Schneider ZB5AS844 Harmony XB5 (plastic, 22mm) Emergency Stop Head 40mm trigg...

The Schneider Electric ZB5AS844 is a red mushroom-head emergency stop push-button head from the Harmony XB5 range, designed for 22mm panel cutouts. It features trigger action with mechanical hold and twist-release reset, providing a reliable and tamper-resistant emergency stop function for industrial control panels. The 40mm red mushroom actuator offers high visibility and easy operation in safety-critical environments.

Technical specifications:

• Commercial reference: ZB5AS844
• Manufacturer: Schneider Electric
• EAN:
• Series / range: Harmony XB5
• Product type: Emergency stop push-button head
• Mounting diameter: 22mm
• Head shape: Round
• Head profile: Red mushroom, 40mm, unmarked
• Action type: Trigger action with mechanical hold
• Reset method: Twist release
• Body material: Dark grey plastic
• Dimensions (W x H x D): 40 x 40 x 57mm
• Weight: 0.046 kg
• Mechanical durability: 300,000 operating cycles
• Operating temperature: -40...70°C
• Storage temperature: -40...70°C
• IP protection: IP66, IP67, IP69, IP69K per IEC 60529
• NEMA rating: NEMA 4X, NEMA 13
• Impact protection: IK03 per IEC 50102
• Overvoltage category: Class II per IEC 60536
• Certifications: UL, CSA, DNV, BV, LROS (Lloyd's Register of Shipping)

Features and benefits:

• Trigger action with mechanical hold keeps the device latched after activation until deliberately released
• Twist-release reset prevents accidental restart and ensures controlled machine recovery
• IP66/IP67/IP69K-rated for washdown and harsh industrial environments, including high-pressure cleaning at 7,000,000 Pa at 55°C
• Wide operating temperature range of -40...70°C suitable for demanding indoor and outdoor applications
• Compatible with Harmony XB5 contact blocks and XALD/XALK enclosures

Applications:

• Emergency stop stations on industrial machinery and production lines
• Control panels requiring ISO 13850 and IEC 60204-1 compliant emergency stop devices
• Food and beverage or pharmaceutical equipment subject to high-pressure washdown
• Marine and offshore control systems requiring DNV or Lloyd's Register certification

Compliant with ISO 13850, IEC 60947-5-5, IEC 60947-5-1, IEC 60204-1, UL 508, and CSA C22.2 No 14. Part of the Schneider Electric Harmony XB5 range.

Also known as: Schneider ZB5AS844, Schneider Electric ZB5AS844, Harmony XB5 emergency stop head, 40mm mushroom push-button head 22mm.