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    there are many models of switchgear which are popular on the market. to sum up in the following models switchgear and show advantages and disadvantages as your reference.:   
 ggdseries:

    ggd low-voltage power distribution equipment for substations, power plants, industrial enterprises and other power users of ac 50hz, rated working voltage 380v, rated current distribution system 1000-3150a as power, lighting and electrical power generation and distribution equipment conversion, distribution and control purposes.    

    ggd low voltage distribution cabinet is based on the requirements of the department of energy, the majority of electricity users and design department, according to the security, economic, rational and reliable design principles of new low-voltage distribution cabinet. products with high breaking capacity, dynamic thermal stability, electrical program flexible combination of convenience, family, practical, novel structure, high level of protection. can be used as a low voltage switchgear replacement products.structural features

     ggd ac low voltage distribution cabinet cabinet cabinet adopt a common form of cold-formed steel frame with 8mf local welding assembled, mounting holes 20 and mold, common factor is high. 

    ggd cabinet full account of the heat. in the upper and lower ends of the cabinet has a different number of cooling slots, when the electrical components inside the heat, the heat rises, discharged through the top slot, while the cold wind constantly added into the cabinet from the bottom of the slot, since the sealing of the cabinet bottom-up and form a natural ventilation channel, to achieve the purpose of cooling.

    ggd cabinet in accordance with modern industrial product design requirements, the method of golden ratio designed cabinet shape and size of each part of the split, so that the entire cabinet nice, new look.

    cabinet top cover can be removed when necessary, to facilitate site assembly and adjustment of the main bus, the four corners of countertops with rings for lifting and loading.

    cabinet protection rating of ip30, users can choose between ip20-ip40 according to environmental requirements.

gckseries

    gck g is enclosed switchgear withdrawable k c is the control center
    gck low-voltage withdrawable switchgear (hereinafter referred to as switch cabinet) consists of two parts, power distribution center (pc) cabinet and motor control center (mcc). the device is suitable for ac 50 (60) hz, rated working voltage is less than equal to 660v, rated current 4000a and below the control and distribution system, as power distribution, motor control and power distribution equipment, lighting, etc.    
    gck switch cabinet meet iec60439-1 "low-voltage switchgear and control equipment", gb7251.1-1997 "low-voltage switchgear and control equipment", gb / t14048.1-93 "low-voltage switchgear and control equipment general" and other standards . and it has a high breaking capacity, dynamic thermal stability, advanced and reasonable structure, flexible electric scheme, series resistance, versatility, any combination of program modules, one cabinet. loop accommodated more, save floor space, high degree of protection, safe, reliable, easy maintenance, etc.
 

structure features

1、entire cabinet assembly-type structure, a/d-hole mounting parts versatility and applicability, high degree of standardization.
2、upper cabinet for the front part of the bus-bar chamber, for electrical, cable into the outlet at the back room, plate or insulated panels for isolation between the rooms to ensure safety.
3、mcc cabinet drawer small room's door with the circuit breaker or isolating switch handle is equipped with mechanical interlocks, open door can only handle in off position.
4、electric switches, contact switchgear and mcc cabinet drawer has three positions: position disconnected, test location, location.
③series
    gcs type low-voltage withdrawable switch cabinet used in three-phase ac frequency 50hz, rated working voltage of 400v (690v), power up to 4000a rated current as power, power distribution and motor control, compensation purposes. widely used in power plants, petroleum, chemical industry, metallurgy, textile, high-rise buildings and other places, can also be used in large power plants, petrochemical system, and a high degree of automation, requires sites interface with the computer. implementation of the standards: this product meets the gb7251.1-1997 low-voltage switchgear and controlgear and jb/t9661-1999 the requirements of the low voltage withdrawable switchgear.

structural features 
1、steel framework with 8mf opening, the main framework module is installed on e=20mm and 100mm 9.2mm mounting holes makes assembling the framework is flexible and convenient.
2、switch the function room isolated from each other, the compartment is divided into functional units, bus and cable rooms. function of each room independently.   
    3、horizontal bus adopts the cabinet back arrangement in order to enhance the capacity of bus electric power, is to make the main circuit with high short-circuit strength ability of basic measures.
    4、design makes cables, cable compartment upper and lower access are very convenient.
    5、the height of the drawer module is 160mm. change only changes in the height of the drawer, its width and depth dimensions unchanged. drawer of the same functional unit has good interchangeability. unit loop rated current 400a and below.   
    6、drawer panels, collection, testing, taking the position clearly marked. drawer unit equipped with a mechanical interlocking device. 1-drawer unit as the main body, with withdrawable and fixed, you can mix, random.  
    7、enclosure protection class ip30 ip40, you can according to user's needs.
④mnsseries:
    mns type low voltage taking type sets switch equipment (following referred to switch cabinet) for adapted power industrial development of needs, reference abroad mns series low voltage switch cabinet design and be improved development of senior type low voltage switch cabinet, the products meet national standards gb7251, and vde660 and zbk36001-89 low voltage taking type sets switch equipment, and international standards iec439 provides mns type low voltage switch cabinet adapted various power, and distribution of need, can widely for power plant, and substation, and industrial and mining enterprises, building hotels, municipal construction and other low-voltage distribution system.

structural features

1. the mns low voltage switch cabinet frame for composite structure, basic skeleton formed by the c-shaped steel assembly. frame structure after all galvanized, by self tapping lock screw or class 8.8 hexagon bolt solid connections into basic frames, plus corresponds to programme changes, partitions, mounting brackets and bus functional unit and other components are assembled into a complete switch cabinet.  switch cabinet dimensions, component size, compartment sizes are modular (e=25mm). 
2. the mns-modular low-voltage switch cabinets each cabinet room separated into three, namely horizontal bus (in rear), drawer cabs (in front), the cable compartment (in the right side of the lower part of the cabinet or cabinet). between the chamber and separated by steel or high-strength fire retardant plastic panels, upper and lower drawer there is a metal plate with ventilation holes between isolation, for the effective prevention of switch failure caused by arcing or bus and other accidents caused by short circuit.
3. the mns low voltage switch cabinet of structures designed to meet a variety of access route requirements: progress and get ahead on the next out, down into the upper out and lower it into the next.
4. compact design: in a smaller space to accommodate more features, unit
5. structural versatility, flexible assembly, e=25mm a/d, structure and the withdrawable unit can be any combination, to meet the needs of system design
6. busbar with high intensity flame retardant, high dielectric strength of plastic panels protected with arc fault resistance performance, running safe and reliable maintenance
7. drawers of various sizes of mechanical interlocking mechanism meeting the prescribed standards, connections, experimental, separation of three distinct locations, safety and reliability.
8.the use of standard modules: each can form protection, operation, transformation, controlling, regulating, measuring, indicating, standard cells, based on the requirements of any assembly.
9.the use of high intensity flame retardant engineering plastics, effectively strengthening the protective security.
10. universal, high standardization, easy installation. with a reliable quality assurance.
11. the cabinet can be selected according to the different requirements of working environment with the censure of protection.
12.  protect the continuity and reliability of equipment 

⑤mcseries:

use：

mcs intelligent type low voltage taking type switch cabinet is a fusion has other low voltage products of advantages and development of senior type products, applies yu power plant, and oil chemical, and metallurgical, and telecommunications, and light, and textile, and senior building and other civilian, and industrial and mining enterprises of three-phase exchange 50hz,60hz, rated voltage 380v, rated current 4000a and the following of three-phase four (five) line business power system distribution system, in large power plant, and petrochemical, and telecommunications system, automation degree high, requirements and computer interface of places, as hair, power distribution and motor control and reactive power compensation for low-voltage distribution equipment.

structural features：

①the basic framework of the switchgear type c (or 8mf) open steel assembled together, unified appearance, high precision and interchangeability of the drawer.

       ②mcc cabinet width only 600mm, use of space, which can accommodate more functional units, saving land for construction.
       ③components within the cabinet according to the different needs of users, configuring various types of switches, to ensure high reliability of the product.
       ④automation interface device can be reserved, intelligent modules can be installed in the switch cabinet and realize remote, telemetry, remote control and remote control functions.
       ⑤drawer can be divided into functional units mcci, mccii, mcciii three.
       mcci-type: drawer width 600mm height 180mm,360mm,540mm three types of cabinets can be installed with a height of 1800mm, the desired drawer size are combined, can carry up to 10 units, suitable for high current motor control center and feeder circuits.
      mccii type: drawer width 600/2mm, high 200mm, installation height is 1800mm, the desired drawer size are combined, can carry up to 18 units, unit applicable to 100a.
      mcciii type: drawer width 600/2mm, high 180mm,360mm,540mm three installation height is 1800mm, the desired drawer size are combined, can carry up to 20 loop applies to unit 100a.
     ⑥operation institutions: each drawer shang are with a specifically design of operation institutions, for points broken and closed switch, and has mechanical joint lock, variety anti-errors operation function, mcci type drawer a "disconnect", and "test", and "work", and "moved out" four a location of positioning device, drawer for shake into structure, mccii type, and mcciii type drawer unit for push pulled type, set has positioning device, and has anti-errors operation function.
ii. the difference between various types of switch cabinet

ggd was fixed cabinets, gck, gcs, mns is the drawer cabinet. gck, gcs, mns cabinet drawer bodies are different; gcs can only do one side cabinet operations cabinet, cabinet depth: 800mm, can do double-sided action of mns cabinet cabinet, cabinet depth: 1000mm

differents：

table 1
 

module: gck (senyuan) the smallest drawer unit 1 modules: gcs smallest drawer units 1/2 a/d, mns (import technology of abb) the smallest drawer unit 1/4 module

bus: the horizontal bus of mns, gcs is after the front left of the drawer unit, right before the cable outlet room partitions, they are vertical bus assembly in flame retardant plastic panels are more reliable. gck horizontal bus is located on top of the cabinets, vertical bus no flame retardant plastic panels that cable outlet can be out or cable outlet on the right side, but different drawer bodies and gcs, mns, is relatively simple.

drawer: gcs can only have a minimum of 1/2 drawer, mns 1/4 drawer, mns drawers have interlocking mechanism, and gcs just switches itself 

gcs and mns differents

1，origin: the gcs is designed and developed by china. mns is imported from abb company. gcs is put on the market starting from 96, is modelled on the mns in many quarters, such as the horizontal bus, and out of line.

2，steel-assembled: the gcs consists of 8mf (ks) steel assembled together, and mns is c (kb) steel erection. speaking from strength of gcs is superior to the mns. but speaking from the beautiful, mns to be better looking than gcs, many manufacturers are using gcs c profile. gcs original design max can do 4000a, and mns can reach higher, after many improvements gcs now achieved 6300a.

3,drawer bodies: gcs rotating propulsion mechanism (cjg-1~3), while the mns is the interlock. compared with gcs mns plug the drawer the drawer a little more effort.

4,install module: the mns cabinet install/d is 25mm and the gcs is 20mm,gcs you can do 11 drawer, mns can do 9, mns can do double-sided counters (positive and negative loading drawer). gcs can do a maximum 22-drawer, and mns to do 72 drawers (gcs mns unit one-fourth no drawers). mns has advantages in little current. gcs some advantage in high current.

advantages and disadvantages
general: draw more local, easy to maintain, and outlet circuits, but the cost of expensive and less relative to the stationary outlet circuit, covers more. if customers with too little to do fixed to change the extraction type.
ggd type ac low-voltage switch cabinet: the switchgear has a reasonable, easy installation and maintenance, protection performance, high breaking capacity, capacity, competence, and dynamic stability, electrical scheme advantages of wide applicability can be use as a substitute.
disadvantages: less loop, units cannot be any combination, and covers an area of, and cannot contact the computer.

gck switch cabinet and have a breaking capacity of high dynamic and thermal stability, structure reasonable, flexible electric scheme, a series of units in any combination, versatility, a variety of programmes. a cabinet, accommodate more loops, save covers an area of, high degree of protection, safe, reliable, convenient maintenance and so on.

      disadvantages: horizontal bus located in the top vertical bus no flame retardant plastic panels that cannot contact the computer.

gcs low voltage draw switch cabinet: with high technical performance indicators, which can meet the needs of power market development, and to compete with imported products. based on the security, economic, rational and reliable design of new type low-voltage withdrawable switch cabinet, also has broken, making capacity high electrical programme, good thermal stability, flexible, convenient combination, series of practical features, novel structure, degree of protection.

disadvantages：

product advantages：

　　◆　compact design: in a smaller space can accept more functional units.

　　◆　structure strong and flexible assembly: 25mm for module c-profiles can meet a variety of structures, protection level, and the use of environmental requirements.

　　◆　standard module: each can form protection, operation, convert, control, regulation, directives and other standard cell, users can choose any as needed assembly.

　　◆　high technical performance. main parameter of contemporary technology.

　　◆　compression site. high degree of three can be greatly compressed storage and production sites.

　　◆　easy installation. without the use of special complexity

disadvantages：

advantages of mcs type low-voltage withdrawable switch cabinet:

（1）cabinet assemble them using c-steel, unified appearance, high precision and interchangeability of the drawer;
    （2）mcc cabinet width only 600mm, and the use of capacity is large, can accommodate more functional units, saving construction land;
    （3）components within the cabinet according to the different needs of users, and configure various types of switches, to better ensure high reliability.
    （4）this device can set aside the automation interface can also be installed in the switch cabinet module, realize remote, telemetry, remote control and other "remote control" function and control equipment
disadvantage: high cost for small and medium users have some difficulty