Product Description
GCS low voltage withdrawable switchgear is our premium modular drawer-type power distribution product, compliant with IEC and national standards. It adopts an 8MF steel frame with three-compartment isolation, and supports up to 4000A busbar current and 80kA short-time withstand for industry-leading short-circuit resistance.
Standardized drawer units enable single faulty loop maintenance without full section power shutdown, greatly improving efficiency. It also provides optional IP30~IP40 protection, mechanical interlock for operation safety, and integrated modules for power distribution, motor control and compensation. Optimized ventilation ensures stable long-term operation, with flexible loop customization to fit different load demands.
Application Introduction
It is widely applied in scenarios requiring high power supply continuity and maintenance efficiency, such as large factory production lines, rail transit, large commercial complexes, hospital operating rooms, IDC data centers, large energy storage power stations and office building core power rooms, for centralized motor control, large-capacity power distribution and uninterrupted load power supply. Our full range of high & low voltage products can fully match GCS with KYN28 high voltage switchgear, GGD fixed cabinet and various terminal distribution boxes to realize integrated high-low voltage supply. With abundant supporting cases of new energy, rail transit and large public construction projects, we provide one-stop services including power system scheme design, complete set manufacturing, factory type test, on-site commissioning and long-term operation maintenance. Full industrial chain supporting avoids multi-party procurement, greatly shortening project delivery cycle and reducing customers’ comprehensive purchasing and management costs.
Technical Parameters
| Category | Parameter | Value |
| Electrical Data | Rated Working Voltage | AC 380V / 400V / 660V |
| Rated Insulation Voltage | 660V – 1000V | |
| Rated Frequency | 50Hz / 60Hz | |
| Max. Rated Horizontal Busbar Current | Up to 4000A | |
| Max. Rated Vertical Busbar Current | Up to 1000A | |
| Rated Short-circuit Breaking Current | Up to 50kA / 80kA | |
| Rated Short-time Withstand Current (1s) | Up to 50kA / 80kA | |
| Rated Peak Withstand Current | Up to 105kA / 176kA | |
| Rated Impulse Withstand Voltage | 12kV | |
| Power Frequency Withstand Voltage (1min) | 2500V (Main Circuit), 1760V (Auxiliary Circuit) | |
| General Data | Protection Degree | IP30 / IP40 (Standard); IP54 Optional |
| Earthing System | TT, IT, TN-S, TN-CS (3-phase 4-wire / 3-phase 5-wire) | |
| Applicable Standards | IEC 60439-1, GB 7251, JB/T 9661 | |
| Drawer Unit Type | Standard 1/2 Unit, 1 Unit, 2 Unit, 3 Unit Withdrawable Modules | |
| Environmental Conditions | Ambient Temperature | -5℃ ~ +40℃ (24h Average ≤ +35℃) |
| Altitude | ≤ 2000m Above Sea Level | |
| Relative Humidity | ≤ 50% at +40℃; Higher Humidity Allowed at Lower Temperatures (e.g., 90% at +20℃) | |
| Installation | Indoor, Vertical Installation (Inclination ≤ 5°) | |
| Cabinet & Construction | Frame Material | 8MF Open-type Cold-formed Steel, Fully Assembled / Partially Welded Structure |
| Compartment Design | Strictly Separated Functional Compartments: Unit Chamber, Busbar Chamber, Cable Chamber | |
| Cooling Design | Ventilation Slots at Top and Bottom for Natural Convection Heat Dissipation | |
| Cable Entry | Top / Bottom / Rear Cable Entry Available | |
| Surface Treatment | High-voltage Electrostatic Epoxy Powder Coating | |
| Standard Cabinet Color | RAL 7035 | |
| Standard Cabinet Dimensions | Height: 2200mm; Width: 400/600/800/1000/1200mm; Depth: 800/1000mm | |
| Series Selection Guide | GCS1 Series | Rated Current: 400/630/1000A; Short-time Withstand Current: 15kA |
| GCS2 Series | Rated Current: 1000/1600A; Short-time Withstand Current: 30kA | |
| GCS3 Series | Rated Current: 2000/2500/3150/4000A; Short-time Withstand Current: 50kA/80kA |
