Hyosung’s Vacuum Circuit Breaker (VCB) adopts the latest vacuum switching technology to support up to 120,000 switching operations. By offering various models ranging from 7.2kV to 36kV, we are able to offer specifications optimal for plants and facilities across the world. VCBs are classified as: Fixed, E-class draw-out type, F2-class draw-out type, and G-class draw-out type.


Easy Maintenance (No Oiling or Adjustment Needed)

The VCB is a maintenance-free product, ensuring electronic switching 10,000 times without oiling or adjustment under normal operation condition

Switching times: minimum 10,000, maximum 30,000;

Mechanical switching times: up to 120,000

Users generally uses VCB approximately 3,000 times (until a panel's lifecycle ends)

By measuring the corrosion and abrasion of a contact point, VI replacement timing is displayed to allow for fast action for repair or maintenance

Optimum design mechanism

All driving parts adopts abrasion-resistive bearings

Optimum tolerance maintains uniform operation characteristics

Permanent lubrication (corrosion prevention) in bearing and latch parts

Maintains stable operation characteristics, even with frequent switching or after extended periods of non-use

Adoption of VI using the latest vacuum switching technology

Uses VI, the optimized vacuum-switching technology, which surpasses legacy technology in every respect

Ensures the electric switching lifecycle of a product through a strict quality assurance system and test technology

Superior quality

High quality realized by automated manufacturing processes

Operation characteristics are computer-controlled for every product

Comparison of test data and accumulated date ensures optimum management

No faults or rust in mechanical and bolt areas are found even after 20-30 years of use