Several wiring methods for AC contactors

AC contactor wiring: AC contactor often adopts three arc extinguishing methods: double-fracture electric arc extinguishing, longitudinal seam arc extinguishing and grid arc extinguishing. It is used to eliminate the arc generated by the dynamic and static contacts in the process of splitting and closing. Contactors with a capacity of more than 10 A have arc extinguishing devices.

AC contactors also have auxiliary components such as reaction springs, buffer springs, contact pressure springs, transmission mechanisms, bases and binding posts. The working principle of the extended data AC contactor: it uses electromagnetic force and spring elastic force to cooperate to realize the connection and breaking of the contact.

AC contactors have two working states: power-loss state (release state) and power-up state (action state). When the suction coil is energized, the static iron core generates electromagnetic attraction, the armature is sucked, and the connecting rod connected with the armature drives the contact action, so that the normally closed contact breaker is in an energized state; When the suction coil is de-energized, the electromagnetic attraction disappears, the armature is reopened, the normally open contact is closed, the position spring is released, and all the contacts are reset accordingly, and the contactor is in a state of power loss.

Generally, the three-phase contactor has a total of 8 points, three inputs, three outputs, and two control points. The output and input are corresponding, and it is easy to see. If you want to add self-locking, you also need to connect the wire from one of the terminals at the output point to the control point.

Once you know the principle, you should figure out the contacts of the external power supply, that is, the two contacts of the coil, which are generally at the lower part of the contactor, and on each side. The other inputs and outputs are generally in the upper part, and you can see it at a glance. Also pay attention to the voltage of the external power supply (220V or 380V), which is generally marked as yes.

And pay attention to whether the contact point is normally closed or normally open. If there is a self-locking control, it is enough to sort out the line according to the principle.

The sequential connection of the simple connection circuit, the main circuit: L1 on the contactor from the three outlets of the empty opening, T1 on the outlet, and then to the motor. Control the circuit, see what the voltage of your contactor coil is, select the control voltage, and we'll talk about it later.

Now you use two wires to connect to both ends of the stop button, these two wires, one is marked as 1 first, the other is marked 2 to the side of the start button, and the other side of the start button is marked L1 to be connected to the contactor coil A1 wiring Ruizi.

Next, to connect the self-locking wire on the contactor, you lead one out of the line marked L3 to the stop terminal of the contactor, this mark is also 2, and the contactor A2 and the contactor are connected with a wire to start together.

Hello dear, the wiring method of AC contactor, here are some common wiring methods:1The wiring method of the single-phase AC contactor is as follows:

Connect the two phase wires of L1 and L2 of the AC power supply to the two hail wires of the contactor A1 and A2 respectively on the coil terminals, and then pass L1 and L2 respectively through the load (such as lamps, motors, etc.) and then return to the two neutral wires of the AC power supply. 2.The source of the three-phase AC contactor is as follows:

Connect the three-phase wires L1, L2 and L3 of the AC power supply to the three coil terminals of the contactor A1, B1 and C1 respectively, then connect the three neutral wires back to the AC power supply respectively, and then return L1, L2 and L3 to the corresponding neutral line of the AC power supply after passing through the load respectively. No matter which method is used, it is necessary to pay attention to whether the wiring is correct, especially for three-phase contactors, and confirm the phase sequence and line connection method of the AC power supply before wiring.

The wiring methods of the contactor are generally as follows:1Direct Control Line Method:

The line that controls the power supply (usually the low-voltage line) affects the control line of the contactor and wants to be connected, so the switch of the contactor is controlled by this method. 2.Self-locking method:

One contact of the contactor controls its own circuit, and the other contact controls the external load circuit, so that the contactor can be self-locked. 3.Double-press chain button connection:

The contactor can use two buttons to control its switch. When one of the buttons of the contactor is pressed, the contactor turns on, and when the other button is pressed, the contactor closes. 4.

External feedback connection: The contactor can be controlled by an external device (e.g. current transformer). A current transformer is added to the load circuit and connected in series to the contactor, so that the circuit status can be fed back in real time.

Note: Be sure to follow the prescribed wiring method when wiring to avoid malfunction, damage or even danger to the equipment. For the specific wiring method, please refer to the instruction manual of the contactor.

AC contactors can help circuits turn on and off the power supply, and are commonly used equipment in industrial automatic lead removal, power control and other fields. The following is the wiring method of the AC contactor:1

Please turn off the power before wiring: Before wiring the brigade lead, please turn off the power first to ensure safety. 2.

Determine the terminal points: First, you need to determine the function of each terminal point, and then determine the correct wiring sequence. 3.

Connect the power cable: Connect the power cord to the L1 and L2 terminals of the AC contactor respectively, this is the most important step in wiring, pay special attention to whether the polarity of the connection is correct. 4.

Connect the output cable: Connect the output cable to the T1 and T2 terminal points of the AC contactor, and pay attention to the correspondence between the wire number and the purpose when connecting. 5.

Connecting the Control Cable: Connecting the control extrusion wire to the A1 and A2 terminals of the AC contactor is a critical step in controlling the AC contactor and requires ensuring that the control line is of the correct polarity. 6.

Start the circuit: After completing the above steps, you can start the circuit with power on to check whether the AC contactor is working normally. When wiring, it is necessary to accurately understand the role and function of each terminal point, and follow the correct wiring sequence and connection method to ensure the normal operation and safe operation of the circuit.

Hello, I am glad to answer for you: wiring method of AC contactor 1The AC contactor is divided into two parts: "main line" and "control line", and there are several pairs of "normally closed" and "normally open".

2.The main line that needs to be connected and disconnected is connected to the input end and output end of the AC contactor respectively, and the suction and disconnection of the electromagnet of the AC contactor are used to achieve the purpose of the switch 3The key is to connect the "control circuit", the control circuit is made of magnet wire wrapping, normally closed, normally open, start button, stop button, if necessary, you can also access the time relay, and connect these parts in series to the power supply circuit.

It should be noted that the two ends of the start button must be connected in parallel "normally open" to achieve the purpose of "self-locking". 4.At the same time, the normally closed and normally open AC contactor of A can also be connected to the control circuit with the normally closed and normally open of the AC contactor B to achieve the purpose of preventing short circuit.

It can be observed that the AC contactor has 8 points, 3 channels of transmission and 3 outputs, and there are also two control points, and the wire is connected from one terminal of the output point to the control point. 2.First prepare three wires, and connect these three power wires from L1, L2, and L3 terminals of the contactor respectively, and then connect them from T1, T2, and T3 terminals, so that a main circuit is formed.

3.Next, a wire is drawn from L1 to be connected to one end of the contact, and then the other end of the button is activated, and from this end the pants are drawn out of the pants to connect with coils A1, A2, L2 and L3.