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Product Details:
Category：Vacuum Circuit Breaker
Name：Indoor high voltage circuit breaker
Model：ZN12-12
Packing：Plastic bag & Wooden case or as requested
Delivery & Payment Terms:
Shipping time： Usually 30 days after the ordered confirmed
Payment：T/T, L/C, Western Union or Paypal
Trade term：FOB China port, or CIF
Environment Condition:
– Ambient temperature:-25℃~+40℃
– Altitude: ≤1000m
– Daily average relative humidity: ≤95%; Monthly average relative humidity: ≤90%
– Daily average saturated vapor pressure: ≤2.2KPa; Monthly average value : ≤1.8KPa
– Earthquake intensity: ≤8 degree
– No fire, explosion, severe vibration, chemical corrosion and serious pollution
Technical Data
| 1 | Rated voltage | KV | 12, 40.5 | ||
| 2 | Rated lighting impulse withstand voltage | KV | Phase to phase or to Ground 75, fracture 80 | ||
| 3 | Rated short-time power frequency withstand voltage | KV | Phase to phase or to Ground 42, fracture 48 | ||
| 4 | Rated short-circuit breaking current | KA | 20, 25 | 31.5 | 40 |
| 5 | Rated current | A | 630/1250/1600 | 1250/1600/2000/2500 | 1600/2000/3150 |
| 6 | Rated thermo stability current(valid) | KA | 25 | 31.5 | 40 |
| 7 | Rated dynamic stability current(peak) | KA | 63 | 80 | 100 |
| 8 | Rated short-circuit making current(peak) | KA | 63 | 80 | 100 |
| 9 | Rated operations of short-circuit breaking current interruption | Times | 50(40kA is 30) | ||
| 10 | Rated working current of over current and tripping coil | A | 5 | ||
| 11 | Rated operating sequence | 0-0.3s-CO-180s -CO/0-180s-CO-180s-CO(40KA) | |||
| 12 | Rated current of auxiliary switch | A | AC10,DC5 | ||
| 13 | Rated voltage of energy saving release | V | AC.DC220 AC.DC110 | ||
| 14 | Closing time | Times | ≤75 | ||
| 15 | Opening time | ≤60(40) | |||
| 16 | Power of energy saving motor | W | 275 | ||
| 17 | Energy saving time | S | ≤15 | ||
| 18 | Mechanical life | Times | 20000 | ||
Mechanical characteristics adjustment data
| 1 | Rated contact stroke | mm | 11 ±1 | ||
| 2 | Contact over travel | mm | 8±2 | ||
| 3 | Average opening speed | m/s | 1.0~1.8 | ||
| 4 | Average closing speed | m/s | 0.6~1.1 | 0.8~1.3 | 0.8~1.3 |
| 5 | Contact bouncing duration at closing operation | ms | ≤2 | ||
| 6 | Core distance between phases | mm | 210,230,250,275,280 | ||
| 7 | Three-pole simultaneity | ms | ≤2 | ||
| 8 | Conductive circuit resistance of each phases | μΩ | <40 | ||
Outline Dimension
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