as self-locking function, through the manual short after the pull, you can enter from Lock state continues to work.

AC contactors are the most common low-voltage control appliances for power drag and automatic control systems. As an actuator, for connecting, breaking the line, or frequent control of the motor and other equipment to run. By the moving, static main contact, arc cover, moving, static core, auxiliary contacts and bracket shell and other components. After the electromagnetic coil is energized, the movable iron core is sucked under the action of electromagnetic force, and the movable contact is brought into contact with the stationary contact directly or through the lever transmission. Electromagnetic coil power, the moving core in the return under the action of the spring automatically return, commonly known as the release, contact separately, circuit breaking.

AC contactor is an intermediate control element, the advantage is that frequent pass, off the line, with a small current control of high current. With the thermal relay work can also play a certain load on the load protection role. Because it is by the electromagnetic field suction through, broken work, relative to the manual hand, closing circuit, it is more efficient, more flexible use, you can also points, together with multiple load lines, as well as self-locking function, by manual short After the pull together, you can enter the self-locking state of continuous work.