A-B 440R-G23215 Guardmaster Safety Relay

Product Description

Allen-Bradley 440R-G23215 is a Guardmaster MSR142RTP Safety Relay manufactured by Rockwell Automation. It is a single-function safety monitoring relay designed to monitor safety devices such as emergency stops, safety switches, and safety light curtain outputs, providing reliable machine safety control.

The safety relay supports automatic/manual monitored reset, removable screw terminals, and multiple safety and auxiliary outputs for integration into industrial safety circuits.

Specifications

• Brand: Allen-Bradley (Rockwell Automation)
• Model: 440R-G23215
• Product Type: Safety Relay
• Series: Guardmaster MSR142RTP
• Power Supply: 115 VAC
• Relay Width: 67.5 mm
• Safety Inputs:
  • 1 × 2-channel NC input
  • OSSD safety input support
• Safety Outputs:
  • 7 × Normally Open (N.O.) safety outputs
• Auxiliary Outputs:
  • 4 × Normally Closed (N.C.) relay outputs
  • 2 × PNP solid-state outputs
• Reset Mode: Automatic / Manual Monitored Reset
• Terminals: Removable screw terminals
• Standards: CE, cULus, TÜV

Functions

• Monitors emergency stop circuits
• Monitors safety interlock switches
• Interfaces with safety light curtains and OSSD devices
• Provides redundant safety output switching
• Disconnects hazardous machine motion when safety devices are triggered
• Provides auxiliary status feedback signals to control systems

Advantages & Features

• High reliability safety monitoring
• Multiple safety outputs for flexible system design
• Supports automatic or monitored manual reset
• Removable terminals simplify maintenance
• Compact 67.5 mm housing design
• Suitable for Category safety applications depending on system architecture
• Compatible with Allen-Bradley Guardmaster safety systems

Applications

• Emergency stop circuits
• Safety door monitoring
• Machine guarding systems
• Industrial robots
• Packaging machinery
• CNC machines
• Automated production lines
• Factory safety control systems

Notes

• 440R-G23215 is a safety relay, not a standard control relay
• Requires proper safety circuit design and wiring
• Confirm input device type (NC contacts / OSSD) before installation
• Verify power supply voltage is 115VAC before use
• Safety performance depends on the complete machine safety architecture