Westinghouse PB1A 9084A18G01 Model B Contact Block is an operator-mounted auxiliary contact block designed for use with pushbuttons and control stations in industrial control and operator interface systems. Rated for 600 V, it uses screw-terminal connections and features an industrial auxiliary contact configuration in Model B, supporting operator interface and control switching in pushbutton stations, motor control centers, manufacturing equipment, and industrial automation panels. Common replacements include Westinghouse 800T-XA, Eaton 10250T, and Schneider Electric Harmony ZBE.
