Sumitomo ONHM05-4090YA-B-11 Electromechanical Relay

Sumitomo ONHM05-4090YA-B-11 is an electromechanical relay from Sumitomo, identified by the exact model number ONHM05-4090YA-B-11, used to switch a secondary circuit under the control of a logic or power signal. This device energizes a coil to actuate internal contacts, opening or closing a load circuit, and is commonly employed in automation panels, motor control circuits, and signal switching applications where galvanic isolation is desired. The ONHM05-4090YA-B-11 designation places it in Sumitomo's ONHM05 family; precise specifications—coil voltage, contact configuration (poles/throws), current rating, insulation, and mounting style—are defined in Sumitomo's official ONHM05 datasheet and in retailer catalogs that list this exact model. For compatibility and safe operation, verify the model against the official datasheet or a trusted distributor before integration into equipment.