Low Voltage Switchgear & Distribution Panels
GCK low-voltage withdrawable switchgear set of switchgear is suitable for low-voltage power distribution system with AC 50Hz and rated working voltage 380V. It contains the functions of power center (PC) and motor control center (MCC), and all technical parameters have reached the national standard, featuring advanced structure, beautiful appearance, high electrical performance, high protection level, safety and reliability, and convenient maintenance, etc. It is an ideal distribution device for low-voltage power supply system in the industries of goldsmithing, petroleum, chemical industry, electric power, machinery, and textile.
This product complies with IEC-439, GB7251.1 standard.
1. GCK1andGCJ1are assembled combination structure, the basic skeleton is made of specialized profiles and assembled.
2. The cabinet skeleton, part dimensions and opening dimensions are varied according to the basic module E=25mm.
3. In the MCC program, the cabinet is divided into five areas (rooms): horizontal busbar area, vertical busbar area, functional unit area, cable room, neutral ground busbar area. Each area is isolated from each other to ensure the normal operation of the line to effectively prevent the expansion of the fault.
4. Since all structures of the frame are connected by screws, welding distortion and stress are avoided and accuracy is improved.
5. The parts are universal, applicable and highly standardized.
6. Functional unit (drawer) extraction, insertion for the lever operation, coupled with the configuration of rolling bearings to operate lightweight, reliable.
1. The altitude shall not exceed 2000 meters.
2. The ambient air temperature shall not exceed+40℃, not be lower than-5℃, and the average temperature within 24 hours shall not exceed+35℃.
3. Atmospheric conditions: The air is clean, and the relative humidity does not exceed 50% at a temperature of+40℃. Higher relative humidity is allowed at lower temperatures, For example, it is 90%at+20℃.
4. Places without fire, explosion hazards, severe pollution, chemical corrosion, and severe vibration.
5. The inclination to the vertical plane shall not exceed 5°.
6. The control center is suitable for transportation and storage processes at temperatures ranging from -25℃ to +55℃, and within a short period of time (not exceeding 24 hours) not exceeding+70℃.
| Protection class | IP40、IP30 |
| Rated operatingvoltage | AC、380(V) |
| Frequency | 50Hz |
| Ratedinsulation voltage | 660V |
| Working condition | |
| Environment | Indoor |
| Altitude | ≤2000m |
| Ambient temperature | -5℃~+40℃ |
| Understorage and transportation conditions,the lowest temperatureis | -30℃ |
| Relative humidity | ≤90% |
| Control motor capacity(kW) | 0.4~155 |
| Rated current(A) | ||
| Horizontal bus | 1600、2000、3150 | |
| Verticalbusbar | 630、800 | |
| Main circuit contact connector | 200、400 | |
| Feed circuit | PC cabinet | 1600 |
| Maximum current | MCC cabinet | 630 |
| Receivingcircuit | 1000、1600、2000、2500、3150 | |
| Rated short-time withstand current(kA) | ||
| Effective value | 50、80 | |
| Peak value | 105、176 | |
| Powerfrequency withstand voltage(V/1min) | 2500 | |
Incoming, busbar cabinets
PC cabinet 2200*600(800,1000)*1000
MCC cabinet 2200*600*1000
Drawer height 160 240 320 400 480 560 640
Receiving or feeding power 600 486
Powered or female connection 800 686
Powered or female connection 1000 886
Note: The H of the combinable functiona lunit of the outlet cabinetis 1600, or up to 1840 if the utility power supply is not used.
Q1: What are the main applications of the GCK Withdrawable Switchgear?
A: The GCK series is highly versatile and is widely used as a Power Distribution Center (PC) and Motor Control Center (MCC). It is ideal for facilities that require high continuous power reliability and minimal downtime, such as power plants, petrochemical refineries, metallurgy plants, large-scale manufacturing facilities, and high-rise commercial buildings.
Q2: What international electrical standards does your GCK switchgear comply with?
A: As a professional manufacturer, we ensure our GCK completely meets stringent international standards, including IEC 61439-1 & 2 (Low-voltage switchgear and controlgear assemblies). It also features excellent high breaking capacity and dynamic thermal stability for robust performance.
Q3: What is the main advantage of a "Withdrawable" (drawer-type) design compared to a fixed-type switchgear?
A: The biggest advantage is minimized downtime and maximum safety. If a functional unit (like a motor starter) fails, the withdrawable drawer can be safely pulled out and replaced with a spare unit in minutes without de-energizing the entire switchboard. This is crucial for continuous industrial processes.
Q4: How does the GCK switchgear ensure operator safety during maintenance?
A: Safety is engineered into every component. Our drawers feature strict mechanical interlocks. The drawer cannot be withdrawn or inserted while the main switch is in the "ON" position. Additionally, the compartments are fully segregated, preventing accidental contact with live busbars when a drawer is removed.
Q5: What Forms of Internal Separation do your GCK panels provide?
A: To meet diverse safety requirements, our GCK modular switchgears are typically configured with Form 3b or Form 4b internal separation. Form 4b ensures the utmost safety by completely isolating the busbars, functional units (drawers), and cable terminals from each other.
Q6: Are the withdrawable drawer units of the same specification interchangeable?
A: Yes, absolutely. Because we manufacture the enclosure frameworks and drawer modules with high-precision CNC punching and bending machines in our facility, all drawer units of the same size and electrical scheme are 100% physically and electrically interchangeable, ensuring seamless maintenance.
Q7: Can you customize the drawer dimensions and internal components based on our Single Line Diagram (SLD)?
A: Yes. We offer fully modular customization. Drawers are available in various standardized module heights (e.g., 8E/4, 8E, 16E, 24E) to accommodate different current ratings. Our engineering team will configure the exact drawer sizes, internal breakers, contactors, and thermal relays precisely according to your project's Single Line Diagram (SLD).
Q8: Can we specify international brands for the internal circuit breakers and contactors?
A: Yes, we are highly flexible. To match your local maintenance preferences and consultant requirements, we regularly integrate top-tier brands like Schneider Electric, ABB, and Siemens. We can also utilize reliable Chinese Tier-1 brands if you are looking for a more cost-effective yet dependable solution.
Q9: Do you conduct Factory Acceptance Testing (FAT) before exporting the switchgear?
A: Thorough testing is mandatory at our factory. Before packaging, every GCK switchgear undergoes a rigorous FAT, including mechanical operation tests of the drawers (insertion/withdrawal force), electrical continuity tests, dielectric withstand voltage tests, and interlocking mechanism verification. We provide a complete test report with the shipment.
Q10: How do you package the multi-column GCK switchgears to prevent damage during ocean freight?
A: We use robust, export-grade seaworthy packaging. The switchgear columns are segmented, vacuum-sealed with desiccants to prevent moisture corrosion, and securely bolted onto heavy-duty, fumigation-free wooden pallets. We then enclose them in strong wooden crates lined with shock-absorbing foam to guarantee safe arrival at your international site.
