Reliance Electric 0-51375 051375 405971-21A Relay Circuit Board Card

Reliance Electric 0-51375 (051375) is a PC Board Relay Circuit Card used in legacy Reliance Electric control equipment. It is listed under multiple identifiers in the same family, including 0-51375 and 051375, with some references associating 405971-21A as part of the same assembly lineage. Catalog entries describe it as a PC Board Relay Circuit and note an 115V configuration in the description, indicating it provides relay-switching capabilities on a printed-circuit module rather than a standalone component. Typical applications include industrial control panels and drive assemblies where a compact, board-mounted relay circuit supports the controller interface. Because this is an older Reliance component, buyers should verify the exact coil voltage and the connector layout against their equipment’s service documentation or parts catalogs to confirm compatibility with the specific drive or controller model. The product title also references 405971-21A, which appears to identify a related variant within the same Reliance relay-board family.