VS1-12/VYF1-12

The VS1 (VYF1-12) series of indoor AC high-voltage vacuum circuit breakers is designed for use in 50Hz networks with a rated voltage of 12kV. Developed and manufactured by integrating ABB’s advanced technology with China’s evolving industry standards and production capabilities, this product features an integrated design that combines the switch unit with the operating mechanism, along with a composite insulation system. It boasts zero pollution, eliminates explosion risks, and offers superior insulation performance. As a result, it is ideally suited for industrial and mining enterprises, power plants, substations, and other facilities, serving as both control and protective equipment—particularly well-suited for industries like metallurgical arc steelmaking, where frequent operational demands are common. The product’s operating mechanism employs a modular spring-operated design, allowing it to function either as a fixed installation unit or as part of a withdrawable handcart assembly. It supports both electric and manual operation modes, providing flexibility for diverse application needs.

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Product Description

Product Overview

The VS1 (VYF1-12) series of indoor AC high-voltage vacuum circuit breakers is designed for use in 50Hz networks with a rated voltage of 12kV. Developed and manufactured by integrating ABB’s advanced technology with China’s evolving industry standards and production capabilities, this product features an integrated design that combines the switch unit with the operating mechanism. It employs a composite insulation system, ensuring zero pollution and eliminating explosion risks, while delivering exceptional insulation performance. Ideal for industrial and mining enterprises, power plants, substations, and other facilities, these circuit breakers serve as reliable control and protection devices—particularly well-suited for industries like metallurgical arc steelmaking, where frequent operational demands are common.
This product series features a modular spring-operated mechanism integrated with the circuit breaker body, allowing it to function both as a fixed installation unit and as part of a withdrawable handcart assembly. It supports both electric and manual operation modes.

Model Description

Main technical specifications

Structural Features

Circuit Breaker Outline Diagram

Internal Wiring Principle