About Us

Protecting the world’s power supply since 1916

Southern States LLC is the world's largest manufacturer of high-voltage disconnect switches and a leading provider of next-generation solutions to enhance power reliability, quality, resilience, and safety.

With over 100 patents, our commitment to innovation is unmatched. Customers — from co-ops and IOUs to renewables and industrials — turn to us to solve their most important power challenges.

We pride ourselves on our unparalleled engineering and manufacturing expertise. A few of our accomplishments include:

The first substation-class expulsion power fuses

The world’s first and only 1-million-plus volt switch

The only single-gap per phase SF6 full load break/loop break/line drop interrupter attachment for transmission-class vertical break switches

The world’s first single-gap per phase SF6 special purpose capacitor switch with pre-insertion resistors for transient mitigation

Substation in the Sky™

We work closely with each customer to provide a high-voltage power switching solution tailored to their specific application requirements. All Southern States products are engineered to the highest technical standards and manufactured from the finest raw materials by craftsmen who share the same commitment to quality and dedication to detail that has been the cornerstone of Southern States since our inception.