Allen-Bradley 800T-PST16B Miniature Pilot Light

Allen-Bradley 800T-PST16B is a 120V AC miniature pilot light with a blue cap, part of Rockwell Automation’s 800T indicator-light family. The device uses an incandescent lamp and supports transformer-type or dual-input power, with a push-to-test button that lets technicians confirm the lamp is functioning without removing the panel cover. It operates on 120V AC at 50/60 Hz and is designed to provide a clear status indication in control cabinets and machine panels where 120V circuits are used. The blue cap yields high-contrast visibility, aiding quick recognition in multi-light panels and color-coded signaling schemes. This model is typically employed to indicate machine status, such as power on, run, or ready conditions, within industrial automation environments that rely on standard 120V lighting indicators. Its compact form factor accommodates panel installations where space is at a premium and where a reliable, easy-to-replace visual alert is required in a 120V control system. Push-to-test verification is especially useful during commissioning or routine maintenance.