Low Voltage Switchgear
Low voltage switchgear for 50Hz, ≤0.4kV systems, provides power distribution and protection against overload, short circuit and earth leakage.
GGD: Fixed structure, basic distribution, overload & short-circuit protection, cost-effective.
GCS: Draw-out design, easy maintenance & expansion, high safety.
MNS: Modular draw-out, high breaking capacity, for high-demand applications.
Technical Specification
| Item | GGD (Fixed Type) | GCS (Draw-out Type) | MNS (Modular Draw-out Type) |
| Rated Operating Voltage Ue | AC 380V (660V) | AC 380/400V (690V) | AC 380/400V (690V) |
| Rated Insulation Voltage Ui | 660V | 660/1000V | 690/1000V |
| Rated Frequency | 50Hz | 50/60Hz | 50/60Hz |
| Rated Current of Main Busbar | 630～3150A | 630～4000A | 630～6300A |
| Rated Current of Vertical Busbar | 400～1000A | 400～1000A | 400～2000A |
| Max. Current of Draw-out Unit | — (Fixed) | 630A | 630A |
| Rated Short-circuit Breaking Current | GGD1:15kAGGD2:30kAGGD3:50kA | 30/50kA | 50/65kA |
| Short-time Withstand Current (1s) | 15/30/50kA | 30/50kA | 50/65kA |
| Peak Withstand Current | 30/63/105kA | 63/105kA | 105/143kA |
| Impulse Withstand Voltage | 8kV | 12kV | 12kV |
| Degree of Protection (IP) | IP30 (IP20～IP40 optional) | IP40 (Internal IP20) | IP40 (Internal IP20) |
| Applied Standards | GB7251.1, IEC60439 | GB7251.1, JB/T9661 | GB7251.1, IEC60439, ABB Standard |
