Your Professional Circuit Breakers Supplier
Spanning 60,000+ sqms in Yangzhou, NCE's smart manufacturing hub delivers solid-insulated RMUs, permanent magnet vacuum breakers, and modular smart grid systems for global energy networks.Established in 2001, Yangzhou New Concept Electric (NCE) has become a leader in China’s intelligent power distribution sector.Specializing in solid-insulated RMUs, permanent magnet vacuum circuit breakers, and smart grid automation systems, NCE combines sustainability with cutting-edge technology.
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Why Choose Us
Reliable Power Continuity
Our compact RMUs with closed-loop design ensure power rerouting in milliseconds when a feeder fault occurs, significantly reducing downtime in urban and industrial grids.
Fast and Secure Fault Isolation
Featuring rapid-acting breakers, arc-flash suppression, and fuse isolation, our systems quickly detect and disconnect short circuits and overloads, enhancing operator and equipment safety.
Production Market
Exports permanent magnet vacuum circuit breakers and solid-insulated switchgear to Russia, Philippines, India, and Turkey. Trusted for reliability in harsh environments across Asia-Pacific and the Middle East.
Compact Footprint & Cost‑Effective Installation
Our medium-voltage RMUs occupy minimal space—ideal for substations, rooftops, or underground vaults—and offer lower installation and lifecycle costs compared to conventional switchgear.
Advantages of Circuit Breakers
Protection:
They protect the electrical system from damage by interrupting the current flow in abnormal conditions.
Reusability:
Unlike fuses, most circuit breakers can be reset after they trip, making them reusable.
Safety:
They help reduce the risk of electrical fires and electric shocks.
Troubleshooting:
They can also be used as a manual disconnect for troubleshooting and equipment maintenance.
Technical Specifications
|
Parameter |
Value |
|
Rated Voltage |
40.5kV |
|
Rated Current |
1250A / 1600A |
|
Breaking Capacity |
25kA / 31.5kA |
|
Short-circuit Ops |
≥30 Operations |
|
Operating Mechanism |
Permanent Magnetic Actuator |
|
Communication Interface |
IEC61850 / GOOSE / Modbus / RS485 / 4G |
|
Protection Class |
IP65 or above |
|
Ontrol Unit |
Integrated IED |
Thermal Circuit Breakers
Thermal circuit breakers operate based on the principle of thermal expansion. They are designed to trip when the current flowing through the circuit exceeds the rated value, causing the heat generated to make the bimetallic strip in the breaker bend and trip the breaker.
Magnetic Circuit Breakers
Magnetic circuit breakers operate based on the principle of magnetism. They are designed to trip when the current flowing through the circuit exceeds the rated value, causing the magnetic field generated to trip the breaker.
Hybrid Circuit Breakers
Hybrid circuit breakers combine the features of both thermal and magnetic circuit breakers. They are designed to trip when the current flowing through the circuit exceeds the rated value, using either thermal expansion or magnetism. They are commonly used in residential and commercial applications, where the loads are not too high.
Ground Fault Circuit Interrupters (GFCIs)
Ground fault circuit interrupters are designed to protect against electric shock. They monitor the current flowing through the circuit and trip the breaker if a fault is detected. GFCIs are commonly used in bathrooms, kitchens, and other areas where water is present.
Components Of Circuit Breakers
Frame:
This consists of the components (listed below) and also provides insulation to contain the arc.
01
Operating Mechanism:
This component opens and closes the contacts in the circuit breaker.
02
Interrupting Structure:
This specific part includes all the current-carrying parts except the trip unit and arcing probe.
03
Trip Unit:
This senses abnormal or faulty current flow and causes the operating mechanism to open the contacts. The circuit trip units are usually a thermal-magnetic type.
04
Terminal Connections:
The terminal connections provides a suitable connection from the breaker to the conductor.
05
Applications of Circuit Breakers
Residential Electrical Systems:
Circuit breakers are commonly used in residential electrical systems to protect against overloads and short circuits.
Commercial Electrical Systems:
Circuit breakers are used in commercial electrical systems to protect against overloads and short circuits.
Industrial Electrical Systems:
Circuit breakers are used in industrial electrical systems to protect against overloads and short circuits.
Transportation Systems:
Circuit breakers are used in transportation systems such as trains, airplanes, and automobiles to protect against electrical faults.
FAQ
We're well-known as one of the leading circuit breakers manufacturers and suppliers in China. Welcome to buy bulk circuit breakers for sale here and get pricelist from our factory. Customized orders are welcomed.
12kV Capacitor Powered Breaker, 12kV Integrated Breaker Deep Fusion, 12kV Outdoor Vacuum Breaker AB 3S
