Low-voltage circuit breaker (once called automatic switch) is a kind of switching appliance which can not only connect and disconnect normal load current and overload current, but also connect and disconnect short-circuit current. The low-voltage circuit breaker not only plays a control role in the circuit, but also has certain protection functions, such as overload, short circuit, undervoltage and leakage protection. There are many kinds of low-voltage circuit breakers, which are selective (the parameters of protection device can be adjusted) and non-selective (the parameters of protection device can be adjusted). According to the extinguishing medium, they are divided into air type and vacuum type (most of them are air type at present). Low-voltage circuit breakers have a wide range of capacities, ranging from 4A to 5000A. Low-voltage circuit breakers are widely used in the power control of feeders at all levels of low-voltage distribution system, various mechanical equipment and the control and protection of power terminals.
Ten brands of low-voltage circuit breakers: Zheng Tai, Renmin, Tianzheng, Lonon, Rogland, Dingta, Changzheng, Daquan, Changshu and Yang Min. Common domestic brands: Shanghai People's Electric Appliances, Zheng Tai, Delixi, Changshu, Tianzheng, Shenyang Wofu and Tianshui.
Shanghai Renmin Electric Appliance Zhengtai Delixi Changshu Tianzheng Shenyang Siwo
Low-voltage electrical appliances (circuit breakers, molded cases, dual power supplies, frame switches, contactors, relays) are well-known electrical brands, and commonly used imported brands are Schneider ABB, Siemens Fuji Hagrid TCL, and Muller.
Commonly used domestic brands: Shanghai People's Electrical Appliance Zheng Tai Delixi Changshu Tianzheng Shenyang Siwo Tianshui
At present, the brands of low-voltage circuit breakers on the market are Schneider, ABB, Siemens, Liangxin Circuit Breaker, Fuji, TCL, mitsubishi electric, A-B, LG, Admiralty Muller, festo, ge, Changshu Switch, Shanghai Ergong, He Quan, Delixi, Turk, Shanghai Tianyi, Haig, Zheng Tai, Delta, Tianshui, Fatai, Panasonic and so on. There are hundreds of companies such as Weilun, Qisheng, Tianzheng, Khyron, Baiyun Mountain, Changhui, Huatong Electromechanical, Tianyu, Xiamen Control, Kangmaosheng, Fan Kai Electric, Nengmei, WBSTE, Eaton, Huatong and Shilin.
Among them, the circuit breakers of foreign brands are generally of good quality. For example: Schneider, ABB, Siemens, Mueller, Legrand, etc. But their prices are generally higher.
There are also many domestic brands of circuit breakers. Popular in the market are: Liangxin, Changshu Switch, Delixi, Zheng Tai, Shanghai People's Electrical Appliances, etc. Among them, the quality of Liangxin and Heng switches is relatively better, and the quality of others is similar.
Relatively speaking, the circuit breakers with better quality are Schneider, ABB and Siemens, followed by Liangxin and Changshu switches, followed by Delixi, Zheng Tai and Shanghai People's Electrical Appliances. As far as the cost performance of the circuit breaker is concerned, Liangxin circuit breaker is ok and belongs to the middle end. There are many small brands of circuit breakers in the market, so I won't compare them here because the market is not very hot.
Products produced in Zheng Tai include? Series of molded case circuit breakers such as NM8, NM6, Record-Mc, NM 1, DZ20, NM 10, DZ 15; ? DZ20L, NM 1LE, DZ 15LE series plastic case leakage circuit breakers; People's products have passed CCC certification, European CE certification, American UL certification and British KEMA certification, and won the titles of China famous trademark, China famous brand product and national quality award. The company has established a postdoctoral research center, which has been rated as one of the five key projects in Zhejiang Province, namely, high-tech enterprises in Zhejiang Province, three-star enterprises in Zhejiang Province, China Electric Industry 100, and Zhejiang Province.
The corresponding products produced by Tianzheng Electric Appliance Company all have the national compulsory certification license, namely "CCC" certificate. The company has successively passed ISO900 1 quality system certification, ISO 1400 1 environmental system certification, OHSAS 1800 1 occupational health system certification, and some products have passed EU CE safety certification and US UL certification. Tianzheng Electric has always been committed to building a green organization with core competitiveness, always integrating the concept of sustainable development into enterprise management and practicing social responsibility with practical actions. We hold a strict and responsible attitude towards customers, shareholders, partners, employees and the public, operate in good faith, win by quality, realize the green and benign development of enterprises through technological upgrading and management innovation, and contribute to a harmonious society.
The brand of low-voltage circuit breaker, so much for me to introduce here. If you want to know more, we need to consult more information. For this kind of engineering major, it is difficult to understand. We need professional knowledge, extensive knowledge and comprehensive understanding. Low-voltage circuit breakers should be applied to all aspects of our lives. Anything you want to do applies to your life. Pay more attention, and you may have more professional knowledge.
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