Circuit Breaker Model And Meaning

Question 1: What does the model of the circuit breaker mean? According to the provisions of national technical standards, the circuit breaker model is generally composed of text symbols and numbers in the following way:
   Its representative meaning is:
   ① - Product letter code, represented by the following letters: S - less oil circuit breaker; D - more oil circuit breaker; K - air circuit breaker; L - sulfur hexafluoride circuit breaker; Z - vacuum circuit breaker; Q - gas production Circuit breaker; C - magnetic blown circuit breaker.
   ②—The installation site code; N—indoor, W—outdoor.
   ③—Sequence number of the design series; represented by numbers 1, 2, 3....
   ④―Rated voltage, KV.
   ⑤—Other supplementary work characteristic marks, G—improved type, F—phase separation operation.
   ⑥―Rated current, A.
   ⑦―Rated breaking current, KA.
   ⑧―Special environment code. Like DZ47-63 refers to the open circuit. If DZ47LE-63 has leakage current. C16: Refers to the current 16A. Generally, households use C10-16, and engineering uses more than C32.
 
    Question 2: The meaning of the circuit breaker model S—oil-less circuit breaker;
   D - Multi-oil circuit breaker;
   K - air circuit breaker;
   L - sulfur hexafluoride circuit breaker;
   Z - vacuum circuit breaker;
   Q―Gas production circuit breaker;
   C - Magnetic blown circuit breaker.
   ②―Installation location code:
   N - indoors;
   W-outdoor.
   ③―Design series sequence number:
   Represented by numbers 1, 2, 3...
   ④―Rated voltage, KV.
   ⑤―Other supplementary work characteristics signs:
   G - improved type;
   F - split-phase operation.
   ⑥―Rated current, A.
   ⑦―Rated breaking current, KA.
   ⑧―Special environment code.
   Low voltage circuit breaker:
   DW10 series frame type automatic switch;
   DWX15, DWX15C series universal current limiting circuit breaker;
   DW17 (ME) series universal circuit breaker;
   DZ10 series plastic shell type automatic switch;
   DZ15 series plastic case circuit breaker;
   DZX10 series plastic case current limiting circuit breaker;
   DZ20 series plastic case circuit breaker;
   DZ25 series plastic case circuit breaker;
   High voltage circuit breaker:
   DW series high voltage outdoor installation multi-oil circuit breaker;
   SW series high voltage outdoor installation less oil circuit breaker;
   SN series high voltage indoor installation less oil circuit breaker;
   ZW series high voltage outdoor vacuum circuit breaker;
   ZN series high voltage indoor vacuum circuit breaker;
   LW series high voltage outdoor installation SF6 circuit breaker;
   LN series high voltage indoor installation SF6 circuit breaker;
   Note: 1. Some of the models here have been discontinued, but there are still some models in use. 2. Foreign imported and joint venture models are not included.
   Replenish:
   GW-110(III)W-630、
   G------isolating switch
   W------Outdoor use
   110---------Suitable for systems with a rated voltage of 110KV
   (Ⅲ)-------Type III (design serial number)
   630---------Suitable for systems with rated current below 630A
   GN22-10/2000、
   G------------isolating switch
   N------------Indoor use
   22----------Design serial number
   2000-----------Suitable for systems with rated current below 2000A
   SW2-110II
   S-------------Oil less circuit breaker
   W-------------Outdoor use
   2------------Design serial number
   110----------Suitable for systems with a rated voltage of 110KV
 
    Question 3: What is a circuit breaker, and what does the model of the circuit breaker mean? This question is quite professional, and people who have not been exposed to it will basically not understand it. To be honest, I don't know much about isolation transformers, but I am very interested in seeing this problem. Let's discuss and learn about isolation transformers together! Circuit breaker (English name: circuit-breaker, circuit
   Breaker) refers to a switching device that can close, carry and break current under normal circuit conditions and can close, carry and break current under abnormal circuit conditions within a specified time. Circuit breakers can be used to distribute electric energy, start asynchronous motors infrequently, protect power lines and motors, and automatically cut off the circuit when they are severely overloaded, short-circuited, or under-voltage. Its function is equivalent to a fuse-type switch. Combination with overheating and underheating relays, etc. Moreover, there is generally no need to change parts after breaking the fault current. At present, it has been widely used.
   Circuit breakers are divided into high-voltage circuit breakers and low-voltage circuit breakers according to their scope of use. The division of high and low voltage boundaries is relatively vague. Generally, those above 3kV are called high-voltage electrical appliances.
   In modern society, electricity is inseparable from fields such as industry, agriculture, transportation, national defense, culture, education and health, finance, commerce, tourism services, and people's lives. Power distribution is an extremely important link in the generation, transmission and use of electricity. The power distribution system includes transformers and various high and low voltage electrical equipment, and the low voltage circuit breaker is an electrical appliance with a large amount of use. According to the provisions of national technical standards, the circuit breaker model is generally composed of text symbols and numbers in the following way: its representative meaning is: ① - product letter code, expressed by the following letters: S - oil-less circuit breaker; D - oil-rich circuit breaker ; K—air circuit breaker; L—sulfur hexafluoride circuit breaker; Z—vacuum circuit breaker; Q—gas circuit breaker; C—magnetic blowing circuit breaker.
   ②—The installation site code; N—indoor, W—outdoor.
   ③—Sequence number of the design series; represented by numbers 1, 2, 3....
   ④―Rated voltage, KV.
   ⑤—Other supplementary work characteristic marks, G—improved type, F—phase separation operation.
   ⑥―Rated current, A.
   ⑦―Rated breaking current, KA.
   ⑧―Special environment code.
   Like DZ47-63 refers to the open circuit. If DZ47LE-63 has leakage current. C16: Refers to the current 16A. Generally, households use C10-16, and engineering uses more than C32.
   That's all for the circuit breaker. I learned a lot while looking for information. I don't know if the answer given is what I want? I will continue to work hard~
 
    Question 4: The model meaning of DZ47-60 circuit breaker 60 is the rated current 60A
   4000A is the maximum current that can be broken
 
    Question 5: What is the meaning of the circuit breaker dz20l-250/4300 model
 
    Question 6: What does the circuit breaker model DZ47-63 mean? It is a high-section circuit breaker model C45 imitating the French Merlin Gerin company. After domestic production, it is called DZ47, and 63 is the maximum rated current
 
    Question 7: What is the role of the model of the circuit breaker and what does it represent? Are there any regulations? The model of the circuit breaker is mainly to determine the brand and basic technical parameters. The models of each manufacturer are different, but the meanings of the approximate numbers and symbols are similar. Generally, they are specifications, section capacity, frame level, rated current, accessories The form, etc. need to be determined in conjunction with the product sample. In the early electrical specifications, there was a unified specification for the model. However, due to the large number of domestic manufacturers, the relatively good manufacturers have their own technical patents and characteristics, so the naming is general. Combined with the original habits, it is matched with the letters marked by the manufacturer.
 
    Question 8: What are the models of ABB's circuit breakers? What do the letters and numbers of the corresponding models mean? According to the provisions of national technical standards, ABB circuit breaker models are divided into 7 categories, and the corresponding model letters and numbers include the following:
   1. The letter code of the product is represented by the following letters:
   S - less oil circuit breaker;
   D - Multi-oil circuit breaker;
   K—air circuit breaker;
   L—Sulfur hexafluoride circuit breaker;
   Z—vacuum circuit breaker;
   Q—gas circuit breaker;
   C—Magnetic blowing circuit breaker.
   2. Code of installation location; N—indoor, W—outdoor;
   3. The sequence number of the design series; represented by numbers 1, 2, 3...;
   4. Rated voltage, KV;
   5. Other signs of supplementary working characteristics, G—improved type, F—phase-separated operation;
   6. Rated current, A;
   7. Rated breaking current, KA.

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