Products Description
ZN39-40.5C/T(D) series vacuum circuit breaker is a trolley type with a reasonable structure, easy maintenance, safety, and reliability. It's composed of a vacuum interrupter chamber, operating mechanism, insulator, rotating parts, frame, and so on. It takes the front and rear arrangement for the operating mechanism and the vacuum interrupter chamber, installing upward for the dynamic conductive rod of the vacuum interrupter chamber and connecting with the operating mechanism through the abductor's arm and insulated rod to complete the breaking and closing.
ZN39-40.5C/T(D) series vacuum circuit breaker takes TD8113A ceramic vacuum interrupter produced by us, the contacts use a new type of total magnetic field mechanism as the movable and static contacts break with electricity under the action of the operating mechanism, and the contact gap will burn the vacuum arc and extinguish the arc during the current crosses zero, due to the special structure of the contacts, the contact gap will generate appropriate longitudinal magnetic field during the burning period, this magnetic field can make the arc evenly distributed on the contact surface. Maintain low arc voltage, reduce arc energy and electro-corrosion rate, and make the vacuum interrupter with high post-arc medium recovery speed, small arc energy, and electro-corrosion rate to improve VCB's breaking capacity and electrical life.
ZN39-40.5C/T(D) series vacuum circuit breaker also has a set of interlocking devices, which conveniently uses with the switchgear. The interlocking device locks the vacuum circuit breaker at the closed position to prevent it from tripping due to the wrong pull of the trolley in the closed state. In an emergency, please operate the CS manual mechanism to keep the locking pin contacting latches to make the circuit breaker trips.
ZN39-40.5C/T(D) series vacuum circuit breaker is a trolley type with a reasonable structure, easy maintenance, safety, and reliability. It's composed of a vacuum interrupter chamber, operating mechanism, insulator, rotating parts, frame, and so on. It takes the front and rear arrangement for the operating mechanism and the vacuum interrupter chamber, installing upward for the dynamic conductive rod of the vacuum interrupter chamber and connecting with the operating mechanism through the abductor's arm and insulated rod to complete the breaking and closing.
ZN39-40.5C/T(D) series vacuum circuit breaker takes TD8113A ceramic vacuum interrupter produced by us, the contacts use a new type of total magnetic field mechanism as the movable and static contacts break with electricity under the action of the operating mechanism, and the contact gap will burn the vacuum arc and extinguish the arc during the current crosses zero, due to the special structure of the contacts, the contact gap will generate appropriate longitudinal magnetic field during the burning period, this magnetic field can make the arc evenly distributed on the contact surface. Maintain low arc voltage, reduce arc energy and electro-corrosion rate, and make the vacuum interrupter with high post-arc medium recovery speed, small arc energy, and electro-corrosion rate to improve VCB's breaking capacity and electrical life.
ZN39-40.5C/T(D) series vacuum circuit breaker also has a set of interlocking devices, which conveniently uses with the switchgear. The interlocking device locks the vacuum circuit breaker at the closed position to prevent it from tripping due to the wrong pull of the trolley in the closed state. In an emergency, please operate the CS manual mechanism to keep the locking pin contacting latches to make the circuit breaker trips.
How does ZN39-40.5C/T(D) outdoor vacuum circuit breakers work?
A general explanation of how ZN39-40.5C/T(D) outdoor vacuum circuit breakers work. Vacuum circuit breakers are a type of electrical switch designed to interrupt electric current under both normal and fault conditions. They are commonly used in medium-voltage applications.
Here is a basic working principle of ZN39-40.5C/T(D) vacuum circuit breaker:
Arc Interruption: When a fault occurs or when the breaker is manually opened, contacts inside the circuit breaker separate rapidly, creating an arc between them. The arc produces a high temperature and ionized gases.
Arc Extinction: In a vacuum circuit breaker, the contacts are enclosed within a vacuum interrupter. The vacuum helps to extinguish the arc by providing insulation and preventing re-ignition. Without any medium to sustain the arc, the dielectric strength of the vacuum increases quickly, leading to arc extinction.
Current Interruption:
As the arc is extinguished, the current flow is interrupted, preventing further damage to the electrical system. The vacuum interrupter ensures a high degree of insulation and can withstand the high voltages that occur during the interruption process.
Contact Closing: When it is safe to restore the electrical supply, the vacuum circuit breaker's contacts can be closed again, allowing current to flow through the circuit.
It's worth noting that specific circuit breaker models may have additional features and mechanisms, such as operating mechanisms, control systems, and monitoring capabilities. These features can vary based on the manufacturer and the intended application of the circuit breaker.
To get accurate information about the working principle of the ZW39-40.5 Outdoor Vacuum Circuit Breaker, I recommend referring to the product documentation, technical specifications, or contacting the manufacturer directly.
What is the role of ZN39-40.5C/T(D) outdoor vacuum circuit breaker
The role of ZN39-40.5C/T(D) outdoor high voltage circuit breaker is to provide protection to electrical systems by interrupting or isolating the flow of electrical current in high voltage networks. It is a critical component in power transmission and distribution systems, as it helps to safeguard equipment, personnel, and the overall electrical infrastructure.
Here are the key roles and functions of ZN39-40.5C/T(D) outdoor vacuum circuit breakers
Fault Interruption: The primary role of ZN39-40.5C/T(D) outdoor vacuum circuit breakers is to interrupt the flow of current in the event of a fault or abnormal condition in the electrical system. When a fault occurs, such as a short circuit or an overload, the circuit breaker quickly detects the fault and opens its contacts to interrupt the current. By doing so, it helps protect the system from excessive currents that can cause damage to equipment or result in hazardous conditions.
Load Switching:
ZN39-40.5C/T(D) outdoor vacuum circuit breakers also facilitate the switching and isolation of electrical loads. They allow for the controlled opening and closing of circuits during normal operating conditions, enabling maintenance activities, load shedding, or load transfer operations.
System Protection:
ZN39-40.5C/T(D) outdoor vacuum circuit breakers play a crucial role in protecting the electrical system from various faults and abnormalities. They help prevent damage to transformers, generators, transmission lines, and other equipment by isolating faulty sections of the network. Circuit breakers can detect different types of faults, such as short circuits, overloads, and ground faults, and interrupt the current flow to mitigate the impact of these faults.
Overcurrent Protection:
ZN39-40.5C/T(D) outdoor vacuum circuit breakers are designed to protect against overcurrent conditions. They are equipped with protective relays that monitor the current levels in the system. If the current exceeds the preset threshold due to a fault or abnormality, the protective relay signals the circuit breaker to trip and interrupt the current.
Coordination and Selectivity:
In complex electrical networks, ZN39-40.5C/T(D) outdoor vacuum circuit breakers are installed at various levels to achieve coordination and selectivity. This means that circuit breakers are coordinated to ensure that the nearest breaker to the fault operates first, isolating the faulted section while keeping the rest of the system operational. This coordination helps minimize the impact of faults, localize disruptions, and enhance the reliability of the overall system.
Overall, ZN39-40.5C/T(D) outdoor vacuum circuit breakers play a crucial role in maintaining the integrity and reliability of electrical power systems by providing protection against faults, enabling load switching operations, and safeguarding equipment and personnel.
OEM/ODM Services:
At Shaanxi Yuguang Electric Co., Ltd., we understand the importance of customization. That's why we offer comprehensive OEM and ODM services to meet your specific requirements. Whether you need private labeling or custom product development, our experienced team is here to assist you every step of the way.
Certificates:
We take pride in our commitment to quality and safety. Our products are certified to meet the highest industry standards, including:
3C Certification
ISO 9001 Certification
21 Utility Model Patents and Design Patents

Why Choose Us:
State-of-the-art Manufacturing Equipment
Extensive Testing Facilities
Comprehensive Quality Assurance Processes
ISO 9001 Certified Quality Management System
One-year Warranty on All Products
Large Production Capacity
FAQ:
Q: What is the warranty period for your products? A: We offer a one-year warranty on all our products.
Q: Can you customize products according to our specifications? A: Yes, we provide OEM and ODM services to meet your specific requirements.
Q: Are your products compliant with international standards? A: Yes, our products meet all relevant international standards.
Q: What is the lead time for orders? A: The lead time depends on the quantity and customization requirements. Please contact us for more information.
Q: Do you provide technical support? A: Yes, we offer comprehensive technical support to our customers.
Packaging:
Wooden Box Packaging
Carton Packaging
Foam-filled Packaging
Waterproof and Moisture-proof Packaging
Customized Packaging
International Standard Packaging
Logistics:
Sea Freight
Air Freight
Land Transportation
Multimodal Transport
Express Delivery Services
Contact Us:
Ready to take your electrical projects to the next level? Contact us today at ygvcb@hotmail.com to discuss your requirements and explore partnership opportunities with Shaanxi Yuguang Electric Co., Ltd. Let's create a brighter future together.


