Siemens Emergency stop mushroom-type actuator, red, 22mm Part number 3SU1100-1HB20-1FH0

Product Overview

The Siemens 3SU1100-1HB20-1FH0 is a complete emergency-stop mushroom pushbutton unit from the SIRIUS ACT 3SU11 family, fitted with a 22 mm round mounting cut-out and a red 40 mm actuator. It provides a positive-latching EMERGENCY STOP function with a twist-to-unlatch mechanism and includes the requisite holder and contact module — making it ready for panel mounting in safety, control or machine-shutdown applications.

Key Features

• Emergency-stop mushroom pushbutton unit (SIRIUS ACT 3SU11 series)
• 22 mm standard cut-out, round actuator; red 40 mm mushroom head for high visibility
• Positive latching with twist-to-unlatch release — ensures reliable emergency shutdown and safe reset
• Includes contact module and holder — complete ready-to-mount assembly
• Rated insulation up to 500 V AC/DC, pollution degree 3 — suitable for industrial control panels
• Contact configuration typically 1 NO + 1 NC (or as specified) — supports safety circuit requirements
• Compact and durable — fits standard panel designs and control enclosures

Technical Specifications

• Article Number: 3SU1100-1HB20-1FH0
• Product Type: Emergency-stop pushbutton complete unit (SIRIUS ACT 3SU11 family)
• Mounting Cut-out Diameter: 22 mm
• Actuator Head Diameter: 40 mm, red mushroom-style
• Operation: Positive-latching; twist-to-unlatch reset
• Contact Module: 1 contact module included (with NO/NC contacts depending on variant)
• Insulation Voltage: 500 V AC/DC
• Pollution Degree / Surge Voltage Rating: Pollution degree 3; suitable for industrial environments
• Intended Use: Emergency-stop and safety-circuit applications, control panels, machinery shutdown

Compliance & Standards

• Complies with functionality and safety requirements for emergency-stop buttons per EN ISO 13850 standard (via SIRIUS ACT design rules)
• Insulation and contact ratings meet industrial control panel standards for low-voltage control circuits and safety wiring
• Suitable for mounting in industrial enclosures, control cabinets, machinery panels

Applications

This emergency-stop pushbutton unit is ideal for safety shutdown circuits, machine control panels, production-line emergency stops, and safety door / guarded-area interlocks. Its ready-to-mount design, red mushroom actuator and reliable latching make it suitable for industrial automation, manufacturing equipment, conveyors, packaging machines, or any application requiring a visible, durable, and standards-compliant EMERGENCY STOP control interface.