Westinghouse 12NC1000 U Rating Plug Assembly Pro

The Westinghouse 12NC1000 SELTRONIC rating plug is a fixed plug‑in accessory for Westinghouse NC‑frame electronic trip molded case circuit breakers that sets the continuous current rating to 1000 A. Used with SELTRONIC electronic trip units, it provides accurate long-time and short-time overcurrent protection for industrial power distribution, switchgear, motor control centers, and other large installations requiring adjustable electronic trip protection. Key specifications include NC frame compatibility, voltage system compatibility up to 600 VAC, UL Listed, and it functions as an internal trip unit accessory for Westinghouse NC/SELTRONIC systems. Common replacements include Eaton 12NC1000 SELTRONIC Rating Plug; Eaton NC Frame 1000A Rating Plug; and Cutler-Hammer SELTRONIC 1000A Rating Plug.