ZW32-12GG 12kV 630A Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker

Product Overview

The ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker is a pole-mounted switching device designed for 10kV–12kV three-phase AC distribution networks. Rated at 630A and 50Hz, it provides reliable switching, protection, isolation, and automatic power transfer functions for overhead distribution lines, substations, industrial facilities, and utility power systems.

Featuring a double-power supply and double-isolation structure, the breaker ensures secure source switching and enhanced operational safety. Equipped with a QC-T Smart Controller, it supports intelligent monitoring, remote control, fault detection, and distribution automation, making it an ideal solution for modern power distribution networks.

Key Features

Double-Power & Double-Isolation Design

The ZW32-12GG adopts a dual-source power supply configuration combined with dual isolation switches, providing enhanced operational flexibility and safety.

Benefits include:

• Reliable power source transfer

• Visible isolation gap for maintenance safety

• Improved supply continuity

• Enhanced system redundancy

• Reduced outage risk

This design is particularly suitable for critical power distribution applications where an uninterrupted power supply is essential.

High-Performance Vacuum Interrupter

The breaker utilizes large-capacity vacuum interrupters manufactured by XuGuang, one of China's leading vacuum interrupter suppliers.

Advantages:

• Superior arc extinguishing capability

• Higher breaking reliability

• Longer electrical life

• Excellent short-circuit performance

• Reduced maintenance requirements

Compared with conventional vacuum interrupters, the larger interrupter design offers stronger interruption performance under demanding operating conditions.

Heavy-Duty Copper Contacts & Isolation Blades

Critical conductive components are manufactured from high-quality thick copper materials.

Features include:

• Pure copper contacts

• Double isolation blades

• Isolation blade thickness up to 2.8 mm

• Excellent conductivity

• Low contact resistance

• Strong oxidation resistance

Compared with standard 2.0–2.2 mm copper blades commonly found on the market, the thicker copper structure provides improved mechanical strength and current-carrying capability.

Stainless Steel Structure for Outdoor Environments

The entire breaker base and supporting structure are constructed from premium stainless steel.

Benefits:

• Corrosion resistance

• Waterproof performance

• Rust resistance

• Long outdoor service life

• Excellent mechanical durability

Designed for long-term operation in harsh outdoor environments, including coastal, industrial, and high-humidity areas.

QC-T Smart Control Terminal

The breaker is equipped with a QC-T Intelligent Controller designed for distribution automation and remote operation.

Smart functions include:

• Remote opening and closing

• Real-time status monitoring

• Fault indication

• Event recording

• Distribution automation integration

• Communication network support

• Alarm and diagnostic functions

The intelligent terminal provides reliable signal transmission and wide communication coverage, making it suitable for industrial and utility power systems.

Comprehensive Protection Functions

The ZW32-12GG integrates multiple protection functions to improve system safety and reliability.

Protection functions include:

• Overvoltage protection

• Undervoltage protection

• Short-circuit protection

• Fault isolation

• Switching protection

These features help minimize equipment damage and reduce outage duration.

Technical Specifications

Environmental Conditions

Typical Applications

The ZW32-12GG Double-Power Double-Isolation Vacuum Circuit Breaker is widely used in:

Utility Distribution Networks

• Urban power distribution

• Rural overhead lines

• Distribution automation projects

Substations

• Distribution substations

• Switching stations

• Power network protection systems

Industrial Facilities

• Mining operations

• Industrial plants

• Manufacturing facilities

• High-reliability power systems

Critical Power Applications

• Dual-source distribution systems

• Backup power switching

• Automatic transfer schemes

• Essential service power networks

Why Choose ZW32-12GG Vacuum Circuit Breakers?

• Double-power supply switching capability

• Double-isolation safety design

• Premium XuGuang vacuum interrupter

• Heavy-duty copper contacts and isolation blades

• Stainless steel outdoor construction

• QC-T smart controller integration

• Remote monitoring and automation support

• Reliable operation in harsh environments

• Ideal for distribution automation projects

Custom Service

We provide customized solutions, including:

• Communication protocol integration

• Protection setting customization

• Current transformer configurations

• Pole-mounting accessories

• Smart grid automation integration

• OEM branding

Contact us for technical drawings, quotations, and customized distribution automation solutions.