Westinghouse S1105474-D Autovalve Lightning Arrester

The Westinghouse S1105474-D Autovalve Lightning Arrester provides dependable surge and overvoltage protection for high-voltage power distribution systems operating up to 6000 V. This vintage porcelain-insulated arrester assembly is designed for indoor or outdoor use in switchgear, substations, transformers, and other industrial or utility equipment to suppress lightning strikes and transient surges. It uses an Autovalve lightning arrester design (Type LV) and is mounted on switchgear or power system equipment to guard against transient events. Sold as New Old Stock (NOS), it is suitable for maintenance, vintage equipment restoration, retrofit projects, and high-voltage protection system servicing. Common replacements include Eaton Cooper Power Series Lightning Arrester, Siemens Station Class Surge Arrester, and GE Distribution Lightning Arrester.