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JCZ5 250A 400A 630A 7.2KV AC High Voltage Vacuum Contactor

The JCZ5-7.2 and JCZ5-12 series indoor AC high voltage vacuum contactor, it is divided into closing mechanical keeping and electromagnetic keeping two forms. This contactor is suitable for three phase AC 50Hz,rated voltage 7.2kV and 12kV,rated current up to 630A electricity power system, for long-distance making and breaking circuit, control such as the high voltage motor, transformer and capacitive load electrical equipment, especially suitable for the frequent operation. This contactor has the small shape,light weight, the assembled structure adopts the international popular layout of packaged up and down, convenient use and maintenance.  
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Normal working conditions

  1. Altitude above sea should not be over 1,000m;
  2. Ambient temperature is -5~40°C;
  3. Average temperature in 24 hour limited below 35°C;
  4. When the highest temperature is 40°C, the relative humidity should not be higher than 50%;
  5. Pollution degree: class 3

Specification

Item Unit Data
Rated voltage kV 7.2/12
Rated current A 630 400 250
Rated closed current (valid values) 6300 4000 2500
Rated max breaking current 5040 3200 2000
4s thermal stability of the current 6300 4000 2500
Max breaking current 6300 4000 2500
Power frequency withstand voltage kV 42
Allows the operating frequency Time/h 300
Electric life AC-3 ×104times 25
AC-4 10
Electrical life 30
Rated operation voltage V AC110/220
Closing coil absorption current A ≤DC6/3
Keep coil keeping current D:DC 0.32/0.16
Shunt coil tripping current J:DC 2.5/1.3
Contact from mm 5.5~7
Contact distance 1.5±0.5
Average closing speed m/s 0.1~0.25
Average break-brake speed 0.3~0.6
Three phase break-brake synchronism ms ≤2
Closing time/break-brake time ≤150/≤50
Resistance(20℃) μΩ ≤250

Key features

  • Vacuum interrupter technology for superior arc control and durability

  • High-frequency switching capability suitable for motor and capacitor operations

  • Compact indoor design for switchgear panel integration

  • Long mechanical and electrical life with low maintenance requirements

  • OEM/ODM customization supported by experienced factory manufacturer

  • Flexible supply from supplier and wholesaler with low MOQ and competitive pricing

As a reliable manufacturer and supplier, this product offers consistent quality, cost-effective solutions, and customization options for global distributors and electrical system integrators.

The JCZ5-7.2 and JCZ5-12 series indoor AC high voltage vacuum contactor is designed for switching and controlling high-voltage circuits up to 7.2kV and 12kV. Utilizing vacuum interruption technology, it provides reliable arc extinction, fast switching performance, and extended service life in demanding electrical systems.

This 7.2kV AC high voltage vacuum contactor is widely used in industrial and commercial applications such as motor control, transformer switching, capacitor bank switching, and power distribution systems. It ensures safe and efficient operation of electrical equipment by handling frequent switching duties with minimal wear.

Ideal for industrial users, electrical contractors, and distributors, the JCZ5 series is engineered for seamless integration into switchgear cabinets and control systems, offering stable performance and easy maintenance.