Voltage Contactor CKG3 High Voltage Vacuum Contactor

CKG3-7.2kV160A,250A,400A,630A AC H.V 3 Phase Vacuum Contactor PriceCKG3/4-7.2 AC 3-pole vacuum contactors are applied in power network with ACfrequency of 50Hz-60Hz, rated voltage of 7.2kV (6.6 kV vacuum contactor or 7.2kV vacuumcontactor), and rated current below 630A in the main loop for the remote making andbreaking, frequent start and control of AC motor. Such high voltage vacuum contactor isadvisable to use them in combination with fuse and protective device to replace vacuumcircuit breaker.Model Rated Voltage (kV) Main Electric Circuit (A) Main Contact Distance (mm) Main Contact Tra...

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CKG3-7.2kV160A,250A,400A,630A AC H.V 3 Phase Vacuum Contactor Price

CKG3/4-7.2 AC 3-pole vacuum contactors are applied in power network with ACfrequency of 50Hz-60Hz, rated voltage of 7.2kV (6.6 kV vacuum contactor or 7.2kV vacuumcontactor), and rated current below 630A in the main loop for the remote making andbreaking, frequent start and control of AC motor. Such High Voltage vacuum contactor isadvisable to use them in combination with fuse and protective device to replace vacuumcircuit breaker.

Model	Rated Voltage (kV)	Main Electric Circuit (A)	Main Contact Distance (mm)	Main Contact Travel (mm)	Contact Pressure	Frequency Voltage (V, RIMS)	Auxiliary Electric Circuit (V)
CKG-7.2/160	7.2	160	3.5 ± 0.3	3.5 ± 0.3	>85 N	3200	220/110
CKG-7.2/250	7.2	250	3.5 ± 0.3	3.5 ± 0.3	>85 N	2500	220/110
CKG-7.2/400	7.2	400	3.5 ± 0.3	3.5 ± 0.3	>85 N	3200	220/110
CKG-7.2/630	7.2	630	3.5 ± 0.3	3.5 ± 0.3	>85 N	2000	220/110

Model	Making Capacity	Breaking Capacity	Breaking Current	Electric Life Time AC3	Electric Life Time AC4	Mechanical Life	Weight (kg)
CKG-7.2/160	10Ie, 100 times	8Ie, 25 times	45A	60 × 10³	6 × 10⁴	100 × 10⁴	25.5
CKG-7.2/250	10Ie, 100 times	8Ie, 25 times	45A	60 × 10³	6 × 10⁴	100 × 10⁴	25.5
CKG-7.2/400	10Ie, 100 times	8Ie, 25 times	45A	60 × 10³	6 × 10⁴	100 × 10⁴	25.5
CKG-7.2/630	10Ie, 100 times	8Ie, 25 times	45A	60 × 10³	6 × 10⁴	100 × 10⁴	36

CKG3 High Voltage Vacuum Contactor – Precision Control for Industrial Power Systems

Engineered for demanding environments, the Voltage Contactor CKG3 High Voltage Vacuum Contactor is a reliable solution for remote switching and frequent control of AC motors in 7.2kV networks operating at 50/60 Hz. With current ratings spanning **160A to 630A**, this three-pole vacuum contactor offers exceptional electrical endurance—up to **60,000 operations under AC-3 duty**—and features consistent contact travel (3.5 ± 0.3 mm) and robust contact pressure (>85 N) to ensure stable arc suppression and long-term performance.

Designed to replace traditional vacuum circuit breakers when paired with fuses and protective relays, the CKG3 series excels in applications requiring high operational frequency and compact footprint. Its lightweight yet durable construction (as low as 25.5 kg) simplifies installation in switchgear cabinets while maintaining compliance with stringent dielectric standards—withstanding up to **3.2 kV RMS** across main circuits.

Industrial motor control contactor – ideal for frequent start/stop cycles in pumps, compressors, and conveyors
Compact high-voltage switching device – saves panel space without compromising breaking capacity (8×Ie)
Fuse-combined vacuum contactor system – cost-effective alternative to full circuit breakers in protected motor circuits

Backed by a mechanical life of **1 million operations**, the CKG3 ensures minimal maintenance and maximum uptime. Auxiliary circuits support standard control voltages (110V/220V AC/DC), enabling seamless integration into modern automation systems. Whether deployed in manufacturing plants, oil & gas facilities, or utility substations, this contactor delivers the safety, efficiency, and durability required for mission-critical medium-voltage applications.