EKJ sealed pole vacuum circuit breaker is an indoor switchgear component with vacuum insulation. It can be operated frequently or interrupt short-circuit current multiple times within the working current range; the mechanical life can be up to 30,000 times, and the full-capacity short-circuit current interruption times can reach 50 times. EKJ vacuum circuit breaker is suitable for reclosing operation and has extremely high operational reliability and service life.

 1. Application

 The products are widely used in power plants, power grids, coal mines, airports, petrochemicals, metallurgy and urban infrastructure construction and renovation projects.

 2. Features

 The surface treatment process and lubrication technology used in the vacuum circuit breaker mechanism improve the product's anti-corrosion ability and also improve the product's reliability during its expected lifespan. The primary conductive circuit adopts a sealed pole type, which is suitable for hot and humid areas.

3. Technical data

 Rated voltage: 12kV

 Rated frequency: 50Hz

 Rated current: 630A-4000A

 Rated short-circuit breaking current: 20kA-40kA

 Mechanical life: 30,000 times

 Installation method: equipped with KYN28-12 (GZS1), XGN and other switch cabinets.

 4. Implementation standards:

 GB/T1984-2003 High Voltage AC Circuit Breakers

 GB/T11022-1999 Common Technical Requirements for High Voltage Switchgear and Control Equipment Standards

 JB/T3855-1996  3.6~40.5kV Indoor AC High Voltage Vacuum Circuit Breaker

 DL/T403-2000 Technical requirements for ordering 12~40.5kV high voltage vacuum circuit breakers

 IEC62271-100:2001, IEC56 and other standards and regulations of other major industrialized countries

5. Working Conditions

 Ambient temperature

 High temperature 40℃

 Low temperature -15℃

 Humidity

 Daily average relative humidity: 95%

 Average monthly relative humidity: 90%

 Conventional circuit breakers can be installed at an altitude of up to 1000m above sea level, and plateau products can be installed at an altitude of up to 4000m.

 6. Ordering instructions

 It is helpful if following information are provided;

Circuit breaker model, name, rated voltage, rated current, rated short-circuit breaking current, phase spacing and required quantity

 Spare parts name and quantity