1.vacuum circuit breaker with IEC standard
2.Rated voltage 12KV
3.Rated current 630/1250/1600/2500/3150
4.OEM service
ZN12-12 indoor high voltage vacuum circuit breaker is a type of 12kv,50HZ three phase alternating switch. The mechanism and vacuum interrupter are designed to be a whole. Specialized 3AF type spring operating structure from Siemens can be operated by manual or carry out direct current energy saving operation. It’s can be designed as 210mm,230mm,250mm,275mm and other kinds of phase space, which matches better with different kinds of switchgear, such as handcart type JYN2-12,JYN6-12,KYN2-12.
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 instruction
Complete model and order quantity of the product
Rated current, rated voltage, distance of each poles
Rated short circuit breaking current, operation voltage
Required accessory and quantity
Other requirement please contact with us directly
| Main Technical Data | ||||
| Rated voltage | kv | 12 | ||
| Rated lighting impulse withstand voltage | kv | Interphase or to ground 75,fructure 80 | ||
| Rated short-time power frequency withstand voltage(dry) | kv | Interphase or to ground 42,fructure 48 | ||
| Rated short-circuit breaking current | kA | 25 | 31.5 | 40 |
| Rated current | A | 630/1250 /1600 | 1250/1600 /2000/2500 | 1600/2000 /3150 |
| Rated thermostability current(valid) | kA | 25 | 31.5 | 40 |
| Rated dynamic stability current(peak) | kA | 63 | 80 | 100 |
| Rated short-circuit making current(peak) | kA | 63 | 80 | 100 |
| Rated operations of short-circuit breaking current interruption | times | 50(40kA is 30) | ||
| Rated working current of overcurrent and tripping coil | A | 5 | ||
| Rated operating sequence | 0-0.3-CO-180s -CO/ 0-180s-CO-180s-CO(40KA) | |||
| Mechanical life | times | 10000 | ||
| Rated current of auxiliarate switch | A | AC10,DC5 | ||
| Rated voltage of energy saving release | v | AC,DC220 AC,DC110 | ||
| Closing time | ms | ≤75 | ||
| Opening time | ms | ≤60(40) | ||
| Power of energy saving motor | w | 275 | ||
| Energy saving time | s | ≤15 | ||
| Mechanical life | times | 20000 | ||
Mechanical characteristics adjustment data
Rated contact stroke mm 11±1
Contact overtravel mm 8±2
Average opening speed m/s 1.0~1.8
Average closing speed m/s 0.6~1.1 0.8~1.3 0.8~1.3
Contact bouncing duration at closing operation ms ≤2
Core distance between phases mm 210,230,250,275
Three-pole simultaneity ms ≤2
Condactive circuit resistance of each phases μΩ <40
