High sensitivity 4 pole vacuum ac contactor for device protection has economical price. 100 times making capacity, 25 times breaking capacity, 3000000 times long electrical life.
Specification
Model | CHN-CKJ5-400-1140 |
Rated voltage | Main circuit | 1140V |
Control circuit (AC) | 36V, 110V, 220V, 380V |
Rated current | 400A |
Main contact parameter | Open distance | 2±0.5 mm |
Over distance | >1.5 mm |
Final power | 120±20 N |
Power frequency withstand voltage | Main circuit | 4200V |
Auxiliary circuit | 2500V |
Control circuit | 2000V |
Phase | 3 |
Frequency | AC 50Hz or 60Hz |
Making capacity | 10 le 100 times |
Breaking capacity | 8 le 25 times |
Max making & breaking capacity (A) | 4500 3 times |
Electric life | AC3 | 600000 times |
AC4 | 20000 times |
Electrical life | 3000000 times |
Function | Device protection |
Electricity type | Vacuum |
Ambient temperature | -25℃ to 40℃ |
Packaging details | Standard package or according to customer's requirements |
Weight | 11.3kg |
AC vacuum contactor outline and installation dimension (Unit: mm)

Tips: Structural characteristics of ac vacuum contactor
- The ac vacuum contactor is composed of a magnetic system, a contact system, and an auxiliary contact.
- The ac vacuum contactor is a three-dimensional structure, the upper part is the contact system, and the lower part is the electromagnetic system.
- The magnetic system of the ac vacuum contactor is composed of a coil, an iron core and a rectifier, and is installed in a base made of cast aluminum alloy or DMC.
- The ac vacuum contactor is a plane structure, the left part is the contact system, and the right part is the electromagnetic system.
- The contact system of the ac vacuum contactor is composed of moving and static contacts and a vacuum interrupter, which is installed in a base made of insulating materials.
- The vacuum interrupter adopts new contact materials for one-time sealing and discharge, and the electromagnetic system adopts DC double coils.
36V/ 110V/ 220V/ 380V coil voltage ac vacuum contactor for sale online is three phase ac contactor. Its main circuit rated voltage is 1140 volt and the rated current is 400 A. The contactor is designed for frequency starting and controlling AC motor in the power system with AC 50Hz - 60Hz. 2±0.5 mm open distance, 120±20 N final power.