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FZ(R)N21-12D AC high voltage vacuum load breaking switch
FZN21-12D/T630-20 series three poles alternating current vacuum load break switch-fuse protector combination. It has merit of excellent breaking ability, small size, long electric life, free of maintenance, can break rated current, overload current (FZN21-12D/T125-31.5 can break short circuit current) and prevent device from phase-default operation. The switch has an obvious visible isolate fracture to assemble earth switch and electric spring mechanism, thus can conduct remote control.
Ambient condition
1 Ambient temperature: max +40°C min -15°C(conveyance under -30°C is allowed)
2 Altitude: ≤1000m
3 Relative humidity: daily average relative humidity: ≤95%; monthly average relative humidity≤90%; daily average saturated vapor pressure ≤2.2*10-3 MPa; monthly average value ≤1.8*10-3 MPa
4 Earthquake intensity: ≤8 degree
5 The installation should be free from fire, explosion, severe vibration, chemical corrosion and serious pollution
Order instructionComplete model and order quantity of the productRated current, rated voltage, rated voltage of operation mechanismNeed panel, earth switch, fuse protector or not, what is the rated current and quantity of fuse protectorRequired accessory and quantityOther requirement please contact with us directly
Main technical data
Main Technical Data |
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Type |
| FZN21-12D/T630-20 | FZN21-12D/T125-31.5 | ||
Rated voltage | kv | 12 | |||
Rated current | A | 630 | 1250 | ||
Rated short-time power frequency withstand voltage(1 min) | kv | Fructure of vacuum interrupter 30 | |||
Rated short-time power frequency withstand voltage (valid) | kv | Interphase or to ground 42,fructure 48 | |||
Rated lighting impulse withstand voltage | kv | Interphase or to ground 75,fructure 85 | |||
Rated dynamic stability current (peak) | kA | 50 |
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4S thermostability current | kA | 20 |
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Rated breaking current of active load | A | 630 |
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Rated breaking current of close loop | A | 630 |
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Rated breaking current of cable charging current | kA | 10 |
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Rated capacitor volume of breaking non-load | kv | 3150 | |||
Rated breaking joint current | v |
| 1250 | ||
Output of energy of collider |
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| 2~5 | ||
Interruption of rated current | times | 1000 | |||
Rated short circuit making current | kA | 50 | |||
Rated dynamic stability current of earth switch | kA | 50 | |||
2S dynamic stability current of earth switch | kA | 20 | |||
Rated voltage of assist circuit | v | AC,DC220 AC,DC110 | |||
Mechanical life | times | 10000 | |||
Contact erosion limit of vacuum interrupter | mm | 2 | |||
Manual operation moment of force | Nm | >200 | |||
FZ(R)N21-12D AC high voltage vacuum load breaking switch