Siemens Emergency stop pushbutton, mushroom, red, 2NC, 22mm Part number 3SU1150-1HA20-3PH0

Product Overview

The Siemens SIRIUS ACT 3SU1150-1HA20-3PH0 is an emergency-stop mushroom-type actuator in a 22 mm round, metal-shiny design with a 40 mm red head and a yellow backing plate bearing the “NOT-HALT” inscription. The unit features positive-latching operation (rotate-to-unlatch) in accordance with EN ISO 13850, and is supplied with holder, two normally-closed contact modules and a spring-type terminal base for efficient connection.

Key Features

• Emergency-stop mushroom actuator, metal shiny finish, 22 mm mounting diameter
• Positive latching head (red, 40 mm) with yellow backing plate and “NOT-HALT” inscription for high visibility
• Rotate-to-unlatch mechanism ensuring safe manual reset after actuation
• Includes two NC contact modules and spring-type terminal base for consolidated installation
• Front-face protection rated to IP66/IP67/IP69/IP69K when mounted correctly, terminations rated to IP20 — suitable for harsh industrial environments with ingress protection requirements

Technical Specifications

• Product Series: Siemens SIRIUS ACT (22 mm metal, shiny)
• Article Number: 3SU1150-1HA20-3PH0
• Number of Command Points: 1
• Operation Principle: Positive latching (emergency stop)
• Actuator Diameter (Head): 40 mm
• Mounting Diameter: 22 mm (plus positive tolerance)
• Electrical Contact Configuration: 2 NC (normally-closed) modules included
• Rated Insulation Voltage (Ui): 500 V AC
• Surge Voltage Withstand (Uimp): 6 kV
• Degree of Pollution: 3
• Protection Class (Front): IP66 / IP67 / IP69 / IP69K
• Protection Class (Terminals): IP20
• Operating Ambient Temperature: -25 °C to +70 °C
• Storage Temperature: -40 °C to +80 °C
• Net Weight (Approx.): 0.136 kg

Compliance & Certifications

• Conforms to EN ISO 13850 for emergency-stop function
• Meets IEC/EN 60947-5-1 standards for control-panel operator devices
• Halogen-free, silicon-free materials in line with industrial safety requirements

Applications

This 3SU1150-1HA20-3PH0 actuator is ideal for incorporation into machine-tool control panels, automation enclosures, process machinery, and industrial systems requiring a robust, resettable emergency-stop control element with high ingress protection. It enables safe operator shutdown of equipment and helps ensure compliance with safety regulations in demanding industrial environments.