Westinghouse Electric Corporation 4LCL400 U Rating Plug

Westinghouse 4LCL400 Rating Plug is a 400 A industrial-duty plug designed to calibrate breaker trips and coordinate protection in industrial distribution systems. It is intended for LCL-series molded case circuit breakers and other switchgear assemblies, providing an adjustable trip configuration for accurate overload protection and retrofit projects. This breaker-installed plug supports maintenance activities, trip-unit replacement, and electrical retrofits across molded case breaker systems, motor control centers, and facility power distribution in manufacturing plants, utilities, and processing facilities. Key specifications include Manufacturer Part Number 4LCL400, Brand Westinghouse, Product Type Rating Plug, Amperage Rating 400A, and its application as a circuit breaker trip calibration and protection coordination accessory compatible with industrial switchgear and MCC setups. Related replacements include Westinghouse 4LC400Q Rating Plug.