Schneider XB4BS8442 Harmony | Emergency Stop Switch
1. Overview
The Schneider XB4BS8442 is a high-quality emergency stop switch from the Harmony XB4 series, designed for industrial safety applications. It features a 40mm red mushroom head, a 22mm metal mounting base, a trigger latching mechanism, and a turn-to-release function for enhanced safety. This switch includes 1 NC (Normally Closed) contact, ensuring reliable emergency shutdown in critical systems.
2. Key Features
- Emergency Stop Function: Ensures quick machine shutdown for safety.
- Trigger Latching Mechanism: Locks in place upon activation to prevent accidental resets.
- Turn-to-Release: Rotational reset for controlled restart.
- 1 NC Contact: Breaks the circuit when pressed.
- Robust Metal Design: Ensures durability and resistance to harsh environments.
- Ø40mm Mushroom Head: Provides easy and intuitive operation.
- Ø22mm Mounting Size: Standard industrial compatibility.
3. Technical Specifications
- Product Series: Harmony XB4
- Type: Emergency Stop Switch
- Head Type: Mushroom, red
- Head Diameter: Ø40mm
- Mounting Diameter: Ø22mm
- Operation: Push to stop, turn to release
- Contact Configuration: 1 NC (Normally Closed)
- Material: Metal body for enhanced durability
- Terminal Type: Screw clamp terminal
- Standards Compliance: IEC 60947-5-1, CE, UL, and EN ISO 13850
4. Benefits
- Enhanced Safety: Provides immediate shutdown in emergency situations.
- Reliable Performance: Maintains a secure latching mechanism until manually reset.
- Easy Installation: Standard Ø22mm mounting size with screw terminals.
- Durable Construction: Metal body ensures long-lasting operation in industrial environments.
- Compliant with Safety Standards: Meets global safety regulations for industrial machinery.
5. Applications
- Industrial Machinery & Equipment
- Manufacturing and Processing Plants
- Control Panels & Automation Systems
- Power Stations & Electrical Panels
- Conveyor Systems & Material Handling Equipment
6. Conclusion
The Schneider XB4BS8442 Harmony Emergency Stop Switch is an essential safety component for industrial control systems. With its trigger latching mechanism, turn-to-release function, and robust metal design, it ensures reliable emergency shutdown and compliance with safety regulations. Ideal for industrial automation, machinery protection, and critical emergency stop applications.












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