Allen-Bradley 1494U-NO Auxiliary Contact Block

Allen-Bradley 1494U-NO auxiliary contact block provides a single normally open contact that mirrors the position of the associated 1494U universal visible-blade disconnect switch. Designed for use with Bulletin 1494U disconnect switches, this add-on accessory adds electrical feedback for control circuits and interlock logic in industrial automation. The 1494U-NO uses a QuadConnect contact arrangement and is rated for 2.5 A, enabling it to carry small control currents in signaling and interlock applications. With one N.O. contact, it serves to signal switch status to PLC inputs or other control relays, helping ensure safe, coordinated operation of equipment. Typical use cases include indicating open/closed status to a controller, enabling interlock sequences, or providing a feedback path in safety circuits, all while occupying minimal space on the disconnect device. When ordering, verify compatibility with your specific 1494U model and follow installation instructions in the Rockwell Automation literature to ensure correct mounting, wiring, and enclosure protection.