Siemens Emergency stop mushroom p/button, 22 mm, red, 40mm Part number 3SU1000-1HA20-0AA0

Product Overview

The Siemens 3SU1000-1HA20-0AA0 is a SIRIUS ACT emergency stop mushroom pushbutton designed for reliable and immediate machine shutdown in industrial and automation environments. It features a large red round actuator with a 40 mm diameter for quick and unmistakable operation. The device is designed for a standard 22 mm panel cutout and incorporates a positive latching mechanism with pull-to-release reset, ensuring safe and intentional restart after emergency activation.

Key Features

• SIRIUS ACT emergency stop mushroom pushbutton
• Positive latching emergency stop function
• Pull-to-release reset mechanism
• Large 40 mm red mushroom actuator for high visibility
• Standard 22 mm panel cutout mounting
• Two stable operating positions (pressed and released)
• Robust plastic construction for industrial use
• High ingress protection suitable for harsh environments
• Clear tactile feedback for operator safety

Technical Specifications

• Article Number: 3SU1000-1HA20-0AA0
• Product Family: SIRIUS ACT Pushbuttons and Signalling Devices
• Device Type: Emergency stop mushroom pushbutton
• Actuator Shape: Round mushroom head
• Actuator Diameter: 40 mm
• Panel Cutout Diameter: 22 mm
• Function: Emergency stop with positive latching
• Reset Type: Pull-to-release
• Number of Positions: 2 (latched and released)
• Actuator Colour: Red
• Material: Plastic actuator and housing
• Degree of Protection: IP66, IP67, IP69K
• Operating Temperature Range: −25 °C to +70 °C
• Storage Temperature Range: −40 °C to +80 °C
• Mechanical Endurance: Approx. 300,000 operating cycles
• Mounting Type: Panel mounting
• Net Weight: Approx. 48 g

Compliance & Standards

• Designed for emergency stop functions in accordance with industrial safety requirements
• Positive opening action to ensure reliable interruption of control circuits
• Suitable for safety-related control applications on machinery
• Designed to integrate with safety contact blocks and control circuits

Applications

The Siemens 3SU1000-1HA20-0AA0 emergency stop pushbutton is used on machine control panels, operator stations, safety consoles, and automation equipment to provide immediate shutdown in hazardous situations. It is commonly applied in manufacturing lines, processing plants, material handling systems, and industrial machinery where a clearly identifiable and reliable emergency stop device is required.