Westinghouse PB1DNRF1Q1 Emergency Push Button

The Westinghouse PB1DNRF1Q1 Emergency Push Button is a key-operated, mushroom-head emergency stop switch designed for panel-mount installation in industrial control and safety systems. It provides a maintained emergency stop with a keyed reset and is commonly installed in control panels, motor control centers, manufacturing equipment, and industrial automation machinery for replacement, retrofit projects, preventive maintenance, and safety upgrades. Part Number PB1DNR with Alternate PB1DNRF1Q1; it uses PB1 Series contact blocks, has screw-terminal connections, operates at 50/60 Hz, and is rated for industrial-duty use, suitable for motor starters and industrial control stations in emergency stop and safety control applications. Common replacements include Allen-Bradley 800T-FXQH24RA1 and Eaton 10250T.