ZW20-12 12kV Outdoor High Voltage Intelligent Vacuum Circuit Breaker

General Introduction

The ZW20-12 Outdoor High Voltage Intelligent Vacuum Circuit Breaker is a pole-mounted medium voltage switching device designed for 10kV/12kV power distribution systems. It combines vacuum interruption technology with intelligent controller functions to provide reliable protection, automatic fault isolation, remote monitoring, and smart grid automation.

This outdoor vacuum circuit breaker is widely used in urban and rural distribution networks, substations, industrial plants, renewable energy projects, and utility overhead transmission lines.

Working Condition

Altitude≤2000 meters

The environment temperature: -30℃~+55℃ outdoor; the highest annual average temperature 20 ℃, the highest daily average temperature 30 ℃;

Relative humidity: 95% (25℃)

Seismic capacity: horizontal ground acceleration 0.3g, vertical ground

acceleration 0.15g, at the same time duration of three sine waves, a safety factor of 1.67 Earthquake intensity: 7 degrees

The maximum daily temperature difference: 25 ℃

The intensity of sunshine (wind speed 0.5m/s): 0.1W/cm²

The maximum wind speed: 34m/s

The maximum ice thickness: 10mm

Installation position: outdoor, the 10kV overhead line responsibility demarcation point

Grounding: neutral non grounding, arc suppression coil grounding and low resistance grounding.

Main Features of ZW20-12 Intelligent Vacuum Circuit Breaker

Vacuum arc extinguishing technology
Excellent short-circuit breaking capability
Intelligent protection and automatic reclosing
Remote control and SCADA communication support
Maintenance-free sealed structure
Suitable for harsh outdoor environments
Compact pole-mounted design
Long mechanical and electrical service life
Optional FTU/RTU communication module
Optional PT and CT integrated configuration

Applications

The ZW20-12 12kV Outdoor Vacuum Circuit Breaker is suitable for:

Power distribution networks
Smart grid automation systems
Pole-mounted switching stations
Industrial power distribution
Utility overhead lines
Rural electrification projects
Solar power plants
Wind power substations
Automatic sectionalizing systems

Technical Specification

Intelligent Controller Functions

The intelligent controller can realize:

Automatic fault detection
Over-current protection
Short-circuit protection
Earth fault protection
Remote opening and closing
Distribution automation
Real-time monitoring
Communication via RS485 / GSM / GPRS / 4G

Optional communication protocols:

IEC 60870-5-101/104
Modbus
DNP3

Why Choose Our ZW20-12 Outdoor Vacuum Circuit Breaker

Professional medium voltage equipment manufacturer
Strict quality control system
IEC standard production
OEM & ODM support
Fast delivery time
Competitive factory price
Export experience in South America, Middle East, Southeast Asia, and Africa
Technical support for distributors and EPC projects

Packaging & Delivery

Standard export wooden case
Safe transportation protection
Sea freight and air freight available
OEM logo and customized nameplate supported

Frequently Asked Questions

What is the difference between ZW20 and ZW32 vacuum circuit breaker?

ZW20 is generally more economical and widely used for standard outdoor distribution protection, while ZW32 often has higher breaking capacity and more advanced automation functions.

Can the ZW20-12 be used for smart grid projects?

Yes. The intelligent controller supports remote communication, automatic reclosing, and SCADA integration, making it ideal for smart grid applications.

Is OEM customization available?

Yes. Customized voltage, current rating, controller configuration, communication protocol, and branding are available.

Outline Drawing