Schneider Electric 730986-A Machine Tool Relay

Schneider Electric’s 730986-A Machine Tool Relay is a legacy control device, also catalogued as Square D 8508 BHO-22, Series A, Form 4449 S1. This machine-tool relay is designed to switch control circuits within industrial machinery, serving as a dedicated interface between logic-level signals and machine actuators or interlocks in challenging industrial environments. The Form 4449 S1 designation and the Series A lineage identify its form factor and compatibility within Square D’s replacement-part ecosystem, aiding technicians in sourcing compatible sockets, bases, and accessories. The 8508 BHO-22 label situates the part within the longstanding Square D/NEMA-style relay family, helping engineers match it with other components in legacy control architectures. Used where a dedicated machine-tool relay is required to reliably handle machine-control sequences, this part supports reliable isolation and switching of control circuitry while integrating with older equipment that relies on Square D’s standardized relay formats. When replacement or cross-reference is needed, technicians typically reference the 730986-A in conjunction with the 8508 BHO-22 family to confirm form-factor compatibility and continued operability within legacy Schneider Electric/Square D control systems.