Schneider Electric XB4BS9442

This Schneider Electric Harmony XB4 series emergency stop / shutdown push button incorporates a 40mm red mushroom head and utilizes a latched key release (key no. 455) actuation method. The unit features a robust metal bezel construction designed for integration into standard 22mm diameter panel cutouts. Electrical connections are facilitated through simple screw-clamp terminals. The prominent 40mm mushroom shape, combined with the distinctive red color, ensures high visual recognition from a distance. Designed to withstand demanding conditions, this emergency stop / shutdown button—often designated as EMS (Emergency Machine Stop) or EMO (Emergency Off)—offers resistance against impact, dust, water and vibration, achieving an IP66 ingress protection rating. This makes it well-suited for deployment in challenging industrial environments.