Schneider Electric ZB4BS54 Push Button Illuminated

ZB4BS54 is a red emergency stop pushbutton from Schneider Electric’s Harmony XB4/ZB4 metal push-button family, featuring a Ø40 mm red head and a Ø22 mm pushbutton stem with a latching turn-release mechanism that requires a deliberate action to release the stop condition. Designed for safety-critical applications in control panels, it acts as an emergency switching-off device that latches in the stop position until it is unlocked by turning, helping prevent unintended resets in industrial environments where equipment must be quickly and reliably de-energized. Schneider Electric lists ZB4BS54 as discontinued as of January 29, 2021, and designates Harmony XB4/ZB4 metal push buttons in the 22 mm family as the recommended replacement. For buyers seeking a current solution, the XB4/ZB4 metal push-button line provides equivalent 22 mm devices within Schneider Electric’s safety product portfolio, offering a direct upgrade path within the same 22 mm modular family.