Summary The FN5-12R(L) Indoor AC H. V. Load switch and fuse combination is designed by ourselves, combined with the requirement of our country and based on the advanced foreign technique. It has been tested for long term by full aspects and confirmed to IEC62271 "AC H. V. Load switch-fuse box"(2002 version) and GB3804 "3-63KV AC H. V. Load switch" standard. Compared to the same products of overseas, It has come up to the technique parameter level. For its small size and light weight, it can be used in RMU and compact substations, also widely used for the power distribution of the 12KV line and has the perfect function of open phase protection. The development of the FN5-12 realized the functions of switch, isolation and earthing.
Application The FN5-12R(L) Indoor AC H. V. Load switch and fuse combination is also called Load switch with release device, adapt to electrical power system with the frequency 50Hz and rated voltage 6-12KV. Used to breaking the on-load current, over-load current and the breaking current. It is equiped with CS6-1 type manual operating system.
Rated short-circuit switch-off current
1min power frequency withstand voltage(value) to earth and between poles/ across isolating distance
Lighting impulse resisting voltage (peak) to earth and between poles/ across isolating distance