Allen-Bradley Phase Control Thyristor 122.93.02 1600 VAC

The Rockwell Automation (Allen-Bradley) part number 122.93.02 is a high-power phase control thyristor in disc (press-pack) package format, rated 800 Amps and 1600 VAC. The component body is marked NS40SH16, L00, E4L, consistent with a large-diameter ceramic-encased disc thyristor of the type used in high-current industrial power conversion and motor drive systems. The item was manufactured in England and is labeled Type: Thyristor on the original Rockwell Automation packaging. The part was discontinued by the manufacturer effective January 2015 and is no longer available through authorized distribution channels, making surplus examples the primary source for maintenance and repair applications.

Disc thyristors of this class are commonly found in large AC and DC drive platforms, soft starters, and industrial rectifier assemblies where phase control of high-current loads is required. The press-pack construction provides low thermal resistance and is intended for use with externally mounted heatsink assemblies or water-cooled clamp arrangements. This unit retains its original protective foam packaging and appears to have been stored rather than installed. The part number 122.93.02 is cross-referenced in Radwell and industrial surplus databases as a Rockwell Automation thyristor control component. Buyers requiring a direct replacement for Allen-Bradley drive systems utilizing this MPN should verify compatibility with their specific drive model and firmware revision requirements prior to installation.

Stock # 0526-02202