ZN12-40.5 Vacuum Circuit Breaker for Generator
The ZN12-40.5 type vacuum circuit breaker is high-voltage indoor switchgear that comes with 3-phase current, rated voltage of 40.5KV and frequency of 50HZ. It can be used to control or protect switches in power plants, urban power grid, substation, and other power transmission and distribution systems. Typical applications are found in the breaking of important loads as well as frequent breaking procedure.
Feature of the ZN12-40.5 Vacuum Circuit Breaker for Generator
1. Simple structure: This product mainly consists of vacuum interrupter, operating mechanism and supporting system.
2. Strong breaking capacity and multiple functions
3. Long lifespan with rated breaking capacity of 10,000 times
4. Overvoltage protection device is provided, without any risk of explosion
5. Highly reliable and easy to repair
| Parameter | Unit | Data |
| Rated voltage | kV | 40.5 |
| Rated current | A | 1250, 1600, 2000, 2500 |
| Rated short circuit breaking current | kA | 25, 31.5 |
| Rated peak withstand current | kA | 63, 80 |
| Rated current breaking capacity | times | 10000 |
| Rated short-circuit current (peak) | kA | 63, 80 |
| 4S Short-time thermal current | kA | 25, 31.5 |
| Rated short circuit breaking capacity | times | 20 |
| Rated operating sequence | Open-0.3s-close/open-180s-close/open | |
| Rated lightning impulse withstand voltage (full wave) | kV | 185 |
| Rated short-time power-frequency withstand voltage (1 min.) | kV | 95 |
| Closing time | s | ≤0.09 |
| Opening time | s | ≤0.075 |
| Mechanical life | 次 | 10000 |
| Rated power of energy storage motor | W | ≌ 275 |
| Rated voltage of energy storage motor | V | ≌ 110 220 |
| Energy storage duration | S | ≤15 |
| Rated voltage of tripping electromagnet | V | =110 ＝ 220 |
| Rated current of over-current release | A | 5 |
| Rated current of auxiliary switch | A | AC10 DC5 |
| Model | Delivery Period (working day) |
| ZN12-12 | 30 |
| ZN12-40.5 | 30 |
English
Español
Русский
