CJX2 series AC contactor (hereinafter referred to asContactor）Suitable for circuits with AC 50Hz or 60Hz, voltage up to 690V, and current up to 95A, it is used for remote connection and disconnection of circuits, frequent starting, and control of AC motors. The contactor can also be equipped with building block auxiliary contact groups, air delay heads, mechanical interlocking mechanisms, and other accessories to form delay contactors, reversible contactors, star delta starters, and can be directly plugged and installed with thermal relays to form electric starters.

1、 The use of CJX2 AC contactorThe line method is as follows:

Generally, a three-phase contactor has a total of 8 points, three inputs, three outputs, and two control points. The output and input are corresponding and can be easily seen. If self-locking is to be added, the wire needs to be connected from one terminal of the output point to the control point.

Firstly, one should understand the principle of AC contactors. It uses an external power source to apply to the coil, generating an electromagnetic field. When powered on, the contact point will disconnect when the power is cut off.

After understanding the principle, clarify the contacts of the external power supply, which are the two contacts of the coil, usually located at the bottom of the contactor and on each side. The other inputs and outputs are usually located in the upper part, which is obvious at a glance. Also pay attention to the voltage of the external power supply (220V or 380V), which is usually indicated. And pay attention to whether the contact point is normally closed or normally open. If there is a self-locking control, just follow the principle to organize the circuit.

When the coil is energized, the static iron core generates electromagnetic attraction, which attracts the moving iron core. As the contact system is linked with the moving iron core, the moving iron core drives three moving contact pieces to run simultaneously, closing the contacts and connecting the power supply. When the coil is powered off, the suction force disappears, and the linkage part of the moving iron core separates by the reaction force of the spring, causing the main contact to disconnect and cutting off the power supply.

2、 Precautions for using CJX2 AC contactor：

The ambient air temperature ranges from -5 ℃ to+40 ℃, with an average value not exceeding+35 ℃ within 24 hours.

Altitude: not exceeding 2000m.

Atmospheric conditions: The relative temperature of the atmosphere does not exceed 50% at+40 ℃, and the relative humidity can be relatively high at lower temperatures. The average lowest temperature of the wettest month does not exceed+25 ℃, and the average maximum relative humidity of that month does not exceed 90%. And consider condensation on the product due to temperature changes.

Pollution level: Level 3.

Installation category: Class III.

Installation conditions: The inclination angle between the installation surface and the vertical surface shall not exceed ± 5 °.

Shock and vibration: The product should be installed and used in a place without significant shaking, shock, and vibration.

Installation method: In addition to installing with screws, contactors can also be installed with 35mm standard card rails. Communication operation 40-95 can be installed with 35mm or 75mm card rails.

There are A1 and A2 terminals under the contactor, which are used for the working voltage of the wiring coil. The L1, L2, L3 three-phase incoming lines and T1, T2, T3 three-phase outgoing lines are connected to the controlled electrical equipment (such as motors). The connection method of other secondary circuits depends on how you need to control them.