Professional-grade safety limit switch with direct opening mechanism for critical industrial applications
Product Overview
The Omron D4B-4171N is a premium safety limit switch designed for industrial automation applications requiring high reliability and safety compliance. This safety limit switch features a direct opening mechanism that ensures contacts open when faults occur, providing enhanced protection in critical control systems.
Watch the Omron D4B-4171N in action - demonstrating installation and operation
Key Features and Technical Specifications
Direct Opening Safety Mechanism
The D4B-4171N incorporates a direct opening mechanism specifically for NC (Normally Closed) contacts. This critical safety feature ensures that contacts open automatically when faults occur, such as fused contacts, providing enhanced protection in safety-critical applications.
Contact Configuration
This safety limit switch features 1NC + 1NO (snap-action) contacts, providing both normally closed and normally open configurations for flexible integration into various control systems.
Roller Plunger Design
Equipped with a top roller plunger actuator, the D4B-4171N offers smooth operation and reduced wear, making it ideal for applications requiring frequent actuation cycles.
Complete Technical Specifications
Parameter
Specification
Details
Product Type
Safety Limit Switch
D4B-N Series
Contact Configuration
1NC + 1NO
Snap-action contacts
Actuator Type
Top Roller Plunger
M20 thread size
Safety Feature
Direct Opening Mechanism
For NC contacts only
Wiring
Terminal Wiring
1 x terminal wiring
Illumination
Non-Illuminated
Standard version
Sensor Dimensions
40mm Ć 43mm Ć 103mm
Width Ć Length Ć Height
Sensor Diameter
12.7mm
Standard measurement
Factory Pack Quantity
1 unit
Individual packaging
Applications in Industrial Automation
The Omron D4B-4171N is specifically designed for safety-critical applications in industrial automation, including:
Machine Guarding Systems: Integration into safety interlock systems for machine protection
Robotic Work Cells: Position detection and safety monitoring in automated robotic systems
Material Handling Equipment: Limit detection on conveyors, lifts, and transfer systems
Press Brake Safety: Critical safety applications in metal forming machinery
Packaging Machinery: Position verification and safety monitoring in automated packaging lines
Automotive Assembly: Safety systems in automotive manufacturing processes
What is the direct opening mechanism in the D4B-4171N?
The direct opening mechanism is a safety feature that ensures NC contacts open automatically when faults occur (such as fused contacts). This provides enhanced safety in critical applications by preventing the switch from failing in a closed position.
What applications require the D4B-4171N safety limit switch?
This switch is designed for safety-critical applications including machine guarding, robotic safety systems, press brake protection, and any application where personnel safety or equipment protection is paramount.
What is the difference between the D4B-4171N and standard limit switches?
The D4B-4171N includes specific safety features like the direct opening mechanism and is designed to meet higher safety standards. Standard limit switches typically lack these specialized safety mechanisms.
The D4B-4171N features terminal wiring with 1NC + 1NO contacts. Refer to the wiring diagram provided in the product documentation for proper installation.
Is the D4B-4171N suitable for harsh industrial environments?
Yes, this switch is designed for industrial environments and features robust construction suitable for demanding applications with vibration, temperature variations, and mechanical stress.
External References and Trust Metrics
Industry Recognition
Omron is a globally recognized leader in industrial automation with over 80 years of experience
Safety Standards
Complies with international safety standards including IEC and UL requirements
Quality Assurance
Manufactured under ISO 9001 quality management systems
Verified Product Sources
Mouser Electronics: Official distributor listing confirms product specifications and availability
RS Components: Verified technical data and application information
Tameson: Detailed product specifications and dimensional data
Southern Controls: Complete product description and technical support information
The Omron D4B-4171N safety limit switch is available for immediate purchase with comprehensive technical support. This industrial-grade component represents the pinnacle of safety switch technology, combining Omron's engineering excellence with practical industrial application requirements.
Key Benefits of Purchasing from Authorized Sources:
Guaranteed product authenticity and quality
Access to technical documentation and support
Warranty coverage and after-sales service
Compliance with industry safety standards
Reliable supply chain and inventory management
Conclusion
The Omron D4B-4171N safety limit switch represents a critical component in modern industrial automation safety systems. With its direct opening mechanism, robust construction, and flexible contact configuration, it provides reliable protection in safety-critical applications. Whether you're designing new safety systems or upgrading existing equipment, the D4B-4171N offers the performance and reliability expected from Omron's industry-leading automation products.
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