FZN21A-12 and this type of indoor AC high voltage load switch fuse combination units appliances for three-phase AC 10kV, 50Hz power system, or with the complete power distribution equipment and loop-network switch cabinet , combined substation and other ancillary uses, is widely used in urban network construction and transformation engineering, industrial and mining enterprises, high-rise buildings and public facilities ,can be used as ring power supply unit or terminal equipment, play power distribution, control and protection.
Technical performance of the products meet the IEC publication 60265-1/FDIS IEC60420 and CB16926 GB3804
This product has a breaking capacity, safety and reliability, long life, can operate frequent, compact structure, small size, light weight, the basic no need to maintain. Breaking with rated current, overload current (FZRN21A-12 can short-circuit breaking current) and to prevent equipment missing running ability to switch a visible fracture of isolation, with combined installed capacity of the ground with the relevant switches and electrical spring agencies, to remote control.
Rated active load breaking curren
Rated closed loop breaking current
5% rated active load breaking current
Rated cable charge breaking current
Rated iding transformer capacity
1min power frequency withstand voltage:(Vacuum fracture,phase direction,phase to earth/lsolation fracture)
Lightning surge withstand voltage:(vacuum fracture,phase to phase,phase to earth/lso lation fracture)
Rated short-time withstand current(themal stable)
Rated peak value withstand current(peak withstand stably)