Siemens E-stop mushroom pushbutton, round, plastic, red, 22mm

Product Overview

The Siemens 3SU1100-1HB20-1PG0 is a SIRIUS ACT 3SU1 series emergency-stop (E-Stop) mushroom pushbutton. Designed for panel mounting with a 22 mm cutout, it features a round red actuator (Ø 40 mm) with a yellow backing plate and a latching mechanism — ensuring a reliable and visible emergency-stop control for industrial machines and control panels.

Key Features

• Emergency-stop (E-Stop) mushroom pushbutton, 22 mm round panel cutout
• Red round actuator, 40 mm diameter, for clear high-visibility emergency shutdown
• Positive-latching mechanism — remains latched when pressed until manually released (rotate-to-unlatch)
• Contact configuration: 2 × NC (normally closed) contacts for safety redundancy
• Screw-type terminals for secure wiring connections
• Robust plastic housing and actuator — suitable for industrial environments
• High protection degree: suitable for harsh and dirty environments (dust/water resistances per module rating)
• Compatible with standard 22 mm control-panel cutouts — easy retrofit or new-build control-panel integration

Technical Specifications

• Article Number: 3SU1100-1HB20-1PG0
• Product Series: SIRIUS ACT 3SU1
• Function: Emergency-Stop (E-Stop) mushroom pushbutton — latching, twist-to-reset
• Actuator Type / Shape: Round mushroom, 40 mm diameter
• Mounting Cutout: 22 mm round panel hole
• Contact Configuration: 2 × Normally Closed (NC)
• Rated Insulation Voltage (Ui): 500 V (AC/DC)
• Rated Thermal Current (Ith): 10 A
• Rated Operational Voltage (Ue): 5 … 500 V AC/DC
• Operation Type: Positive-latching with manual twist-to-release reset
• Terminal Type: Screw terminals
• Protection Class (Front): IP66 / IP67 / IP69 (actuator/housing), IP20 (terminals when tightened)
• Mechanical Service Life (typical): ≥ 300,000 operations
• Operating Temperature Range: –25 °C … +70 °C
• Conductor Connection Range: typical for screw-terminal design (solid/fine-stranded conductors per Siemens standard)

Compliance & Certifications

• Designed according to the SIRIUS ACT 3SU1 modular control and signalling devices standard
• Complies with emergency-stop safety requirements (e.g. emergency-stop functionality, positive opening contacts) suitable for industrial safety applications
• Robust construction for industrial environments — resistant to dust, water, and mechanical stress per IP66/67/69 classification

Applications

The 3SU1100-1HB20-1PG0 is ideal for emergency-stop applications on industrial machinery, production lines, automation systems, control panels and any environment where a reliable, visible, and robust emergency shutdown button is required. It is widely used in machine-tool safety, conveyor systems, manufacturing plants, and any automated installations needing compliance with safety and emergency-stop standards.