Your Reliable Circuit Breaker Supplier in China
- Equipped with world’s most advanced automatic production line.
- Annual production capacity over 50,000 units.
- Over 50 years engineering servic experience
- Total solution available for your power distribution system
Circuit Breaker
Our circuit breakers are equipped with the world‘s most advanced automatic production line, featuring an annual capacity of 60,000 units. Products are used in a variety of industries, including nuclear power plants, power plants, substations, urban and rural power grids, petrochemical, metallurgy, railways, and ports. Through continuous innovation and design, we offer clients a top–notch performance. With more than 50 years of engineering service experience, our circuit breakers have seen successful operation in tens of thousands of substations in home and abroad, receiving high praise from customers for their reliable quality and safety.
Meanwhile, we have capabilities to provide a total solution for your power distribution system, including oil immersed or cast resin transformers, copper busway and electrical switchgear.
Low Voltage Circuit Breaker
Used for AC 50HZ, rated voltage AC230/400V, with overload & short circuit protection, control isolation etc.
Rated current up to 125A, Referring to IEC 60947-2, breaking capacity 10KA
For AC 50Hz/60Hz, rated working voltage 230V (1P) 400V (2P-4P), rated working current 6A-63A
Used for AC 50Hz/60Hz, rated working voltage 400/690V , rated working current up to 800A
Rated voltage 220V/380V, current range 6-100A; Used for power distribution protection & motor protection.
Suitable for AC 50Hz, rated voltage 400/690V, rated current 400A-3200A , used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit, and grounding faults
The rated current from 630A to 8000A, voltages range from 400V/415V, 690V, 1140V. AC 50Hz/60Hz. widely used in power stations, factories, mines, and modern high-rise buildings.
Suitable for AC 50Hz, voltage 400/690V, rated current 630A-3900A , used to distribute electrical energy and protect lines and power equipment from overload, undervoltage, short circuit, and grounding faults
Medium Voltage Circuit Breaker
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Fully complied with IEC 6271-100, DIN/VDE 0670; Rated voltage up to 40.5 kV
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Permanent-magnet Vacuum Circuit BreakerRated voltage 12 kV, Rated current over 4 kA, Breaking capacity up to 100 kA
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Outdoor Enclosed Vacuum Circuit BreakerRated voltage 12 kV, Rated current over 630 A, Breaking capacity up to 65 kA
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Outdoor Posted Vacuum Circuit BreakerRated voltage 12 kV, Rated current over 1250 A, Breaking capacity up to 65 kA
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Outdoor Isolation-assembled Vacuum Circuit BreakerRated voltage up to 40.5 kV, Rated current over 1250 A, Breaking capacity up to 80 kA
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Outdoor Fuse-assembled Vacuum Circuit BreakerRated voltage up to 40.5 kV, Rated current over 630 A, Breaking capacity up to 65 kA
Product Feature Box
R & D for Circuit Breakers
Investment in research and development has enabled us to introduce more new circuit breakers to meet the varied requirements of customers across numerous industries. These breakers have been widely praised for their excellent stability and safety.
Automatic Production Line
10 Automatic Production Line make us have annual production of over 60,000 units for different types of LV & MV circuit breaker used for a wide range of industries.
Custom Design for Your Circuit Breaker
Tailored circuit breaker, and a custom total solution for your electrical distribution system, assuring a seamless connection through our innovative copper busway.
Working Principle of Circuit Breakers
An electrical system requires circuit breakers to provide isolation and safety protection functions in addition to circuit control and short circuit and overload protection, especially in terms of personal and equipment safety and reliability of the distribution system. Therefore, the following aspects also need to be considered when you choose a proper type circuit breaker.
- Rated ultimate short-circuit breaking capacity (Icu); 2. Current limiting breaking capacity; 3. Short circuit protection; 4. Overload delay protection; 5. Isolation function; 6. Leakage protection; Arcing short circuits with high fire hazards are difficult to effectively cut off by short circuit protection, while leakage current can reliably disconnect ground faults, preventing the occurrence of personal electric shock and phase to ground short circuit faults.
Related Product
What is a circuit breaker
It is capable of closing, carrying, and breaking the current in a normal circuit, and capable of carrying and breaking within a specified time frame; it is a switching device for current under abnormal circuit conditions (including short-circuit conditions).
What types of circuit breaker
According to voltage level: there are high-voltage circuit breakers and low-voltage circuit breakers;
According to the arc extinguishing medium, there are oil immersed, vacuum, SF6, and air type; (Low voltage circuit breakers are generally air type)
Divided by structure:
There are universal (frame type), plastic shell type, and small micro break;
According to the operation mode, there are electric operation, energy storage operation, and manual operation;
Divided by stages:
There are single pole, two pole, three pole, and four pole;
According to installation methods, there are plug-in, fixed, and drawer types;
According to the wiring method, there are pre board wiring, post board wiring, etc; (Front panel wiring is a common wiring method)
According to the tripping curve, there are four types of tripping curves: A, B, C, D, etc;
According to the usual varieties, there are molded case, plastic case leakage, small and small leakage, intelligent universal circuit breakers, etc;
According to the form of release: there are thermal magnetic release, electronic release, etc;
We have capacities to offer you a wide variety of circuit breaker for your different applications, please consult it with our expert engineers.