Intelligent Air Frame Circuit Breaker (HKKW1-2000)

HKKW1 series intelligent air circuit breaker is suitable for the circuit of AC 50Hz with rated voltage 400V, 690V and rated current up to 6300A. It is mainly used to distribute electric energy and protect circuit and power supply equipment from overload, under-voltage shortcircuit, and single-phase earthing. With intelligent and selective protection functions, the breaker can improve the reliability of power supply, and avoid unnecessary power failure. The breaker is applicable for power stations, factories, mines(for 690V) and modern highbuilding, especially for the distribution system of intelligent building. The breaker conforms to IEC60947-2. The whole series have past CCC certification and CE certification. Environment conditions for operation: Temperature condition: -5 +40; The average value within 24h not exceed +35_. Elevation: Altitude of installation place shall not exceed 2000m. Atmosphere condition: Relative humidity at +40_=shall not exceed 50%. Higher humidity is permissible at lower temperature condition. When the higher monthly average relative humidity is 90% in the humiddest month, the lowest monthly average temperature of this month is +25_. And consider the influence of dew on product surface due to temperature changes. Pollution grade: Grade III. The breaker should be installed according to the requirement of the instruction manual. Vertical inclination degree shall not exceed 5.