Allen-Bradley 440R-M23084 Minotaur Safety Relay

The Allen-Bradley 440R-M23084 Minotaur MSR138.1DP safety relay is a 24 V AC/DC powered Minotaur module designed for safety-related machine control, delivering four normally open safety contacts for monitoring interlocks, gates, and safeguarding devices. It is a 45 mm wide, removable safety relay that can be configured in automatic or manually monitored modes and includes an adjustable output delay from 0.15 to 3 seconds, enabling controlled Safe Stop or Safe-Start behavior. Electrical ratings for the MSR138.1DP include resistive AC-1 up to 7 A at 250 V, DC-1 up to 7 A at 24 VDC, inductive AC-15 up to 6 A at 250 V (and 6 A at 125 V), and DC-13 up to 3 A at 24 VDC (with up to 6 A at 24 VDC under specified conditions), with UL B300 and UL 5 A/250 V ratings documented. The 440R-M23084 is part of Rockwell Automation’s Guardmaster Minotaur family, offering four normally open outputs suitable for safety circuits without requiring additional interposing relays, and is commonly applied in emergency-stop, safety-gate, light-curtain, or two-hand safety configurations when paired with compliant safety devices.