Products FKN12-12RD / T125-31.5, FKN12-12R / T125-31.5, FKN12-12D / T630-20, FKN12-12 / T630-20 and other models to choose from. These models are left to operate, the right to operate, suits, flip, users can choose according to their needs. . . Can also be customized lengthened. . . Manually operated spring mechanism into the spring mechanism and electric operating spring mechanism. Main purpose: Series compressor load switch is suitable for 12KV and below the three-phase power distribution systems, as transformers, cables, overhead lines and other electrical equipment control and protection purposes; particularly for urban and rural power substation terminal and for ring network, control and protection of double radiation power supply unit. Series compressor load switch can division load current, overload current and short-circuit breaking current. Use of environmental conditions: 1, ambient air temperature limit: + 40 ℃ lower limit: -25 ℃ 2, the altitude of not more than 1000M; 3, relative humidity on average less than 95%, on average less than 90%; 4, earthquake attendance is not more than 8; 5, no fire, explosion, chemical corrosion and severe vibration of the place; 6, filthy grade: ‖ structural characteristics: 1, load switch, earthing switch, fuse and institutions in a framework that can flexibly combination, compact structure, small size, convenient and easy to install; 2 port for direct-acting layout, dynamic and thermal stability current parameters is high, time to complete the operation; 3, with static contact insulation cover, so that the structure of the RMU isolation, eliminating the white insulation board, insulation fracture flapper to prevent a short circuit inside the arc accident; 4, load switch and earthing switch, fuse between reliable mechanical closure devices meet 'five anti' requirements; 5 Both forms of electric operation with manual operation and AC and DC operating power supply, easy to implement power system 'three shake' requirements. The main technical parameters: Rated voltage: 12KV Rated frequency: 50Hz Rated current: 125A Rated insulation level: 1min power frequency withstand voltage - to earth, white 42kv; isolated fracture 48KV. Lightning impulse withstand voltage - to earth, white 75KV; isolated fracture 85KV Rated short time withstand current (thermal current): load switch -20KV earthing switch -20KV rated short duration (thermal current): earthing switch -2s load switch -4s rated active load breaking current: 125A Rated breaking current loop: 125A rated 5% active load breaking current: 31.5A rated cable charging breaking current: 10A rated breaking load transformer capacity: 1250KVA Mechanical life: 2000 times fracture distance: ≧ 175mm white center distance: 210 ± 2mm between charged bodies and air-to-ground distance: ≧ 125mm moving contact stroke: 210 ± 4mm moving contact overtravel: ≥40mm closing speed: ≥2.5m / s opening Speed: ≥2.5m / s three-phase closing different phases: ≤10ms different three-phase opening period: ≤5ms shunt trip inherent Opening time: 40-65ms main circuit resistance: ≤150 micro Europe operating torque: ≤2000N .M