Siemens SIRIUS ACT 3SU1050-1HB20-0AA0 Emergency Stop Mushroom Pushbutton, Metal Front Ring, Red, Turn-to-Release

The Siemens SIRIUS ACT 3SU1050-1HB20-0AA0 is a professional-grade emergency stop mushroom pushbutton engineered for critical safety applications in industrial control panels. This actuator features a robust metal front ring and a high-visibility red mushroom head, ensuring it stands out in emergency situations. Designed for durability and reliability, it provides a secure interface for machine operators to immediately halt operations when necessary.

Advantages

The primary benefit of this emergency stop button is its rugged construction, which ensures long-term performance even in harsh industrial environments. The metal front ring provides superior mechanical stability compared to plastic alternatives, while the ergonomic mushroom design allows for quick and intuitive activation. The turn-to-release mechanism adds an extra layer of safety, preventing accidental restarts and ensuring that the system remains in a safe state until manually reset by authorized personnel.

Suitable for

• Industrial machinery control panels
• Emergency shutdown systems in manufacturing plants
• Safety-critical automation equipment
• Conveyor belt control interfaces

This device may not be suitable for environments requiring specific hygienic standards, such as food processing or pharmaceutical cleanrooms, where specialized stainless steel or wash-down rated components are mandatory. Additionally, it is not intended for use in explosive atmospheres unless housed within an appropriately certified enclosure.

Key specifications

• Actuator type: Mushroom pushbutton
• Color: Red
• Front ring material: Metal
• Reset method: Turn-to-release
• Mounting diameter: 22 mm
• Protection class: IP66, IP67, IP69K

To install the Siemens SIRIUS ACT emergency stop, mount the actuator into a standard 22 mm hole on your control panel or enclosure. Ensure the locking mechanism is properly secured to the mounting bracket. Once installed, the button can be pressed to trigger an emergency stop signal. To reset the system, rotate the mushroom head in the direction indicated by the arrows until it clicks back into the operational position.

What to consider before purchase

• Verify the mounting hole diameter of your control panel
• Ensure compatibility with your existing contact blocks
• Check the environmental protection requirements of your facility
• Confirm the necessity of a turn-to-release reset mechanism for your safety protocol

Regularly inspect the actuator for any signs of mechanical wear or debris accumulation to ensure the emergency stop function remains fully operational at all times.