Product Overview

Enclosure for command devices, 22 mm, round, enclosure material metal, enclosure top part yellow, 1 control point metal, EMERGENCY STOP mushroom pushbutton red, 40 mm, rotate-to-unlatch, control point in center, 1 NC, screw terminal, floor mounting, 1xM20 each on top and bottom

Article Number: 3SU1851-0NA00-2AA2

Key Features:

• Safety Function: Complete emergency stop assembly with 40mm red mushroom pushbutton in robust metal enclosure
• Enclosure: 22mm round metal construction with high-visibility yellow top part
• Operation: Rotate-to-unlatch mechanism for secure emergency stop activation
• Control Point: Metal control point centrally positioned for optimal access
• Contact Configuration: 1 NC (normally closed) contact for fail-safe operation
• Connection: Screw terminal for secure electrical connections
• Mounting: Floor mounting design with integrated cable entries
• Cable Entry: 1x M20 cable gland on top and 1x M20 on bottom
• Industrial Grade: Metal construction provides superior durability and protection

Technical Specifications:

• Enclosure Size: 22 mm diameter, round
• Enclosure Material: Metal construction
• Mushroom Button Size: 40 mm diameter, red
• Operation Type: Rotate-to-unlatch
• Contact Configuration: 1 NC (normally closed)
• Terminal Type: Screw terminal
• Cable Entry: M20 threaded entries (top and bottom)
• Enclosure Color: Yellow top part
• Button Color: Red (emergency stop standard)
• Control Point Material: Metal
• Control Point Location: Center positioned
• Net Weight: 0.595 kg
• Packaging Dimensions: 95.00 x 101.00 x 134.00 mm
• Quantity Unit: 1 Piece
• EAN: 4011209969285
• UPC: 804766075346
• Country of Origin: Germany

Product Benefits:

• Metal Enclosure: Superior durability and protection compared to plastic versions, ideal for harsh industrial environments
• Safety Critical Design: Emergency stop functionality provides immediate equipment shutdown capability
• High Visibility: Red mushroom button on yellow metal enclosure ensures maximum visibility in emergency situations
• Fail-Safe Operation: Normally closed contact ensures circuit interruption when activated
• Rotate-to-Unlatch: Prevents accidental reset and ensures intentional operator action to restore operation
• Floor Mounting: Optimized for ground-level emergency stop applications and pedestrian access
• Dual Cable Entry: M20 entries on top and bottom enable flexible wiring and signal distribution
• Center Control Point: Optimally positioned for emergency access and activation
• Robust Construction: Metal materials provide enhanced mechanical protection and EMI shielding
• German Engineering: Precision manufacturing guarantees consistent safety performance and reliability
• Heavy-Duty Design: Higher weight (0.595 kg) indicates substantial construction for demanding applications

Applications: Essential safety device for floor-mounted emergency stop applications in harsh industrial environments, heavy machinery, manufacturing equipment, process systems, and automation installations where superior durability and protection are required. Perfect for outdoor applications, chemical processing areas, high-vibration environments, and installations exposed to mechanical stress where metal construction provides enhanced reliability over plastic alternatives.

Safety Features:

• Emergency Stop Function: Immediate circuit interruption for equipment shutdown
• Visual Identification: Red button color universally recognized for emergency stop
• Metal Construction: Enhanced protection against physical damage and environmental factors
• Secure Reset: Rotate-to-unlatch mechanism requires deliberate action to restore operation
• Center Positioning: Optimal placement for emergency access and visibility

Electrical Specifications:

• Contact Type: 1 NC (normally closed for fail-safe operation)
• Operation: Push-to-stop, rotate-to-unlatch
• Terminal Configuration: Screw type for secure emergency circuit connections

Installation Features:

• Floor Mounting: Designed for base-level safety installations
• M20 Cable Entries: Standard metric threading for secure cable management
• Dual Entry Points: Top and bottom cable access for emergency circuit routing
• Metal Control Point: Enhanced durability and professional appearance

Environmental Benefits:

• Metal Construction: Superior resistance to chemicals, UV exposure, and temperature extremes
• EMI Shielding: Metal enclosure provides electromagnetic interference protection
• Vibration Resistance: Robust construction withstands high-vibration industrial environments

Compliance & Certifications:

• RoHS Compliant: Since 01.10.2014
• WEEE Directive: Take-back obligation applies
• Export Control: AL: N / ECCN: N
• Product Class: A - Standard stock item

REACH Regulation Notice: This product contains substances from the candidate list in concentrations higher than 0.1% w/w:

• Lead

Based on current information, these substances do not pose risk when used as intended. Please refer to product documentation for complete details.

Download existing graphical data for this product:

• System Manual - SIRIUS ACT 3SU1 Pushbuttons and Signaling Devices
• Technical Documentation
• Product Datasheet
• Additional Product Information