ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker

ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker is a 10kV–12kV pole-mounted vacuum circuit breaker designed for three-phase AC distribution networks. Featuring a dual power supply and double isolation structure, it provides reliable switching, circuit protection, source transfer, and safe isolation functions for overhead distribution systems. Equipped with advanced vacuum interruption technology and an intelligent controller, the breaker supports remote monitoring, fault detection, and distribution automation, making it suitable for utility networks, substations, industrial facilities, and smart grid applications.

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Description

Overview

ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker for Intelligent 10kV–12kV Distribution Systems

The ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker is designed for 10kV–12kV three-phase AC overhead distribution networks, providing reliable switching, circuit protection, isolation, and automatic power transfer capabilities. With a rated current of 630A and frequency of 50Hz, it is suitable for utility grids, substations, industrial power systems, and outdoor distribution applications.

Adopting a double-power supply and double-isolation configuration, the breaker enables secure source transfer and improves operational reliability. Integrated with the QC-T intelligent controller, it supports real-time monitoring, remote operation, fault diagnosis, and distribution automation functions, helping build efficient and smart medium-voltage power networks.

Operating Conditions

1. Ambient Temperature: -10°C to +40°C;

2. Altitude: ≤2000m;

3. Wind Speed: ≤34m/s;

4. Pollution Level: Class III;

5. Installation: Outdoor.

Features

Double-Power and Double-Isolation Configuration

The ZW32-12GG features a dual power supply system combined with double isolation switches, providing flexible source switching and enhanced operational safety. This configuration improves power supply reliability by allowing secure transfer between different power sources while maintaining a clear isolation distance during maintenance operations.

Key advantages include:

Reliable power source transfer
Visible isolation gap for safer maintenance
Improved power supply continuity
Enhanced system redundancy
Reduced risk of unexpected outages

This design is especially suitable for important distribution networks where continuous and reliable power availability is required.

High-Performance Vacuum Interruption System

The breaker is equipped with high-capacity vacuum interrupters supplied by XuGuang, delivering efficient arc extinction and dependable fault current interruption performance. The optimized interrupter design provides stable operation under demanding electrical conditions and helps extend the service life of the switching equipment.

Main features include:

Excellent vacuum arc extinguishing capability
High breaking reliability
Extended electrical endurance
Strong short-circuit interruption capability
Reduced maintenance requirements

Compared with conventional vacuum interrupter designs, the larger interrupter capacity improves interruption performance and ensures reliable operation in medium-voltage distribution systems.

Heavy-Duty Copper Contacts and Isolation Blades

The main conductive components are manufactured with high-quality copper materials to achieve excellent conductivity and mechanical strength. The reinforced contact and isolation blade structure improves current-carrying capability while maintaining stable electrical performance during long-term operation.

High-purity copper contacts
Double isolation blade structure
Isolation blade thickness up to 2.8 mm
Low contact resistance
Excellent oxidation resistance

Compared with commonly used 2.0–2.2 mm copper isolation blades, the thicker copper design provides higher mechanical durability and improved current transmission capability.

Technical Data

Item	Unit	Parameter
Rated Voltage	kV	12
Rated Current	A	630
Rated Frequency	Hz	50
Rated Short Circuit Breaking Current	kA	20
Rated Short-Time Withstand Current		50
Rated Short-Circuit Making Current		50
Installation Type	/	Pole Mounted
Operation Mode		Manual / Motorized
Control Unit		QC-T Smart Controller
Isolation Switch		Double Isolation Design

Typical Applications

The ZW32-12GG Double-Power Double-Isolation Outdoor Vacuum Circuit Breaker is designed for reliable operation in medium-voltage distribution systems where secure switching, isolation, and continuous power supply are required.

Typical applications include:

Utility Distribution Networks

Urban power distribution systems
Rural overhead distribution lines
Distribution automation projects
Substations and distribution substations
Switching stations
Power network protection systems

Industrial Power Systems

Mining operations
Industrial manufacturing plants
Factory power distribution networks
High-reliability electrical systems

Critical Power Applications

Dual-source power distribution systems
Backup power switching applications
Automatic transfer schemes
Essential service power networks

Why Choose ZW32-12GG Vacuum Circuit Breaker?

The ZW32-12GG combines advanced switching technology, intelligent control, and enhanced safety features to meet the requirements of modern medium-voltage distribution networks. Its dual-power and double-isolation design improves system reliability, while the high-performance vacuum interrupter and reinforced conductive components ensure stable operation in demanding environments.