Siemens Emergency stop, mushroom pushbutton, red, 1NC, 22m Part number 3SU1100-1HB20-3CH0

Product Overview

The Siemens SIRIUS ACT emergency stop mushroom-type actuator (SKU 3SU1100-1HB20-3CH0) is a 22 mm round red push-button with a 40 mm mushroom head, positive-latching mechanism, and a yellow backing plate bearing the “NOT-HALT” inscription. It is designed for use as an emergency stop (E-STOP) device in industrial control panels.

Key Features

• Emergency stop function with positive-latching actuator for reliable safety shutdown
• 22 mm round mounting diameter; actuator head diameter approx. 40 mm
• Red actuator with yellow backing plate marked “NOT-HALT” for high visibility
• Rotate-to-unlatch mechanism enabling manual reset after activation
• One normally-closed (NC) contact module included; spring-type terminals for secure connection
• Robust design: Protection class up to IP66/IP67/IP69 (front), shock and vibration rated for industrial/environment conditions

Technical Specifications

• Product Series: Siemens SIRIUS ACT Emergency Stop Push-Buttons
• Article Number: 3SU1100-1HB20-3CH0
• Actuator Diameter: 40 mm
• Mounting Diameter: 22.3 mm
• Operating Voltage: 5 … 500 V AC/DC
• Insulation Voltage: 500 V
• Rated Surge Voltage: 6 kV
• Mechanical Service Life: Approx. 300,000 cycles
• Electrical Endurance: Approx. 300,000 cycles
• Ambient Operating Temperature: –25 °C to +70 °C
• Storage Temperature: –40 °C to +80 °C
• Dimensions (Approx.): Height 46.4 mm × Width 75 mm × Depth 48.6 mm
• Net Weight: ~0.082 kg

Compliance & Certifications

• Designed to meet EN ISO 13850 for emergency stop functionality
• Meets industrial standards for shock, vibration, and environmental protection (e.g., IEC 60068 series, EN 61373)
• Front face protection IP66 / IP67 / IP69K when properly mounted

Applications

Ideal for safety-critical control panels, machine guards, industrial switchgear and automation systems where emergency stop capability is required. The 3SU1100-1HB20-3CH0 provides high-visibility, reliable manual shutdown for operator safety, maintenance access control and emergency-stop compliance.