Allen-Bradley 440R-M23088 MSR138.1DP Safety Relay

Allen-Bradley 440R-M23088 MSR138.1DP Safety Relay is a Guardmaster MSR138.1DP module designed for monitored safety in industrial equipment. The unit operates from a 24 V AC/DC coil and provides two normally open outputs for safety signaling, with a delayed output function that ranges from 0.5 to 10 seconds to accommodate guard monitoring timing. Identified by catalog number 440R-M23088, it belongs to the MSR138 (Minotaur) family and is intended to supervise safety sensors such as emergency stops and safety interlocks, delivering a controlled safety signal to downstream devices in a safety circuit. This model is used in machine safety applications to support safe shutdown procedures and integrate with Rockwell Automation safety architectures and Guardmaster wiring practices.