| Rated Operating Voltage | AC400V/690V, three-phase 50Hz/60Hz | Standard voltage for low-voltage distribution systems |
| Rated Insulation Voltage | 690V (max 1000V) | Insulation withstand level of circuits |
| Horizontal Main Busbar Rated Current | 630A ~ 6300A (commonly 1600/2500/4000A) | Total incoming busbar capacity of the whole switchgear |
| Vertical Branch Busbar Current | Max 1000A | Busbar feeding single drawer column |
| Max Rated Current per Drawer | 630A | Fixed compartment for high-power circuits |
| Short-time Withstand Current (1s) | 50kA, 80kA | Thermal stability capability of busbar |
| Peak Withstand Current | 105kA, 176kA | Dynamic stability against short-circuit impulse |
| Power-frequency Withstand Voltage (Main Circuit) | 2500V/1min; auxiliary circuit 1760V/1min | Factory withstand voltage test |
| Enclosure Degree of Protection | Standard IP30, optional IP40 | Dust-proof and solid foreign object protection for indoor switchgear room |
| Standard Enclosure Dimensions | Height 2200mm × Width 400/600/800/1000mm × Depth 800/1000mm | Single-sided operation structure |
| Enclosure Frame | 8MF cold-rolled steel section, modular hole pitch 20mm | Refined layout, higher circuit density |
| Drawer Positions | Four mechanically locked positions: Connected (Working), Test (Disconnected), Isolated, Withdrawn | Four-level safety positions |
