Contactors are divided into alternating current contactors (voltage AC) and direct current contactors (voltage DC), which are used in electric power, power distribution and power consumption occasions. In a broad sense, a contactor refers to an electrical appliance that uses a coil to flow through a current to generate a magnetic field to close the contacts in order to control the load in industrial electricity.
In electrical engineering, because it can quickly cut off the main circuit of AC and DC and can frequently connect and control the circuit with high current (up to 800A), it is often used in electric motors as control objects, and can also be used to control factory equipment. For electrical loads such as electric heaters, working mother machines and various power units, contactors can not only connect and cut off circuits, but also have low-voltage release protection. The contactor has a large control capacity, is suitable for frequent operation and long-distance control, and 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 to 1000A, and their uses are quite extensive.
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 will make the static iron core generate electromagnetic attraction to attract the moving iron core, and drive the AC contactor point to move, the normally closed contact is disconnected, The normally open contact is closed, and the two are linked. When the coil is powered off, the electromagnetic suction force disappears, and the armature is released under the action of the release spring, so that the contacts are restored, the normally open contacts are disconnected, and the normally closed contacts are closed. The working principle of a DC contactor is somewhat similar to that of a temperature switch.
CJX2 series AC contactor(hereinafter to be referred as contactor), it mainly applies to the circuitof AC 50Hz/60Hz, and rated insulation voltage 660V. Combined with proper thermal overloadrelay can protect load circuit. Contactor can fre-quently start and control AC electromotor.This product conforms to GB 14048 4. IEC60947- 4-1 standard.
Has advanced structure, small size, light weight, low power consumption, high life, safety and reliability, technical performance characteristics.. can be used to install modular mounting auxiliary contact group, attachments, etc. combined into a variety of thermal relay derived products.a , In addition to the contactor mounting screws, but also with a standard 35mm rail mounting.. contactor core and the contact with the mounting surface parallel to the direction of motion.
· Amdient air temperature:-5℃~+40℃, the average value should not exceed+35℃ within 24 hours.
· Elevation: At most 2000m.
· Atmospheric conditions:When the temperature at 40, the relative humidity of atomsphere should de at the most 50%. When at relatively low thmperatures, it could have higher relative humidity. Monthly maximum relative humidity could be not more than 90%. Special measures should be taken due to occurrence of dews.
· Class of pollution:Class 3
· mstallation category.Ⅲ
· Installation conditions: Degree of inclination between fitting surface and verical surface should not exceed ±5°
· Impact shock: Product should be installed and used in the place where often shakes and impacts.