CKJ5(Y) series low-pressure vacuum contactors
The CKJ5 series vacuum contactors are suitable for AC 50-60Hz power network systems with a main circuit rated voltage below 1.6kV and rated currents from 160A, 250A, 400A, 630A, 800A, 1000A, and 1250A. They are suitable for long-distance connection and disconnection, frequent starting and control of AC motors, transformers, and capacitor banks. Available in both permanent magnet and electrically held types. They offer stable and reliable performance, require no maintenance, have a long service life, and offer high cost-effectiveness. Permanent magnet vacuum contactors are more energy-efficient, with zero power consumption in secondary control after closing, making them the preferred choice for energy-saving control switches. They are widely used and highly regarded in the market.
Vacuum Interruption Technology: The main contacts are sealed within the vacuum interrupter chamber, preventing oxidation, resulting in a short arcing time, high insulation strength, and ensuring long service life and safe operation.
Compact Structure: CKJ5 typically employs a three-dimensional, top-bottom structure (contact system on top, electromagnetic system below), saving installation space.
Low Maintenance: Because the main contacts operate in a vacuum, they are wear-resistant, have a long service life, and experience fewer malfunctions.
Diverse Installation Options: 630A and above typically feature a planar structure with a clear overall layout, facilitating maintenance.
| Tech. parameters | Model | 160、250、400/1.14~1.6KV | 630、800/1.14~1.6KV | 1000、1250/1.14~1.6KV |
| Rated voltage of the main circuit | (V) | 1140~1600 | 1140~160C | 1140~1600 |
| Rated current of the main circuit | (A) | 160、250、400 | 630、800 | 1000、1250 |
| Main circuit making capacity | (A/100 times) | 1600、2500、4000 | 6300 | 8000、10000 |
| Main circuit switching capability | (A/10 times) | 4000 | 5000 | 6000、8000 |
| Ultimate breaking capacity | (A/3 times) | 5000 | 6300 | 8000、10000 |
| Electrical endurance AC3 | (10,000 times) | 30 | 30 | 30 |
| Mechanical life | (10,000 times) | 100 | 100 | 100 |
| Rated operating frequency AC3 | ( times/h) | 300 | 300 | 300 |
| Clearance between open contacts | (mm | 2±0.2 | 2±0.2 | 2±0.2 |
| Overtravel | (mm) | 1.0±0.2 | 1.0±0.2 | 1.0±0.2 |
| Secondary control voltage | (V) | ACorDC:36/110/220/380or customized | ||
Normal Operating and Installation Conditions
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Chennuo Electric Technology Group Co., Ltd
Tel：+86 19303791130
Email：sales@chennuojt.com
Add：No. 9 Duyu Street, Luolong District, Luoyang City, Henan Province, China
