Allen-Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay 440RD22R2

Description:

The Allen-Bradley 440R-D22R2 Guardmaster Dual Input Safety Relay is used in machine safety control systems to monitor dual-channel safety devices such as emergency stop buttons, safety gates, and light curtains. It provides safety-rated monitoring with internal fault detection and redundant safety outputs designed to ensure safe machine shutdown when hazardous conditions are detected. Commonly installed in manufacturing equipment, robotic work cells, packaging machinery, and automated production lines, this relay supports compliance with industrial machine safety standards. Maintenance teams and system integrators use this safety relay for safety system repairs, machine safety upgrades, control panel retrofits, and replacement of existing Guardmaster safety relays.

Applications:

The Allen-Bradley 440R-D22R2 Guardmaster safety relay is used in industrial safety systems where dual-channel safety monitoring is required to protect personnel and equipment. It is commonly applied in emergency stop circuits, safety gate monitoring systems, light curtain safety installations, and machine interlock systems in manufacturing lines, robotic cells, packaging machines, and automated industrial equipment.

Technical Specifications:

• Manufacturer Part Number (MPN): 440R-D22R2
• Product Type: Safety Relay
• Series: Guardmaster
• Safety Inputs: Dual Channel Input
• Safety Outputs: 2 Normally Open (NO) Safety Contacts
• Auxiliary Outputs: 1 Normally Closed (NC) Auxiliary Contact
• Supply Voltage: 24V DC
• Safety Category: Category 4 / SIL 3 / PLe capable
• Reset Type: Manual or Automatic Reset
• Mounting Type: DIN Rail Mount
• Operating Temperature: -5 to 55 °C (23 to 131 °F)

Common Replacements:

• Allen-Bradley 440R-S12R2
• Allen-Bradley 440R-D22R3
• Allen-Bradley 440R-N23132