Overview
GCK low-voltage withdrawable switchgear consists of two parts: the Power Distribution Center (PC) cabinet and the Motor Control Center (MCC) cabinet. It is suitable for power users such as power plants, substations, and industrial and mining enterprises, used in power distribution systems with AC 50Hz, maximum working voltage up to 660V, and maximum working current up to 3150A, for the conversion, distribution, and control of electrical energy for power distribution, motor control, and lighting equipment.
Operating Environment Conditions
1. Altitude not exceeding 2000m;
2. Ambient air temperature not exceeding +40℃, and the average temperature within 24h not exceeding +35℃, ambient air temperature not lower than -50℃;
3. Atmospheric conditions: clean air, relative humidity not exceeding 50% at a temperature of +40℃, higher relative humidity is allowed at lower temperatures, for example: 90% at +20℃;
4. Locations without fire, explosion hazard, severe pollution, chemical corrosion, or violent vibration;
5. Inclination from the vertical plane not exceeding 5°;
6. This product is suitable for transportation and storage at the following temperatures: -25℃ to +55℃, and not exceeding +70℃ for a short time (not exceeding 24h).
If the above operating conditions cannot be met, the user should raise this with the manufacturer at the time of ordering to resolve through negotiation.
Main Technical Parameters
| Rated operating frequency | 50 | |
| Rated operating voltage (V) | 380, 660 | |
| Rated insulation voltage (V) | 660 | |
| Rated operating current (A) | Horizontal busbar | 630-3150 |
| Vertical busbar | 600 | |
| Rated short-time withstand current | Horizontal busbar | 80kA (RMS)/1s |
| Vertical busbar | 50kA (RMS)/1s | |
| Rated peak withstand current | Horizontal busbar | 176kA/0.1s |
| Vertical busbar | 110kA/0.1s | |
| Main circuit connector (A) | 200, 400 | |
| Auxiliary circuit connector (A) | 10 | |
| Power frequency withstand voltage 1 minute (V) | 2500 | |
| Protection degree | IP40 | |
| Operation mode | Local, remote, automatic | |












