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
In a power system, a circuit breaker plays an increasingly important role for over-heat, over-load,over-voltage and short circuit protection, which has a direct protection for these electrical equipment. Therefore, the following aspects also need to be considered when you choose a proper type circuit breaker.
- Ultimate interrupting capacity for short circuit; 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
In terms of voltage level, it can be divided into HV circuit breakers, MV circuit breakers and LV ciruit breakers.
Based on its arc extinguishing materials, it has oil-immersed type, vacuum type and filling-in SF6 air.
Divided by structure:
There are universal (frame type), plastic shell type, and small micro break;
With regard to the operation mode, it has three main types, automatic operation, energy -storage , and manual operation;
Divided by the number of the poles:
Single-pole, Double-pole, Triple-pole, and Duadruple-pole;
When it comes to installation methods, it has plug-in type, fixed type , and drawable type;
According to the wiring method, there are pre board wiring, post board wiring, etc; (Front panel wiring is a common wiring method)
Regarding to the tripping curve, there are four types of tripping curves: A, B, C, D, etc;
Concerning to the usual varieties, there are molded case, plastic case leakage, small and small leakage, intelligent universal circuit breakers, etc;
As for 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.