Allen‑Bradley – 440R‑D22R2 – GuardMaster Dual‑Input Safety Monitoring Relay

 Main Features

• Manufacturer: Allen‑Bradley (Rockwell Automation) – GuardMaster series  

• Model/MPN: 440R‑D22R2 – Dual-input safety relay  

• Inputs: 2 universal dual-channel safety inputs—compatible with safety mats, light curtains, emergency stops, etc.  

• Safety Outputs:

  • 2 safety-related normally-open relay contacts (undelayed)

  • 1 normally-closed solid-state auxiliary output (diagnostic)  

• Control Logic: Rotary-configurable AND/OR logic with support for manual or automatic reset modes  

• Voltage & Power: Powered by 24 V DC; power consumption ~2.5 W  

• Safety Ratings: Meets ISO 13849‑1 Category 3, PLe; SIL 3 in safety circuits  

• Form Factor: Compact DIN‑rail module (~22 mm width), removable screw-clamp terminals, status LEDs

• Certifications: CE, UL, cUL, KC, CCC; supported on 24 V DC industrial control systems