1. ZN23-40.5 series 3 phase indoor 33kv 35kv 40.5kv air circuit breaker draw out type
ZN23-40.5 vacuum circuit breaker is rated voltage 40.5kA, three-phase AC 50Hz indoor high-voltage electrical equipment.
Apply to industrial and mining enterprises, substation and transmission and distribution systems for control and protection switching; particularly suitable for metallurgy, electric arc steel-making industries, etc. frequent operation required, as a control and protection equipment.
This product meets the GB 1984-89 “AC High Voltage Circuit Breaker” standard.
2. Parameter of air circuit breaker draw out type
| NO | Item | Units | Technical parameters |
| 1 | Rated voltage | kV | 40.5 |
| 2 | Thunder impulse withstand voltage(peak value) | kV | 185 |
| 3 | lmin industrial frequency withstand voltage | kV | 95 |
| 4 | Rated frequency | Hz | 50 |
| 5 | Rated current | A | 1250,1600,2000 |
| 6 | Rated short-circuit break current | kA | 25 | 31.5 |
| 7 | Rated peak value withstand current | kA | 25 | 31.5 |
| 8 | Rated peak value withstand current | KA | 63 | 80 |
| 9 | Rated short-circuit duration time | s | 4 |
| 10 | Rated short circuit breaking time | ms | |
| 11 | Rated short circuit closing current | kA | 80 |
| 12 | Rated operation order | | 0-0.3s-C0-180s-C0 |
| 13 | Time of closing brake | ms | 50~85 |
| 14 | Time of breaking brake | ms | 40~85 |
| 15 | Rated short-circuit current break and close times | Times | 20 |
| 16 | Mechanical life-span | Times | 10000 |
| 17 | Rated dropout current of condenser bank | A | 630 |
| 18 | Rated power of energy-storage electric machine | W | 275 |
| 19 | Rated volt of energy-storage motor | V | 25 ± 2 |
| 20 | Storage time | S | ≤15 |
| 21 | Closing and opening solenoid rated voltage | V | ≈220,110 |
| 22 | Loss of pressure tripping device rated voltage | V | ≈220,110 |
| 23 | Over current tripping device rated current | A | 5 |
| 24 | Auxiliary switch rated voltage current | A | DC10 |
3. Working application
Amplitude: earthquake intensity does not exceed 8 °,
Air relative humidity on average less than 95%, on average less than 90%
An ambient air temperature: to +40 °C, the lower limit of -150°C,
Altitude:. ≤ 1000m (For higher altitudes, the rated insulation board level relative increase)
No risk of fire, explosion, serious pollution, chemical corrosion and severe vibration.
4. Technical drawings
5. Factory
6. Delivery
7. FAQ
1. Send the technical data, better for all useful information; we will make a good recommendation.
If possible please attach one reference picture to avoid any misunderstanding or any links from our website for we get a better understanding.
2. The lead time depend on quantity of order. Some standard type is on stock. Otherwise, it will take 3-15 days.
3. Usually shipped by sea, small order or urgent order we can send you by air.
4. All our activities are accredited to ISO 14001:2015 and IEC standard.
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ZN23-40.5 3 Phase Indoor 33kv 35kv 40.5kv Air Circuit Breaker Images
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