Product Overview

The intelligent pole-mounted circuit breaker is an advanced, fully integrated medium-voltage protection device designed for installation on overhead distribution poles in outdoor power distribution networks. This device combines high-performance vacuum interruption technology with smart monitoring, protection, control, and communication capabilities, providing comprehensive protection for distribution lines, transformers, and loads.

The product features a compact, weatherproof, lightweight construction suitable for harsh outdoor environments. It integrates voltage and current sensors, zero-sequence current transformers, and a fully intelligent controller with built-in protection, metering, and communication functions. The intelligent pole-mounted circuit breaker is widely used in 10kV, 24kV, and 35kV distribution networks for fault isolation, load switching, and automatic reclosing, significantly improving distribution network reliability and automation levels.

Key Features

1. High-Performance Vacuum Interruption Technology
   The circuit breaker utilizes advanced vacuum interrupters with high breaking capacity, long electrical life, and reliable arc interruption performance. The vacuum interrupter provides maintenance-free operation and superior interruption capability for both short-circuit and load currents. The mechanism features a permanent-magnet or spring-operated design with fast opening and closing speeds.

2. Fully Intelligent Protection and Control
   The integrated intelligent controller provides comprehensive protection functions including overcurrent protection, short-circuit protection, zero-sequence overcurrent protection for earth fault detection, overvoltage protection, undervoltage protection, and automatic reclosing. Protection parameters are field-programmable with multiple setting groups to accommodate different operating conditions and coordination requirements.

3. Smart Monitoring and Measurement
   The circuit breaker is equipped with high-precision voltage and current sensors for real-time monitoring of line parameters including phase currents, line voltages, active power, reactive power, power factor, and accumulated energy. Zero-sequence current detection enables sensitive earth fault identification. The real-time load monitoring function provides valuable data for distribution system management and optimization.

4. Integrated Communication and Remote Control
   Standard communication interfaces support multiple protocols including IEC 61850, Modbus, IEC 60870-5-101, and IEC 60870-5-104 for seamless integration with SCADA and distribution automation systems. Communication options include fiber optic, GPRS, 4G, 5G, and satellite transmission for reliable data exchange. Remote monitoring and control enable real-time status awareness, remote tripping and closing, and fault isolation from dispatch centers.

5. Compact and Lightweight Weatherproof Design
   The pole-mounted construction features a compact footprint and reduced weight for easy installation. The sealed enclosure provides IP65 or IP67 protection rating, ensuring reliable operation in rain, dust, UV radiation, and extreme temperatures. The durable anti-corrosion coating and stainless steel hardware ensure long service life in harsh outdoor conditions.

6. Flexible Mounting and Auxiliary Power Options
   The circuit breaker supports multiple mounting methods including pole-mounted, platform-mounted, and tower-mounted installations. Auxiliary power options include solar panel with battery backup, external AC power, or integrated voltage transformer power supply. The self-contained design simplifies installation and eliminates the need for external auxiliary power sources.

7. Data Logging and Fault Recording
   The built-in data recorder provides continuous logging of load profiles, fault events, and waveform capture. Detailed fault records include fault type, fault current magnitude, duration, and time stamps, facilitating rapid fault localization and root cause analysis.

Technical Specifications

Rated Voltage: 12kV, 24kV, 40.5kV
Rated Frequency: 50Hz or 60Hz
Rated Current: 630A, 1250A (customizable)
Rated Short-Circuit Breaking Current: 20kA, 25kA, 31.5kA, 40kA
Rated Short-Circuit Making Current: 50kA, 63kA, 80kA, 100kA (peak)
Rated Short-Time Withstand Current: 20kA, 25kA, 31.5kA, 40kA per 4 seconds
Rated Peak Withstand Current: 50kA, 63kA, 80kA, 100kA
Rated Operating Sequence: O - 0.3s - CO - 180s - CO
Mechanical Endurance: 10,000 operating cycles
Electrical Endurance: 10,000 operating cycles at rated current
Protection Rating: IP65 or IP67
Insulation Level - Power Frequency Withstand Voltage (1 minute): 42kV (12kV), 65kV (24kV), 95kV (40.5kV)
Insulation Level - Lightning Impulse Withstand Voltage: 75kV (12kV), 125kV (24kV), 185kV (40.5kV)
Operating Temperature Range: -40°C to +55°C
Max Installation Altitude: up to 3000m above sea level (customizable)
Controller Enclosure Protection: IP54
Communication Protocols: IEC 61850, Modbus, IEC 60870-5-101, IEC 60870-5-104
Auxiliary Power Options: Solar panel with battery, external AC, or integrated VT

Applications

The intelligent pole-mounted circuit breaker is widely used in urban and rural 10kV, 24kV, and 35kV overhead distribution networks. It serves as a primary protection device for distribution feeders, branch lines, and transformer protection applications. The circuit breaker is also employed in automatic fault isolation and restoration systems for distribution automation projects. Industrial self-generation systems use this device for generator protection and synchronization. Renewable energy applications including photovoltaic plants and wind farms rely on intelligent pole-mounted circuit breakers for power collection, feeder protection, and grid interconnection. The device is also applicable for ring network distribution systems and looped network configurations requiring remote control and fault isolation capabilities.

Compliance Standards

IEC 62271-100 High-Voltage Switchgear and Controlgear - Part 100: Alternating Current Circuit Breakers, GB 1984 High-Voltage Alternating Current Circuit Breakers, GB/T 11022 Common Specifications for High-Voltage Switchgear and Controlgear Standards, DL/T 402 Technical Specifications for High-Voltage Alternating Current Circuit Breakers, DL/T 721 Technical Specifications for Distribution Automation Terminals, and relevant grid interconnection standards for distribution automation systems.

Why Choose Us

Our intelligent pole-mounted circuit breaker features advanced vacuum interruption technology with high breaking capacity and reliable arc interruption. The integrated intelligent controller provides comprehensive protection with field-programmable parameters and multiple setting groups for flexible coordination. Smart monitoring capabilities including real-time load measurement, fault recording, and waveform capture enable rapid fault localization and root cause analysis. Multiple communication options support seamless integration with SCADA and distribution automation systems. We perform comprehensive quality control including mechanical and electrical verification, protection relay calibration, and communication protocol testing before delivery. Customization options are available for voltage rating, current capacity, communication protocols, and mounting configurations to meet specific project requirements. Our engineering team provides professional technical support for system design, installation, and commissioning. Competitive pricing and efficient manufacturing processes ensure value for money. Comprehensive after-sales service includes installation guidance, commissioning assistance, spare parts supply, and remote technical support. Our intelligent pole-mounted circuit breakers have been installed in numerous distribution automation projects worldwide with proven reliability and customer satisfaction.