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Modern power distribution systems require intelligent protection devices that not only interrupt fault currents but also restore service automatically whenever possible. The 33KV Distribution Recloser Circuit Breaker is specifically designed to enhance feeder reliability, reduce outage duration, and support the transition toward digital distribution networks. By combining high-performance vacuum interruption technology with intelligent fault analysis and automatic reclosing, the equipment significantly improves power continuity while lowering operation and maintenance costs.
Compared with conventional outdoor circuit breakers, a 33KV Distribution Recloser Circuit Breaker performs continuous monitoring of current, voltage, and fault conditions. The built-in intelligent controller distinguishes between transient and permanent faults, allowing temporary disturbances such as lightning strikes, tree contact, or wildlife interference to be cleared automatically without requiring manual intervention. This capability dramatically improves feeder availability and reduces unnecessary truck rolls for utility maintenance teams.
Designed for utility substations, overhead distribution feeders, renewable energy collection systems, industrial power networks, mining projects, and rural electrification, the breaker features a maintenance-free vacuum interrupter, corrosion-resistant enclosure, programmable protection relay, and comprehensive communication interfaces for SCADA, DMS, and smart grid automation platforms.
| Function | Description |
|---|---|
| Overcurrent Protection | 50 / 51 |
| Earth Fault Protection | 50N / 51N |
| Directional Overcurrent | Optional |
| Automatic Reclosing | 1–4 Programmable Shots |
| Cold Load Pickup | Standard |
| Load Monitoring | Real-Time Current & Voltage Measurement |
| Fault Recording | Waveform & Event Log Storage |
| Remote Operation | SCADA / DMS Compatible |
| Power Quality Monitoring | Optional |
| Remote Firmware Upgrade | Supported |
| Parameter | Specification |
|---|---|
| Rated Voltage | 33kV |
| Maximum System Voltage | 36kV |
| Rated Frequency | 50Hz / 60Hz |
| Rated Continuous Current | 630A / 1250A |
| Rated Short Circuit Breaking Current | 16kA / 20kA / 25kA |
| Rated Making Current | 50kA / 63kA Peak |
| Rated Short-Time Withstand Current | 20kA / 25kA (3 Seconds) |
| Power Frequency Withstand Voltage | 70kV (1 Minute) |
| Lightning Impulse Withstand Voltage | 170kV |
| Mechanical Life | ≥10,000 Operations |
| Electrical Endurance | E2 Class |
| Opening Time | ≤45ms |
| Closing Time | ≤80ms |
| Reclosing Attempts | 1–4 User Programmable |
| Operating Mechanism | Motor-Charged Spring |
| Auxiliary Supply | 24VDC / 48VDC / 110VDC / 220VDC |
| Communication Protocols | IEC61850, IEC60870-5-101/104, DNP3, Modbus RTU/TCP |
| Protection Degree | IP65 |
| Ambient Temperature | -40℃ ~ +60℃ |
| Relative Humidity | ≤100% |
| Installation Altitude | ≤2000m |
| Applicable Standards | IEC 62271-111, IEC 62271-100, IEEE C37.60 |
| Comparison Item | Our Distribution Recloser | Typical Market Product |
|---|---|---|
| Vacuum Interrupter Technology | Latest Generation Sealed Vacuum Bottle | Conventional Vacuum Bottle |
| Protection Functions | Comprehensive Digital Protection | Basic Protection Functions |
| Automatic Fault Recovery | Programmable Multi-Shot Reclosing | Limited Reclosing Options |
| Communication Interfaces | IEC61850, DNP3, Modbus, IEC60870 | Usually RS485 or Modbus Only |
| Condition Monitoring | Built-in Diagnostics & Event Recording | Limited Monitoring |
| SCADA Compatibility | Fully Compatible | Additional Gateway Often Required |
| Maintenance Requirement | Minimal | Higher Inspection Frequency |
| Customization Capability | OEM & Utility-Specific Configuration | Standard Models Only |
| Life Cycle Cost | Lower Total Ownership Cost | Higher Long-Term Cost |
A distribution recloser is an intelligent medium-voltage circuit breaker capable of automatically restoring power after temporary faults while permanently isolating sustained faults, improving distribution network reliability.
Unlike ordinary circuit breakers, a distribution recloser integrates intelligent protection, programmable automatic reclosing, communication, fault recording, remote monitoring, and automation functions in a single device.
Yes. It supports IEC61850, IEC60870-5-101/104, DNP3, and Modbus protocols, allowing seamless integration with SCADA, EMS, DMS, and utility automation platforms.
It is widely installed in utility distribution networks, renewable energy plants, industrial substations, mining operations, railway auxiliary power systems, and rural electrification projects.
Yes. Protection curves, reclosing logic, communication parameters, CT ratios, control voltages, event recording, and automation functions can all be customized according to utility specifications or EPC project requirements.
Yes. We support OEM and ODM manufacturing, including customized logos, controller software, communication protocols, electrical schematics, project documentation, FAT testing, and complete engineering support.
As an experienced China manufacturer of medium-voltage intelligent distribution equipment, we supply complete solutions for utilities, EPC contractors, switchgear manufacturers, and power engineering companies worldwide. Every 33KV Distribution Recloser Circuit Breaker is manufactured under strict quality control and undergoes comprehensive routine testing before shipment. We provide technical consultation, customized engineering, protection coordination, FAT reports, installation guidance, and global after-sales support to ensure reliable operation throughout the product lifecycle.
