This equipment is indoor metal armoring with drawable switchgear. Designed for 3.6-12 kilovolt three-phase AC 50Hz single bus bar systems, this complete electricity distribution equipment is widely utilized in power plants, small and medium-sized generators, industrial and mining power distribution, and electrical industry substations. Its primary purpose is to control, protect, and monitor electrical systems.
Compliant with IEC 298 and GB3906 standards, it features advanced interlocks to prevent mistaken operations, such as pushing/pulling the breaker under load or opening/closing without proper insulation.


| Parameter Name | Unit | ZN63A-12(VS1) | VD4 |
|---|---|---|---|
| Rated Voltage | kV | 12 | 12 |
| 1min Power Frequency Withstand | kV | 42 | 42 |
| Rated Impulse Withstand Voltage | kV | 75 | 75 |
| Rated Frequency | Hz | 50 | 50 |
| Rated Current | A | 630 - 5000 | |
| Short Time Withstand Current | kA | 16 - 50 | 16 - 50 |
| Rated Short-circuit Duration | s | 4 | 16 - 50 |
| Protection Level | - | Shell IP4X | |





Standard packaging consists of reinforced wooden cases designed for international transport. Typical gross weight is approximately 1200kg with dimensions optimized for container shipping (1000cm x 1660cm x 2300cm).