Schneider XB4BS8445 Emergency Stop Button, Harmony XB4, Metal, Red Mushroom

The Schneider Electric XB4BS8445 is a 22.5 mm emergency stop push button from the Harmony XB4 series, with a red 40 mm mushroom head, twist-release latching, and a 1 NO + 1 NC slow-break contact block. Rated IP66 to IP69K, it meets ISO 13850 and IEC 60947-5-5 requirements for emergency stop devices in industrial control panels.

Technical specifications:

• Commercial reference: XB4BS8445
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony XB4
• Mounting diameter: 22.5 mm
• Button head: Red mushroom, 40 mm diameter, unlabeled
• Reset method: Twist release
• Contact type: 1 NO + 1 NC, slow break, positive opening per IEC 60947-5-1 Annex K
• Contact material: Silver alloy (Ag/Ni)
• Rated insulation voltage (Ui): 600 V (pollution degree 3) per IEC 60947-1
• Rated impulse withstand voltage (Uimp): 6 kV per IEC 60947-1
• Rated operational current (Ie): 3 A at 240 V AC-15 / 6 A at 120 V AC-15
• Operating force: 44 N
• Mechanical endurance: 300,000 cycles
• Electrical endurance: 1,000,000 cycles per IEC 60947-5-1 Annex C
• Connection: Screw terminals, 0.22-1.5 mm² per IEC 60947-1
• Body material: Chrome-plated metal
• Dimensions (H x W x D): 47 x 40 x 82 mm
• Weight: 0.13 kg
• IP rating: IP66, IP67, IP69, IP69K per IEC 60529
• Operating temperature: -40 to 70°C
• Certifications: CSA, UL, BV, DNV, LROS

Features and benefits:

• Positive opening contacts per IEC 60947-5-1 Annex K ensure mandatory circuit interruption in safety applications
• Twist-release reset prevents unintentional machine restart after emergency stop activation
• IP69K rating withstands high-pressure wash-down at 7,000,000 Pa and 55°C
• Wide operating temperature range of -40 to 70°C suits extreme industrial environments
• Chrome-plated metal body with zinc alloy mounting frame delivers lasting mechanical durability

Applications:

• Emergency stop stations on industrial machinery and automated production lines
• Machine control panels requiring ISO 13850 compliant emergency stop devices
• Food and beverage processing equipment subject to regular high-pressure cleaning
• Outdoor control enclosures and operator panels in harsh or wet environments

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 XB4BS8445, Schneider Electric XB4BS8445, Harmony XB4 emergency stop button, 22mm mushroom head emergency stop.