【Overview and Model】
GCK： G is a closed switchgear   C is extractive.  K is the control center
GCK low-voltage extraction switchgear (hereinafter referred to as switchgear) consists of power distribution center (PC) cabinet and motor control center (MCC). The device is suitable for AC 50 (60) Hz, rated working voltage less than or equal to 660V, rated current 4000A and below control and distribution system, as power distribution, motor control and lighting distribution equipment.  
GB7251.1-2013 Low Voltage Switchgear and Control Equipment, and GB/T14048.1-93 General Rules for Low Voltage Switchgear and Control Equipment. It has high breaking capacity, good dynamic and thermal stability, advanced and reasonable structure, flexible electrical scheme, series, versatility, arbitrary combination of various scheme units, a cabinet body.  
It has many advantages, such as large number of circuits, saving area, high level of protection, safety and reliability, convenient maintenance, etc.

【Structural characteristics】
It has compact structure, can accommodate more functional units in a smaller space, and saves user investment.
1、Structural versatility. The cabinet body is assembled by modular structure of C profile (E = 25mm), which is flexible in assembly.
2、Various size extraction units can be combined arbitrarily to meet the design requirements of the system.   
3、Vertical busbar and outlet line have good insulation protection, which ensures safe and reliable maintenance after cabinet.
4、Unique mechanical locking mechanism is designed. It has obvious operation, test and extraction position sign. It is safe and reliable to operate.    
5、Drawer propulsion mechanism adopts bearing rolling, which makes the operation of drawer flexible and convenient, and has strong interchangeability with drawers of the same specifications. 6. The design scheme has strong combination, and can freely combine drawer type scheme and fixed partition type scheme to meet the needs of various occasions.

【Main technical parameters】
Rated insulation voltage: Communication 660V，Communication 1000V
Rated operating voltage ：Communication 380 V ，Communication 660 V
Rated frequency ：50Hz
Rated Current of Horizontal Bus ：1250~4000A
Vertical Bus Rated Current ：1000A
Maximum Current of Feed Circuit ：2500A
Maximum current in drawer circuit ：500A
Maximum capacity of control motor ：320kW
Peak Tolerance Current of Horizontal Bus (0.1S)：63kA、105kA、176kA
Horizontal Bus Short-term Tolerance Current (1S）：30 kA、50 kA、80 kA、100 kA
Vertical Bus Peak Tolerance Current (0.1S）：63 kA、105 kA
Vertical Bus Short-term Tolerance Current （1S）：30 kA、50 kA
Rated power frequency withstand voltage （1min）：2500V
Secondary power frequency withstand voltage （1min）：2500V
Protection level ：IP30、IP40
Exterior dimension width * depth * height mm：600（800、1000）*800（1000）*2200

【Product usage environment】
1、The ambient air temperature should not be higher than + 40 C, not lower than - 5 C, and the average temperature within 24 hours should not be higher than + 35 C. If the ambient air temperature exceeds, it should be operated according to the actual situation.
2、In-house use: the altitude of the place of use shall not exceed 2000m ；
3、The relative temperature of ambient air is not more than 50% at + 40 C, and a higher relative temperature is allowed at a lower temperature, such as 90% at + 20 C. Consideration should be given to the effect of accidental condensation due to the change of temperature；
4、The slope between the installation and the vertical plane is not more than 5 C, and the whole cabinet is relatively flat (in accordance with GBJ232-82 standard);
5、The device shall be installed in a place free of severe vibration and shock and not sufficiently corrosive to cause electrical components to be subjected to corrosion；
6、Users with special requirements can negotiate with the manufacturer。