Reliance Electric 86466-58S Rectifier Stack Module

Reliance Electric 86466-58S Rectifier Stack Module (0-51378-25) is a thyristor-based rectifier stack assembly in the 86466 family, originally produced by Reliance Electric and later associated with Baldor Reliance. The 58S designation identifies a specific configuration within this series, which is listed by multiple suppliers as a rectifier stack component and is often described as a heat sink assembly to support thermal management in high-current rectification. The 86466 family includes several variants (such as 58S and 58R), and the 58S configuration is commonly referenced in vintage Baldor/Reliance drive systems. This module is used to convert AC input into DC for industrial drive systems and DC motor applications in legacy Baldor/Reliance equipment, and is frequently sold as a replacement or repair part for existing 86466-based power converters. Availability and exact electrical ratings vary by configuration and vendor; consult the specific datasheet or catalog entry for compatibility with your drive architecture.