VXB-12(i) Indoor Smart High-Voltage Vacuum Circuit Breaker
2.They are designed for receiving, controlling, distributing, and protecting electrical energy in industrial and mining enterprises, power plants, and smart substations.
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Product Introduction
VXB-12(i) Indoor Smart High-Voltage Vacuum Circuit Breaker
Product Overview
The VXB-12(i) series circuit breakers are suitable for three-phase AC 50Hz distribution systems with rated voltages of 12kV and below. They are designed for receiving, controlling, distributing, and protecting electrical energy in industrial and mining enterprises, power plants, and smart substations.
Product Features
▲This product complies with GB/T1984-2014 and DL403-2017 standards.
▲Features a fully modular design with superior transmission: the cam directly drives the main shaft, minimizing transmission links for high efficiency and reliability.
▲Motor modules are easily replaceable.
▲Highly weather-resistant for diverse environmental applications.
▲Equipped with wireless temperature monitoring.
▲Online monitoring capabilities: tracks current in closing/opening coils, energy storage motors, trolley motors, and earthing switch motors; records operation timing and current waveforms during closing/opening; monitors mechanical characteristics; enables intelligent control.
▲ Features a visual human-machine interface.
Complies with IEC 61850 communication protocol.
▲Meets environmental protection requirements throughout design, manufacturing, and end-of-service phases.
Internal components:
Sensors: Covering mechanical properties, temperature, partial discharge, Hall sensors, etc.: Integrated design, modularization, chip-based: High integration, wireless sensing, easy installation.
Smart Integrated Device: The SED.500 O&M Protection Integrated Device covers feeders, distribution transformers, bus tie switches, automatic transfer switches for backup power, PT wells, reactive power compensation, and comprehensive measurement and control devices. All include common-mode monitoring modules and meet State Grid/Southern Grid network access requirements.
Primary Equipment Intelligence: Analyzes real-time sensor data on mechanical properties, electrical conductivity, insulation characteristics, and other operational metrics to provide preliminary equipment health assessments, fault predictions, optimal solutions, and lifespan projections.
Cloud Platform System: Supports web services and smartphone terminals (iOS/Android), featuring backend monitoring systems and expert diagnostic systems.
Expert Diagnostic System: Establishes multidimensional operational state models for equipment by integrating factory data, operational data, and test data. Utilizes big data analytics to diagnose equipment operational status, identify potential defects and faults, and provide operational strategies and lifespan projections.
Backend Monitoring Software: A web-based monitoring system encompassing all functions of the Smart Repair Substation Automation System, with embedded energy efficiency management and analysis modules.
Key Technical Specifications:
|
NO. |
Project |
Unit |
Parameters |
|
|
1 |
Rated voltage |
kv |
12 |
|
|
2 |
Rated frequency |
Hz |
50 |
|
|
3 |
Rated current |
A |
630~4000 |
|
|
4 |
1-minute power frequency withstand voltage |
To ground, between phases |
kV |
42 |
|
Vacuum and Isolation Breaks |
48 |
|||
|
5 |
Lightning impulse withstand voltage |
To ground, between phases |
kV |
75 |
|
Vacuum and Isolation Breaks |
85 |
|||
|
6 |
Rated Short-Time Withstand Voltage(4s) |
kA |
20~40 |
|
|
7 |
Rated Peak Withstand Current |
kA |
50~100 |
|
|
8 |
Rated Short-Circuit Breaking Current |
kA |
20~40 |
|
|
9 |
Rated Short-Circuit Closing Current (Peak) |
kA |
50~100 |
|
|
10 |
Rated operating cycle |
|
0-0.3s-CO-180s-CO |
|
|
11 |
Short-circuit breaking current under phase-to-ground fault conditions |
kA |
17.4-34.8 |
|
|
12 |
Short-Circuit Fault Test Method 5 for Output Terminals: DC Component Percentage |
|
52% |
|
|
13 |
Mechanical life |
Time |
30,000/20,000 (2,000A–31.5kA and above) |
|
|
14 |
Rated Short-Circuit Breaking Current Number of Breaks |
Time |
50/30 (40kA) |
|
|
15 |
Rated Cable Charging and Breaking Current |
A |
25 |
|
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.
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