Southern States, LLC
Key takeaways
- Category: Automation & Robotics, Maintenance & Shutdowns
- Based in: Hampton, Georgia, Birmingham and 5 more locations
- Serves: France, Italy, United States
- Operating: Founded 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. Founded in 1916 as an electric motor and transformer repair shop by W.E. Mitchell in Birmingham, Alabama, the company relocated to Hampton, Georgia in 1940 after acquiring Henderson Foundry & Machine Works. During World War II, Southern States pivoted operations to support the war effort, manufacturing bomb casings and firing pins for the U.S. Military and earning the prestigious Army-Navy E award for munitions excellence.
The company experienced significant global expansion from the 1950s through 1970s, serving electric utilities worldwide with multiple facility expansions in 1952, 1959, 1964, and 1976. The 1980s and 1990s brought breakthrough innovations including the first substation class expulsion power fuses, the Amplitact rotating blade disconnect switch, and the world’s first 1 million-plus volt RDA 1100 kV double-end break switch. In 2004, Southern States expanded its global footprint through strategic acquisition of European disconnect switch manufacturers Egic in Lyon, France and Coelme in Venice, Italy, gaining access to European IEC Type Switches and a worldwide network of representatives.
The 2010s saw the establishment of a dedicated Transmission Switch Division, launching the patented ES-1 phase-over-phase switch and the Substation in the Sky solution. The 2020s brought formation of divisions for power systems solutions, grid services, and sensors and automation. In 2025, Southern States launched the Distribution Fault Detection Isolation and Restoration solution with Smart Automation Module and Smart Automation Management System, introducing software solutions for utility customers. The company holds over 100 patents and operates as part of Southern States Investment Holdings, focusing on accelerating the build-out of a modern electric grid in North America and around the world.
Southern States provides custom-engineered high-voltage switching solutions built on a century of innovation. Customers from cooperatives and investor-owned utilities to renewables and industrial operators rely on the company to solve critical power challenges. All products are engineered to the highest technical standards and manufactured from the finest raw materials. By partnering with Southern States, utilities gain access to unparalleled engineering expertise that integrates with existing infrastructure, improving resilience and safeguarding critical power networks.
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Company details
- Scale
- Over 100 patents, Over 100 years in business, World's largest manufacturer of high-voltage disconnect switches
- Also worth knowing
- World's largest manufacturer of high-voltage disconnect switches, Over 100 patents, First substation-class expulsion power fuses, World's first and only 1-million-plus volt switch, Only single-gap per phase SF6 full load break/loop break/line drop interrupter attachment for transmission-class vertical break switches, World's first single-gap per phase SF6 special purpose capacitor switch with pre-insertion resistors for transient mitigation, Patented ES-1 phase-over-phase switch, Patented RLSwitcher interrupter design, Army-Navy E award for munitions excellence during World War II, Amplitact rotating blade disconnect switch, Acquisition of Egic (Lyon, France) and Coelme (Venice, Italy)
Details prepared by MineListings. Southern States, LLC can update them by upgrading to Premium.
Where is Southern States, LLC listed in the directory?
Automation & Robotics 189 companies Maintenance & Shutdowns 148 companiesFrequently asked questions
What does Southern States, LLC supply?
Upgrades, Retrofits & Repairs, Site & Field Services, Training, Turnkey Solutions, Spare & Replacement Parts, HVDC & SVC Modernization, Expert supervision or assistance with installation, adjustment, commissioning, inspection and maintenance, Preventive and corrective maintenance support, Training programs tailored to crews for installation, commissioning, inspection and maintenance, Removal of existing equipment and installation of replacements, Supplier-shared maintenance tracking and performance management, Engineering review of structure and switch designs for fit and function, CapSwitcher breaker or circuit switcher change-outs, Asset-monitoring hardware and software integration, Repair and rebuild of thyristor valve power modules, Upgrade from parallel small thyristors to single large-area devices, Refurbishment of heatsinks, clamping systems and gate drives, Repair or replacement of VBO circuitry, snubber networks and grading components, Modernization of valve triggering with indirect light-triggered thyristor technology, Fiber optic link replacement and refurbishment of transmitter/receiver circuitry, Supply of dynamically matched thyristor sets, Pulse transformer assemblies, Consigned stock solutions, Supplier-managed inventory programs, Recommended spare parts stocking levels
Where is Southern States, LLC based?
Hampton, Georgia, Birmingham, Alabama, Lyon, France, Venice, Italy
Which industries does Southern States, LLC work in?
Electric utilities, Renewable energy, Industrial data centers, Grid security, Power transmission, Power distribution
What equipment or products does Southern States, LLC offer?
O2RIGEN Power Switching & Protection, Disconnect Switches, Switch Interrupter Attachments, Grid Automation, Mobile Substations, Capacitor Banks, Substation in the Sky, Renewable Interconnection, Switch Accessories & Attachments, Reclosers, Thyristors & Diodes, STATCOMs & SVCs, Sub-Cycle Switches, Grid Security Products, CapSwitcher, RLSwitcher, Vertical Circuit Switchers (CSV), Reactor Switchers, Horizontal Circuit Switchers, Horizontal Line Switchers, Load-and-Line Switchers, TranSwitcher, Vertical Break Switches, Center Break Switches, Double-End Break Switches, Single-Side Break Switches, Ground Switches (ESD-63, HRR, TV-70, EVG-1, HRU, LH-6), Hookstick Switches (PBO-2, PBO-1, PBO, PBO-R, PBO-R-1, PBO-T, PBO-T-1, XY-2A), Phase-Over-Phase Switches (ES-1), Distribution Fault Detection Isolation and Restoration (DFDIR), Smart Automation Module (SAM), Smart Automation Management System (SAMS), Amplitact rotating blade disconnect switch, RDA 1100 kV double-end break switch, Cole Electric Company switches, Johnson Switch Company switches, Siemens switches, Siemens-Allis switches, Allis Chalmers switches, Schwager Wood Corporation switches
How long has Southern States, LLC been operating?
Founded 1916
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