CKG4-7.2/12 High Voltage Vacuum AC Contactor

Description

The CKG4-7.2/12 high voltage vacuum AC contactor is designed for use in AC systems with a frequency of 50-60Hz. It is suitable for applications where the main circuit’s rated working voltage is either 7.2KV or 12KV and the rated current does not exceed 630A. This contactor is commonly used in power distribution networks for long-distance connections and disconnections, frequent motor starts, and is ideal for controlling AC motors. It can serve as a replacement for vacuum circuit breakers when used in conjunction with fuses and various protection devices.

Model

• 160/7.2
• 250/7.2
• 400/7.2
• 630/7.2
• 160/12
• 250/12
• 400/12
• 630/12

Electrical Ratings

• Rated Voltage: 7.2KV or 12KV
• Rated Current: 160A, 250A, 400A, 630A
• Main Circuit Joint Capability (A/100 times): 1600, 2500, 4000, 6300
• On-Off Capability of Main Circuit (A/10 times): 1280, 2000, 3200, 5000
• Limit Breaking Capacity (A/3 times): 3200, 4000, 4500, 6300

Mechanical and Electrical Characteristics

• Mechanical Life (Ten thousand times): 100
• Mechanical Lock Life (Ten thousand times): 10
• Main Circuit Power Frequency Voltage Withstand (kV): 42
• Auxiliary Circuit Power Frequency Voltage Withstand (kV): 2.5
• Power Frequency Voltage Withstand of Control Circuit (kV): 2
• Rated Operating Frequency (times/h): 300
• Frequency of Mechanical Lock Operation (times/h): 30
• Contact Opening (mm): 5±0.5
• Overrange (mm): ≥1.2