Schneider XB4BS8442 Emergency Stop Button, Harmony XB4, Metal, Red Mushroom

The Schneider Electric XB4BS8442 is a red mushroom-head emergency stop pushbutton from the Harmony XB4 series, designed for 22.5 mm panel cutouts. It features a 40 mm red mushroom actuator with a turn-to-release latching mechanism and 1 NC slow-break contact for reliable machine safety applications.

Technical specifications:

• Commercial reference: XB4BS8442
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony XB4
• Product type: Emergency stop pushbutton
• Actuator: Red mushroom head, 40 mm, unmarked
• Mounting diameter: 22.5 mm
• Body material: Chrome-plated metal
• Reset: Turn-to-release
• Contact type: 1 NC (slow break)
• Contact material: Silver alloy (Ag/Ni)
• Rated operational current [Ie]: 3 A at 240 V AC-15; 6 A at 120 V AC-15
• Rated insulation voltage [Ui]: 600 V (pollution degree 3)
• Rated impulse withstand voltage [Uimp]: 6 kV
• Thermal current in air [Ith]: 10 A
• Short-circuit protection: 10 A gG fuse
• Mechanical durability: 300,000 cycles
• Electrical durability: 1,000,000 cycles
• Operating travel: 1.5 mm (NC changes state); 4.3 mm (total)
• Width: 40 mm
• Height: 47 mm
• Depth: 82 mm
• Weight: 0.118 kg
• IP protection: IP66 / IP67 / IP69 / IP69K
• NEMA rating: NEMA 4X, NEMA 13
• Impact resistance: IK06
• Operating temperature: -40...70 °C
• Storage temperature: -40...70 °C
• Connection: Screw terminals, 1 x 0.22 mm² to 2 x 1.5 mm²
• Contact circuit: ISO no. 1 (21-22) NC
• Certifications: CSA, UL, Lloyd's Register, Bureau Veritas, DNV
• Standards: IEC 60947-5-1, IEC 60947-5-5, ISO 13850, IEC 60204-1, UL 508, CSA C22.2 No 14

Features and benefits:

• Turn-to-release latching action ensures the emergency stop remains engaged until deliberately reset
• Positive opening operation per IEC 60947-5-1 Annex K ensures contact separation even under contact welding conditions
• High IP66/IP67/IP69K rating with resistance to 7,000,000 Pa pressure washing at 55 °C
• Chrome-plated metal body provides robust durability for industrial environments
• Vibration resistance to 5 gn (2-500 Hz) and shock resistance to 50 gn per IEC 60068-2-27

Applications:

• Emergency stop function on industrial machinery and automated production lines
• Machine control panels requiring ISO 13850 compliant safety stopping
• Harsh environments exposed to washdowns, moisture, or dust ingress
• Marine and offshore control panels requiring Lloyd's, BV, or DNV certification

Compliant with IEC 60947-5-1, IEC 60947-5-5, ISO 13850, IEC 60204-1, UL 508, and CSA C22.2 No 14. Part of the Schneider Electric Harmony XB4 range.

Also known as: Schneider XB4BS8442, Schneider Electric XB4BS8442, Harmony XB4 emergency stop button, 22mm mushroom head e-stop.