Draw-Out Switchgear Cabinet
Zhejiang Tianrun Electric Co., Ltd. is one of the leading manufacturers and suppliers of draw-out switchgear cabinet in China. We are committed to providing high quality customized products with competitive price. We warmly welcome you to buy bulk advanced draw-out switchgear cabinet from our factory. Also, quotation is available.
Product Overview
The GCK series motor control center is a withdrawable switchgear, consisting of motor control units combined with other functional units, densely installed in a closed metal cabinet. Cabinets are interconnected via horizontal busbars set above the cabinet, while units of the same cabinet are connected in parallel on the vertical busbars; the cabinet is divided into four mutually isolated areas - horizontal busbar, vertical busbar, current, and equipment installation areas - so that a fault in any unit does not affect others, preventing the spread of accidents. Equipped with a comprehensive grounding system and protective circuit, the product allows functional units to interrupt short-circuit currents as specified and features three-stage protection on incoming units, with an IP40 protection level for supply reliability and personal safety.
Type Designation
Product Features
- Well-arranged busbar system: Cabinets are interconnected via horizontal busbars set above the cabinet, with functional units of the same cabinet connected in parallel on the vertical busbars, ensuring flexible and reliable power distribution.
- Segregated areas, fault isolation: The cabinet is divided into four mutually isolated areas - horizontal busbar, vertical busbar, current, and equipment installation areas - so that a fault in any unit does not affect others, preventing the spread of accidents.
- Modular combined structure: Consists of motor control units combined with other functional units, densely installed in a closed metal cabinet for efficient space utilization.
- Comprehensive protection: Equipped with a complete grounding system and protective circuit, allowing functional units to interrupt short-circuit currents as specified, with three-stage protection on incoming units for reliable power supply.
- Reliable protection level: Adopts the IP40 protection level, achieving corresponding protection whether all doors and protective plates are closed or functional units are withdrawn, ensuring personal safety.
Technical Parameter
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Items |
Standard |
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Standards-compliant |
IEC439, GB 7251.1 |
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Protection level |
IEC IP40, GB/T 4208 |
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Rated operating voltage (V) |
||
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Frequency (Hz) |
50/60 |
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Rated insulation voltage (V) |
660 (customized) |
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Control motor capacity (kW) |
0.45-155 |
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Mechanical lifetime (cycles) |
500 |
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Rated current (A) |
Horizontal busbar |
1600, 3150 |
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Vertical busbar |
630 |
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Main circuit contact connector |
16, 250, 630, 400 |
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Auxiliary circuit contact connectors |
20 |
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Maximum current of the feeder circuit |
160, 400, 630, 250 |
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Rated short-time withstand current (kA) |
Electric circuit |
1000, 1600-2000, 2500 |
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Effective value |
50, 80 |
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Effective value |
105, 176 |
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Withstand voltage (V/min) |
2500 |
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Note: The technical parameters of our transformers are for reference only. Customized solutions are available, with specifications adjustable according to project‑specific requirements.
Structure Features
Environment
- Ambient temperature: Shall not exceed +40℃ or be lower than -5℃, with a 24-hour average not exceeding +35℃.
- Location and altitude: For indoor use, with the altitude of the installation site not exceeding 2000m.
- Relative humidity: Shall not exceed 50% at a maximum temperature of +40℃.
- Installation conditions: The tilt with the vertical plane during installation shall not exceed 5%, and the mounting surface of the cabinet shall be relatively flat.
- Site requirements: The device shall be installed in a location without severe vibration and impact, and where electrical components are not susceptible to corrosion.
- Note: Users with special requirements can negotiate with the manufacturer for a solution.
Application
Industrial and Mining Enterprises
Centralized control, protection and distribution for motors of production equipment.
01
Power Plants and Substations
Auxiliary power distribution and control of station equipment.
02
Petrochemical Industry
Centralized motor control in production areas, ensuring continuous production operation.
03
Metallurgical Industry
Motor control for large power-consuming equipment such as rolling mills, fans and pumps.
04
Buildings and Public Facilities
Control and distribution for power equipment such as pumps, fans and air-conditioning units in buildings.
05
The Different among GCS, GCK, MNS
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Dimension |
GCK |
GCS |
MNS |
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Positioning |
Economy type |
Standard type, cost-effective |
High-end type |
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Structural module |
Conventional structure, taller drawer units |
20mm module commonly used in China, standard drawer unit |
25mm module (C-profile), highly modularized |
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Drawer options |
Standard drawers |
Minimum 1/2 drawer |
Minimum 1/4 drawer, higher circuit density |
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Busbar system |
Horizontal busbar at cabinet top; vertical busbar without flame-retardant functional board |
Horizontal busbar at rear; vertical busbar mounted in flame-retardant plastic functional board |
Horizontal busbar rear-exit; vertical busbar in flame-retardant plastic functional board |
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Interlocking |
Relatively simple |
Mainly relies on the switch's own interlocking |
Additional interlocking mechanism on drawers for enhanced protection |
★ How to choose? Choose GCK for general projects, GCS for balanced performance and cost, and MNS for critical loads and high reliability requirements.
FAQ
Q: Why is it called switchgear?
A: Because it is a complete set of electrical equipment ("gear") built around switching devices ("switch") for making, carrying and breaking electrical circuits.
Q: What is Draw-Out Switchgear Cabinet?
A: The low-voltage switchgear assembly whose functional units are mounted as drawers that can be withdrawn or inserted as a whole; withdrawing a unit disconnects both main and auxiliary circuits, facilitating maintenance and replacement with minimized downtime.
Q: What are the drawbacks of switchgear?
A: Compared with fixed-type assemblies, switchgear is more complex in structure, higher in cost and larger in footprint, and demands stricter operating environments and regular maintenance such as inspection of drawer mechanisms, contacts and interlocking devices.
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