ZN28G-12 Indoor Vacuum Circuit Breaker

Product Overview

The ZN28G-12 series vacuum circuit breakers are indoor high-voltage switchgear for rated voltage 12kV, three-phase AC 50Hz.

This vacuum circuit breaker features a simple structure and compact size, with a spring-energy storage operating mechanism, capable of AC or DC operation. It can accommodate up to three overcurrent release devices. The vacuum arc extinction chamber and the operating mechanism are arranged in a front-to-back configuration, forming a composite insulated overall structure. The unit is characterized by small dimensions, low noise, ease of installation, and no need for adjustment.

Vacuum arc extinguishing chambers are available in ceramic and glass varieties. They utilize the high insulation properties of vacuum and a specially designed contact structure to perform opening and closing operations. These chambers offer strong breaking capacity, long lifespan, and no risk of explosion.

This vacuum circuit breaker is suitable for control and protection of power transmission and distribution systems in power plants and sub-stations, particularly for frequently operated locations.

This vacuum circuit breaker is fully specified, series-produced, and compact, suitable for standalone use as well as integration into mid-mounted and fixed switchgear cabinets, accommodating various customer requirements.

Technical Specifications