Schneider Electric XB5AS8445 E-Stop Red Mushroom 40mm Turn-to-Release 1NC+1NO Stop Emergency Stop Push Button

The Schneider Electric XB5AS8445 is a Harmony XB5 emergency stop push button (EMS/EMO) with a 40 mm red mushroom head, trigger-action mechanical latching, turn-to-release reset, and a 1NC+1NO contact block rated 10 A Ith. It mounts in a standard 22.5 mm panel cut-out and is sealed to IP66/IP67/IP69/IP69K. It operates across an ambient temperature of -40°C to 70°C for continuous industrial duty.

Technical Specifications

Certifications & Standards

• CSA
• Lloyd's Register
• BV
• UL Listed
• DNV
• ISO 13850
• IEC 60947-5-5
• IEC 60204-1

Selection Notes

The trigger-action mechanical latch stays engaged once pressed and only releases on a deliberate quarter-turn, meeting ISO 13850's requirement that an emergency stop cannot reset itself or be released by an accidental push. The NC contact carries positive opening per IEC 60947-5-1 Appendix K for the safety circuit, while the added NO contact gives a separate signal, for example to a PLC or beacon, confirming the stop has been triggered without wiring into the safety loop itself. Choose this 1NC+1NO version over the single-contact XB5AS8442 whenever the control system needs that extra status signal alongside the hard-wired safety circuit.