Overview
The Allen-Bradley 440S-MF5D is a GuardLink enabled tap designed for use in safety-critical industrial automation applications. This M12 5-pin EMSS (Electromechanical Safety Switch) connection tap serves as a quick-disconnect interface for safety input devices within a GuardLink system. GuardLink is a safety-based communications protocol that connects safety devices to Rockwell Automation’s Connected Enterprise architecture, enabling real-time visibility and diagnostics at the individual guard or e-stop level.
Key Features
- GuardLink Smart Technology: GuardLink taps connect safety input devices to a GuardLink system, a safety-based communications protocol that links safety to The Connected Enterprise.
- Advanced Diagnostics: Real time, contextual diagnostics and sensor health data significantly improve troubleshooting and enable predictive maintenance planning.
- M12 5-Pin Female Connector: Micro-style M12 receptacle for EMSS (Electromechanical Safety Switch) contact devices.
- Quick-Disconnect Design: Part of the Guardmaster quick-disconnect safety connection system for simplified installation and maintenance.
- Industrial-Grade Construction: Red RAL 3020 unfilled ABS MG47C plastic case material for durability in harsh environments.
- Standards Compliance: Certified to CCC, CE, CUL, KC, RCM, and UL standards for global deployment.
Technical Specifications
The 440S-MF5D tap is designed for integration with GuardLink safety relay systems and EMSS input devices:
- Connector Type: M12 Female, 5-Pin Micro
- Safety Contact Type: EMSS (Electromechanical Safety Switch)
- Connection Mode: Quick-disconnect safety tap
- Dimensions: 79.64 x 38.5 x 17 mm (3.14 x 1.51 x 0.67 in.)
- Shipping weight: approx. 27.2 g (0.96 oz)
- Operating Temperature: -25…+70 °C (-13…+158 °F)
- Storage Temperature: -40…+85 °C (-40…+185 °F)
- Relative Humidity: 35…85%, not exceed 50%RH at 70 °C (158 °F)
- Certifications: CCC, CE, CUL, KC, RCM, UL
- Mounting: Screw-mount configuration
Typical Applications
The 440S-MF5D tap is used in machine safety and plant safety architectures where:
- Guard door interlocks and emergency stops require real-time diagnostic visibility.
- Electromechanical safety switches are integrated into GuardLink safety relay systems.
- Predictive maintenance and condition monitoring of safety devices are critical.
- EtherNet/IP integration with plant control networks is needed for centralized safety status reporting.
- Machine builders and integrators require quick-disconnect safety connections for modular design.
Compatibility & Replacements
Compatible With
- Guardmaster 440R-DG2R2T Dual GuardLink Safety Relay
- 440R-ENETR EtherNet/IP Network Interface for GuardLink systems
- All GuardLink-enabled EMSS safety input devices with M12 5-pin connectors
- Rockwell Automation CompactLogix, ControlLogix, and GuardLogix controllers via EtherNet/IP
- Studio 5000 Logix Designer for safety configuration and diagnostics
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 440S-MF5D is a specific tap configuration for 5-pin EMSS devices. For 8-pin or other contact configurations, refer to related models 440S-MF8D or 440S-SF8D.
Works With
- GuardLink System Architecture: Safety relay-based control with distributed device monitoring.
- EtherNet/IP Integration: Seamless plant network integration via 440R-ENETR gateway.
- Studio 5000 Logix Designer: Configuration, monitoring, and diagnostics through Rockwell Automation engineering software.
- Rockwell Automation Connected Enterprise: Plant-wide visibility and predictive maintenance analytics.
- IEC 61508 & IEC 62061 Safety Frameworks: Suitable for SIL 2/PLd safety integrity levels (verify per application).








