Schneider Electric ZB5AT8643M Harmony XB5 Emergency Stop Head Red 40 mm Push-Pull Emergency Stop Push Button

The Schneider Electric ZB5AT8643M is a Harmony XALF/XB5 illuminated emergency-stop head with a red, 40 mm, unmarked mushroom in plastic, built for an integral-LED light block. It latches mechanically with a built-in mechanical state indicator and releases with a push-pull action, mounting in a 22 mm panel cutout ahead of a compatible contact body.

Technical Specifications

Certifications & Standards

• CSA
• DNV
• BV
• LROS
• UL Listed
• GB 14048.5
• UL 508
• ISO 13850
• IEC 60204-1
• CSA C22.2 No 14
• IEC 60947-1
• JIS C8201-5-1
• IEC 60947-5-4
• IEC 60947-5-1
• JIS C8201-1
• IEC 60947-5-5

Selection Notes

The mechanical state indicator shows whether the mushroom is latched or released even with the LED unpowered, which is a real advantage over a purely electrical indicator on a station where control power may be off while the e-stop itself still needs to be checked. The plastic bezel and IP54 rating put it a step below the metal ZB4BW643's IP66/IP69K for washdown duty, so reserve it for general indoor panels where chemical resistance and lighter weight matter more than hose-down sealing.