An unmatched reputation for excellence – our name says it all When you need high-quality, high-reliability voltage or power control and conditioning products, don’t make concessions. Superior Electric is your choice. Our products and engineered solutions are among the finest in the world. Superior Electric POWERSTAT® Variable Transformers are used across six continents in millions of installations, while our STABILINE® voltage regulators, surge protective devices, UPS and power conditioners continue to be the industry standard for users. Legal Entity: Superior Electric Holding Group LLC