LV Assemblies
GCS Low-voltage Withdrawable Switchgear
Modular LV drawout switchboard, 400/660V, up to 5000A busbar, 80kA withstand.
GCS is a modular low-voltage withdrawable switchboard for 400V / 660V systems. Functional units are mounted on drawout modules for safe isolation and hot-swap maintenance, covering power distribution, motor control and capacitor compensation.
Key Technical Parameters
| Main circuit rated voltage | AC 400 / 660 V |
|---|---|
| Auxiliary circuit voltage | AC 220, 380(400); DC 110, 220 V |
| Rated frequency | 50(60) Hz |
| Rated insulation voltage | 660 V |
| Horizontal busbar current | up to 5000 A |
| Vertical busbar (MCC) current | 1000 A |
| Short-time withstand | 50 / 80 kA · 1s |
| Peak withstand | 105 / 176 kA · 0.1s |
| Withstand test (1min) | main 2500 V / auxiliary 2000 V |
| Busbar system | 3-phase 4-wire / 3-phase 5-wire |
| Standards | IEC 61439, GB/T 7251.1-2023 |
Structure & Features
- Drawout functional modules with isolation contacts and mechanical interlocks.
- Horizontal busbar and vertical MCC compartments; front access.
Application Scenarios
- Industrial motor control centers, process plants, infrastructure and commercial complexes.
Model Designation & Variants
- GCS = low-voltage withdrawable switchgear (domestic improved design).