CKG3-12 Series 12kV 5-Pole High Voltage AC Vacuum Contactor – 630A Magnetic Switch for Motor Control and Circuit Protection
The CKG3-12 Series 5-Pole Vacuum Contactor is a specialized high-voltage solution designed for 12kV power networks operating at AC 50-60Hz. Featuring a unique 5-pole configuration, this unit is optimized for the frequent starting and control of AC motors, offering a superior and more flexible alternative to traditional vacuum circuit breakers when paired with fuses and protection devices. Engineered for long-distance connection and disconnection, it provides exceptional reliability and arc-extinguishing performance for mining, industrial plants, and complex power distribution systems.
CKG3-12 Series 12kV 5-Pole High Voltage AC Vacuum Contactor (160A – 630A)
Product Overview
The CKG3-12 Series is a specialized high-voltage AC vacuum contactor designed for 12kV power networks operating at AC 50-60Hz. This series is uniquely engineered with a 5-pole configuration, making it an exceptionally flexible choice for the frequent starting and control of AC motors. It serves as a superior, high-reliability alternative to traditional vacuum circuit breakers, especially when integrated with fuses and various protection apparatus.
Core Advantages
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Unique 5-Pole Design: The five-pole architecture provides enhanced circuit control flexibility, allowing for complex switching configurations in high-voltage industrial systems.
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High Arc Extinguishing Capacity: Utilizes advanced vacuum interrupters to ensure rapid and safe arc extinction without external arcing, enhancing overall system safety.
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Exceptional Service Life: Designed for longevity with a mechanical life of up to 1,000,000 operations, significantly extending maintenance intervals.
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Compact & Lightweight: Despite its 5-pole capacity, the unit maintains a small volume and light weight for easier integration into electrical panels.
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Robust Environmental Adaptability: Operates reliably in temperatures ranging from -10°C to +40°C and at altitudes up to 1000m (standard type) or 4000m (plateau type).
Technical Specifications
| Item | Unit | CKG3-160 | CKG3-250 | CKG3-400 | CKG3-630 |
| Rated Main Loop Voltage | kV | 12 | 12 | 12 | 12 |
| Rated Working Current | A | 160 | 250 | 400 | 630 |
| Mechanical Life | Times | 1,000,000 | 1,000,000 | 1,000,000 | 1,000,000 |
| Joint Capacity | A/100 times | 1600 | 2500 | 4000 | 6300 |
| On-Off Capability | A/10 times | 1280 | 2000 | 3200 | 5000 |
| Power Freq. Withstand (Main) | kV | 32 | 32 | 32 | 32 |
| Contact Opening Distance | mm | 5 ± 0.5 | 5 ± 0.5 | 5 ± 0.5 | 5 ± 0.5 |
Typical Applications
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Industrial AC Motor Control: Specifically for high-frequency starting and remote control.
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Long-Distance Line Management: Connecting and disconnecting high-voltage lines efficiently.
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Complex Protection Systems: Ideal replacement for breakers when used with high-voltage fuses.
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High-Altitude Power Projects: Plateau-type configurations available for use up to 4000m.
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