11 kV Pole Mounted Vacuum Circuit Breaker

The Usune ZW32-12 11 kV Pole Mounted Vacuum Circuit Breaker is an outdoor pole-mounted vacuum circuit breaker specifically designed for 10kV–12kV power distribution systems. It employs a high-reliability vacuum interrupter for arc extinguishing, accurately and safely switching on and off various currents. Its robust mechanical structure supports frequent operation and is suitable for scenarios requiring repeated switching.

- Rated Voltage: 12kV (compatible with 10kV/11kV systems)
- Frequency: 50/60Hz
- Number of Phases: Three-phase AC
- Insulation: Outdoor-grade anti-aging and corrosion-resistant materials
- Operation Method: Manual/Electric, compatible with intelligent controllers

Core Features and Advantages

1. Superior Breaking Performance

- Fast vacuum arc extinguishing speed, short breaking time, and high operational stability;
- Excellent short-circuit breaking capacity, effectively protecting lines and equipment;
- Long mechanical and electrical life, suitable for frequent operation scenarios.

2. Intelligent "Four Remote" Functions

When paired with a Usune intelligent controller, it can form an automatic recloser, realizing:
- Remote Control: Remote opening and closing operation by the dispatch center;
- Telemetry: Real-time monitoring of current, voltage, power, and energy data;
- Remote Signaling: Actively reporting equipment status, alarm, and fault information;
- Remote Adjustment: Online setting and modification of protection parameters.

3. Durable Outdoor Design

- Fully enclosed IP54+ protection rating, dustproof, rainproof, and condensation-proof;
- Stable operation in environments ranging from -40℃ to +70℃, resistant to salt spray, moisture, and pollution;
- Compact structure, pole-mountable, easy to install and requires minimal maintenance.

Real-world Application Case

1. Project

Rural Power Grid Automation Upgrade Project in Anhui Province, China

2. Background

Frequent transient faults (lightning strikes, tree contact) in rural power grids, slow fault isolation speed, and a high risk of large-scale power outages.

3. Solution

Deploy 120 Usune ZW32-12 reclosers with intelligent controllers as pole-mounted reclosers for 10kV overhead lines.

4. Application Results:

- Fault Isolation: Automatic tripping within 50ms for short-circuit faults, power restoration within 1 minute for non-faulty areas;
- Transient Fault Elimination: Automatic reclosing eliminates 85% of temporary power outages;
- Remote Management: "Four Remote" functions reduce on-site inspection workload by 60% and improve dispatch efficiency by 70%;

- Reliability: After more than two years of operation, the mean time between failures (MTBF) is >85,000 hours with no major faults, improving power supply reliability for over 30,000 rural users.

Main Technical Parameters

Outer Dimensions

Project Reference

Cas-space Rocket Launch Project

Test Report

FAQ

Q1: Why is the ZW32-12 11 kV Pole Mounted Vacuum Circuit Breaker suitable for frequent operation scenarios?

A: Its vacuum interrupter has low contact wear and long electrical life; its precision spring operating mechanism has high mechanical stability (mechanical operation count ≥10,000 times); its materials and structure are fatigue-resistant, maintaining stable performance during repeated operations, making it suitable for frequent switching scenarios such as capacitor banks and industrial lines.

Q2: How are the "Four Remote" functions implemented?

A: Connect the ZW32-12 to the Usune FTU controller via RS-485 or wireless (4G/LoRa). The controller collects device data, communicates with the master station, and executes remote commands, thereby achieving remote control, real-time telemetry, status remote signaling, and online remote adjustment functions.

Q3: What maintenance is required for outdoor use?

A: This product is virtually maintenance-free. Regular checks are recommended:
- Every 1-2 years: Check seals, fasteners, and insulation performance;
- Every 2-3 years: Check the integrity of the vacuum interrupter and measure contact resistance;
- Every 5 years: Perform a comprehensive calibration of mechanical and electrical performance. Usune provides lifetime technical support and training services.

Conclusion

The Usune ZW32-12 11 KV Pole Mounted Vacuum Circuit Breaker combines excellent performance, intelligent operation, and durability. As a leading manufacturer in China, Usune ensures reliable product quality, adapting to urban and rural power grids, industrial parks, and new energy systems, making it the preferred equipment in the modern power distribution field. With its mature field application experience and comprehensive technical support, Usune has become a trusted supplier and manufacturer in the global power infrastructure sector.