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Utilizing vacuum interrupter technology, these contactors offer exceptional arc suppression, minimal maintenance, and a long service life, making them ideal for applications where downtime is costly. Available in ratings from 6kV to 10kV, the GKJ5 series ensures safe and efficient power switching in industrial and utility environments.
Vacuum Interrupter Technology: The hermetically sealed vacuum chamber extinguishes arcs rapidly, reducing contact erosion and enabling up to 100,000 mechanical operations. This technology eliminates the need for arc quenching gases or liquids, enhancing safety and environmental friendliness.
High Current Capacity: Capable of handling rated currents up to 630A and short-circuit currents up to 25kA, ensuring stable performance during startup surges or fault conditions.
Compact Design: Lightweight construction with a footprint 30% smaller than conventional air-insulated contactors, allowing easy integration into space-constrained switchgear cabinets.
Intelligent Control: Optional electronic control units provide real-time monitoring of contactor status, including coil voltage, contact wear, and operating 次数，enabling predictive maintenance.
Suitable for:
Power Generation: Switching generators, transformers, and capacitor banks in thermal, hydro, and wind power plants.
Industrial Motors: Controlling large induction motors in pumps, compressors, and fans in mining, steel, and cement industries.
Railway Systems: Used in traction power supplies for electric locomotives and high-speed trains, ensuring reliable power transfer.
Renewable Energy: Integrating with solar and wind inverters for efficient grid connection and load management.
Q: How often do vacuum contactors need maintenance?
A: Due to the sealed vacuum interrupter, routine maintenance is minimal—only periodic visual inspections and functional tests are required, typically every 3-5 years.
Q: Can they be used in outdoor substations?
A: Yes, outdoor-rated models with IP54 protection are available, featuring corrosion-resistant coatings for harsh weather conditions.
Q: What is the voltage drop across the contactors?
A: The contact resistance is less than 500 microohms, ensuring minimal power loss and efficient energy transfer.
CKJ5 Series vacuum contactor 80A -800A | |||||||
Detail Tech parameter | 80/1140 | 125/1140 | 160/1140 | 250/1140 | 400/1140 | 630/1140 | 800/1140 |
Main circuit rated voltage (V) | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 |
Main circuit rated current (A) | 80 | 125 | 160 | 250 | 400 | 630 | 630 |
Combiner closing capacity (A/100times) | 800 | 1250 | 1600 | 2500 | 4000 | 6000 | 6000 |
Main circuit break-make ability (A/10times) | 640 | 100 | 1280 | 2000 | 3200 | 5000 | 5000 |
Maximum break ability (A/3times) | 1600 | 2500 | 3200 | 4000 | 4500 | 6000 | 6000 |
Electricity life AC3(times) | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 |
Electricity life AC4 (times) | 6 0000 | 6 0000 | 6 0000 | 10 0000 | 10 0000 | 10 0000 | 10 0000 |
Mechanical life (times) | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 |
Rated operate frequency AC3 (times/h) | 600 | 600 | 600 | 300 | 300 | 300 | 300 |
Rated operate frequency AC4 (times/h) | 300 | 300 | 300 | 120 | 120 | 120 | 120 |
Clearance between open contacts (mm) | 1.8±0.2 | 1.8±0.2 | 1.8±0.2 | 2±0.2 | 2±0.2 | 2.5±0.2 | 2.5±0.2 |
Over travel (mm) | 0.6±0.2 | 0.6±0.2 | 0.6±0.2 | 1±0.2 | 1±0.2 | 1±0.2 | 1±0.2 |
Secondary control voltage (v) | AC&DC:36v 110v 127v 220v 380v 440v | ||||||
Utilizing vacuum interrupter technology, these contactors offer exceptional arc suppression, minimal maintenance, and a long service life, making them ideal for applications where downtime is costly. Available in ratings from 6kV to 10kV, the GKJ5 series ensures safe and efficient power switching in industrial and utility environments.
Vacuum Interrupter Technology: The hermetically sealed vacuum chamber extinguishes arcs rapidly, reducing contact erosion and enabling up to 100,000 mechanical operations. This technology eliminates the need for arc quenching gases or liquids, enhancing safety and environmental friendliness.
High Current Capacity: Capable of handling rated currents up to 630A and short-circuit currents up to 25kA, ensuring stable performance during startup surges or fault conditions.
Compact Design: Lightweight construction with a footprint 30% smaller than conventional air-insulated contactors, allowing easy integration into space-constrained switchgear cabinets.
Intelligent Control: Optional electronic control units provide real-time monitoring of contactor status, including coil voltage, contact wear, and operating 次数，enabling predictive maintenance.
Suitable for:
Power Generation: Switching generators, transformers, and capacitor banks in thermal, hydro, and wind power plants.
Industrial Motors: Controlling large induction motors in pumps, compressors, and fans in mining, steel, and cement industries.
Railway Systems: Used in traction power supplies for electric locomotives and high-speed trains, ensuring reliable power transfer.
Renewable Energy: Integrating with solar and wind inverters for efficient grid connection and load management.
Q: How often do vacuum contactors need maintenance?
A: Due to the sealed vacuum interrupter, routine maintenance is minimal—only periodic visual inspections and functional tests are required, typically every 3-5 years.
Q: Can they be used in outdoor substations?
A: Yes, outdoor-rated models with IP54 protection are available, featuring corrosion-resistant coatings for harsh weather conditions.
Q: What is the voltage drop across the contactors?
A: The contact resistance is less than 500 microohms, ensuring minimal power loss and efficient energy transfer.
CKJ5 Series vacuum contactor 80A -800A | |||||||
Detail Tech parameter | 80/1140 | 125/1140 | 160/1140 | 250/1140 | 400/1140 | 630/1140 | 800/1140 |
Main circuit rated voltage (V) | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 | 1140 |
Main circuit rated current (A) | 80 | 125 | 160 | 250 | 400 | 630 | 630 |
Combiner closing capacity (A/100times) | 800 | 1250 | 1600 | 2500 | 4000 | 6000 | 6000 |
Main circuit break-make ability (A/10times) | 640 | 100 | 1280 | 2000 | 3200 | 5000 | 5000 |
Maximum break ability (A/3times) | 1600 | 2500 | 3200 | 4000 | 4500 | 6000 | 6000 |
Electricity life AC3(times) | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 | 60 0000 |
Electricity life AC4 (times) | 6 0000 | 6 0000 | 6 0000 | 10 0000 | 10 0000 | 10 0000 | 10 0000 |
Mechanical life (times) | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 | 100 0000 |
Rated operate frequency AC3 (times/h) | 600 | 600 | 600 | 300 | 300 | 300 | 300 |
Rated operate frequency AC4 (times/h) | 300 | 300 | 300 | 120 | 120 | 120 | 120 |
Clearance between open contacts (mm) | 1.8±0.2 | 1.8±0.2 | 1.8±0.2 | 2±0.2 | 2±0.2 | 2.5±0.2 | 2.5±0.2 |
Over travel (mm) | 0.6±0.2 | 0.6±0.2 | 0.6±0.2 | 1±0.2 | 1±0.2 | 1±0.2 | 1±0.2 |
Secondary control voltage (v) | AC&DC:36v 110v 127v 220v 380v 440v | ||||||
