Overview
The Allen-Bradley 440S-SF5D is a GuardLink-enabled connection tap designed to integrate safety input devices with 5-pin OSSD (Output Signal Switching Device) contacts into a GuardLink safety network. Built by Rockwell Automation, this tap enables advanced diagnostics and system status visibility for machine safety applications while maintaining compliance with Category 3 safety standards.
Key Features
- 5-pin OSSD (Output Signal Switching Device) contact configuration for reliable safety signaling
- GuardLink enabled — supports advanced diagnostics and device monitoring capabilities accessible only through GuardLink enabled connections
- M12 Micro connector for quick-disconnect installation and system modularity
- Solid-state contact design for increased reliability and faster response times
- Red polycarbonate housing with IP67 ingress protection rating
- Panel-mount design with M5 screw terminals
Technical Specifications
- Part Number: 440S-SF5D
- Manufacturer: Allen-Bradley (Rockwell Automation)
- Connector Type: 5-pin Micro M12 Female
- Contact Type: Solid State OSSD
- Operating Voltage: 24V DC
- Operating Temperature Range: −20°C to +70°C (−4°F to +158°F)
- Housing Material: Polycarbonate
- Ingress Protection: IP67
- Mounting: Panel mount with M5 screws
- Certifications: CE, cUL/UL, RCM, CCC, KC
- UPC: 889508633886
Typical Applications
The 440S-SF5D is widely used in machine guarding systems, safety interlock circuits, and emergency stop networks. Common installations include:
- Automated machinery with guard door monitoring
- Emergency stop distribution networks
- Safety sensor integration on production equipment
- Industrial machine safety relay expansion
- Systems requiring Category 3 safety compliance
Compatibility & Replacements
Compatible With
- GuardLink safety systems and GuardLink-enabled devices
- Guardmaster safety relays and safety controllers
- Any machine safety application requiring 5-pin OSSD connections
- Safety-based control networks following ISO 13849-1 standards
- Systems supporting Power to Release (PTR) guard lock functions
Replaces / Drop-In Replacement For
Verify compatibility with your system integrator before ordering. The 440S-SF5D is a specific GuardLink smart tap configuration; verify exact model compatibility with existing systems.
Works With
- GuardLink communication protocol and safety network architecture
- Guardmaster safety relay products
- M12 female connector interface equipment
- Industrial automation safety software and monitoring platforms
- Category 3 safety-certified control systems












