GCS Switchgear Key Applications
GCS low-voltage draw-out switchgear is suitable for power plant, petroleum, chemical, metallurgy, textile, high-rise building and other industries of power distribution system. In large power plants, petrochemical systems and other places with high degree of automation and requiring computer interface, as a three-phase AC frequency of 50(60)Hz, The rated operating voltage is 380V(400V), (660V), and the rated current is 4000A and below in the power distribution system, motor centralized control, reactive power compensation for the use of low-voltage power distribution devices.
GCS Model Code Breakdown
| G | C | S | – | □ | – | □ |
| ↓ | ↓ | ↓ | | ↓ | | ↓ |
| Enclosed switchgear | Drawout type | Electrical system | | Auxiliary circuit scheme number | | Main circuit scheme number |
GCS Performance & Compliance Standards
The design of the device meets the following criteria
IEC439-1 Low-voltage switchgear and control equipment
GB7251 Low voltage switchgear
ZBK360001 Low voltage withdrawable switchgear
GCS Structural Design – 8MF Frame & Compartment Layout
• The main frame is made of 8MF open section steel, and the two sides of the section steel have installation holes with modules of 20mm and 100mm and Φ9.2mm respectively, making the internal installation flexible and convenient;
• The main frame assembly form is designed in two ways, full assembly structure and part (side frame and beam) welded structure, for users to choose;
• Each function room of the device is isolated from each other, and its compartment is divided into function unit room, bus bar room and cable room. The function of each chamber is relatively independent;
• The ice flat main bus line is arranged in a flat mode behind the cabinet to enhance the ability of the bus to resist electric power, which is the basic measure to make the main circuit of the device have high short-circuit strength;
• The design of the cable compartment makes it very convenient for the cable to enter and exit.
• Size of universal cabinet (see table below)
| Item | Argument |
| High | 2200 | | | | | | | | | |
| Wide | 400 | | 600 | | 800 | | | 1000 | | |
| Deep | 800 | 1000 | 800 | 1000 | 600 | 800 | 1000 | 600 | 800 | 1000 |
GCS Basic Parameters – Voltage, Current & Protection Rating
| Item | Argument |
| Main circuit rated voltage (V) | AC 380(400),(660) |
| Auxiliary circuit rated voltage(V) | AC 220、380(400) | DC 110/220 |
| Rated frequency(Hz) | 50(60) |
| Rated insulation voltage(V) | 660(1000) |
| Rated current(A) | Horizontal bus,Vertical bus(MCC) | ≤4000、1000 |
| Bus rated short-time withstand current (kA/1s) | 5080 |
| Bus rated peak withstand current(kA/0.1s) | 105176 |
| Power frequency test voltage(V/1min) | Main circuit,auxiliary circuit | 2500、1760 |
| Bus bar | Three-phase four-wire system,three-
phase five-wire system | A,B,C,PEN、A,B,C,PE,N |
| Class of protection | | IP30,IP40 |
FAQs
1: What industries is the GCS switchgear best suited for?
The GCS low voltage switchgear is ideal for your power plant, petrochemical, metallurgical, and high-rise building distribution systems. Its withdrawable design and computer-interface capability make it especially suitable for your automated industrial environments requiring centralized motor control.
2: What is the difference between GCS drawout type and fixed type switchgear?
GCS drawout (withdrawable) type allows you to remove and replace functional units without shutting down the entire system—minimizing your downtime. Fixed type units are permanently installed, offering lower cost but requiring full panel de-energization for maintenance. Choose drawout for critical 24/7 operations.
3: What is the maximum rated current the GCS switchgear supports?
The GCS supports up to 4000A on horizontal busbars and 1000A on vertical busbars (MCC section). Your system can handle rated short-time withstand current of 50/80kA for 1 second, with peak withstand current of 105/176kA. These ratings cover most industrial LV distribution scenarios.
4: Does the GCS switchgear comply with IEC standards?
Yes. The GCS is type-tested per IEC 61439-1 (low voltage switchgear and controlgear assemblies) and also meets GB7251 and ZBK36001 Chinese national standards. Full compliance documentation is available for your project review and approval. →
View our certifications 5: What protection rating (IP) options are available?
The GCS switchgear is available in IP30 and IP40 configurations. IP30 suits your indoor controlled environments; IP40 provides additional dust protection for harsher industrial settings. We can customize higher IP ratings for your specific site conditions.
6: Can I customize the GCS cabinet dimensions for my installation space?
Yes. Standard GCS height is 2200mm, with width options of 400/600/800/1000mm and depth options of 600/800/1000mm. As the direct manufacturer, we can adjust dimensions, busbar configurations, and functional unit layouts to match your exact installation constraints. →
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