CKG4-12 High Voltage Vacuum Contactor | Efficient AC Motor and Transformer Control | Chennuo Electric-Chennuo Electric Technology Group Co., Ltd

Parameter

Tech. parameters	Model	160、250/12(7.2)	400/12(7.2)	630/12(7.2)	800/12(7.2)	1250/12(7.2)
Rated voltage of Main Loop	(KV)	12(7.2)	12(7.2)	12(7.2)	12(7.2)	12(7.2)
Rated current of Main Loop	(A)	160、250	400	630	800	1000、1250
Main loop making capacity	(A/100times)	2500	4000	6300	8000	10000
Main loop switching capability	(A/25times)	2000	3200	5000	6000	8000
Ultimate breaking capacity	(A/3times)	4000	4500	6300	8000	10000
Mechanical life	(10,000 times)	100	100	100	100	100
Machanical lock life	(10,000 times)	10	10	10	10	10
Electrical endurance AC3	(10,000 times)	25	25	25	25	25
Permanent magnet mechanism lifespan	(10,000 times)	20	20	20	20	20
Power frequency withstand voltage of main loop (fracture)	(KV)	42(32)	42(32)	42(32)	42(32)	42(32)
Phase-phase/phase-to-ground power frequency withstand voltage	(KV)	42(32)	42(32)	42(32)	42(32)	42(32)
Withstand lightning impulse voltage	(KV)	75(60)	75(60)	75(60)	75(60)	75(60)
Rated operating frequency	(times/h)	150	150	150	150	150
Operating Frequency of Permanent magnet mechanism	(times/h)	30	30	30	30	30
Terminal pressure	(N)	>100	>100	>100	>100	>100
Clearance between open contacts	(mm)	6(5)±0.5	6(5)±0.5	6(5)±0.5	6(5)±0.5	6(5)±0.5
Overtravel	(mm)	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5	1.5±0.5
Main loop resistance	(μΩ)	≤200	≤200	≤200	≤150	≤150

Typical Application Scenarios

HV Motor Control: Frequent starting, stopping, and reversing of large-capacity high-voltage AC motors in mining, pumps, and compressors.
Power Generation & Distribution: Main and auxiliary circuit switching in power plants, substations, and industrial power grids.
Reactive Power Compensation: Switching high-voltage capacitor banks and industrial reactor equipment safely without re-ignition surges.
Metallurgy & Heavy Industry: Arc furnaces, rolling mills, and heavy-duty industrial processing lines requiring heavy cycling capabilities.

Why Choose Chennuo Electric?

Specialized Manufacturing Excellence: Years of dedicated expertise in designing and manufacturing high and low-voltage power distribution equipment and components.
Strict Quality Assurance: Every high-voltage vacuum contactor undergoes rigorous factory testing—including high-voltage dielectric tests, partial discharge measurement, and mechanical endurance checks—fully complying with IEC and international standards.
Customization & Global Compatibility: We offer flexible mounting dimensions, diverse coil control voltages, and bespoke solutions to match standard global switchgear configurations.
Reliable International Logistics & Support: Comprehensive export packaging, prompt delivery tracking, and a responsive technical support team ready to assist your engineering projects.

Frequently Asked Questions (FAQ)

Q1: What is the main advantage of using a high-voltage vacuum contactor instead of an SF6 or air circuit breaker?
A: Vacuum contactors are designed for high-frequency switching operations. Unlike standard circuit breakers meant primarily for fault protection, vacuum contactors excel at routine, frequent load switching with much higher mechanical and electrical life cycles, and they are environmentally friendly (SF6-free).

Q2: What voltage and current ratings are available in your high-voltage vacuum contactor series?
A: Our series covers comprehensive ratings up to 40.5kV (including popular 3.6kV, 7.2kV, 12kV, and 24kV variants) with various current capacities. Please refer to our individual product datasheets or contact us for precise specifications matching your system requirements.

Q3: Do these contactors support permanent magnetic operating mechanisms?
A: Yes, we offer options with both traditional high-reliability electromagnetic mechanisms and advanced permanent magnetic mechanisms, which feature fewer moving parts and enhanced trip-free stability.

Q4: How do you ensure safe international shipping for heavy electrical components?
A: All products are securely packed in moisture-proof, shock-absorbing export-grade wooden crates designed to withstand long-distance maritime and air transport, ensuring they arrive at your site in pristine condition.