MONITORING SAFETY RELAY 24V AC/DC 3NO 1NC

The ALLEN-BRADLEY 440R-C23139 is a safety relay that provides monitored automatic and manual safety control for machinery and guarding systems. Designed for 24V AC/DC operation with a removable module and 45mm housing width, it supports one 2 N.C. input plus a dedicated safety mat input and one LC input to monitor operator presence and interlocks. Outputs include three safety outputs and two normally-closed relay outputs to control stop circuits and machine power, with infinite reset capability for flexible restart behavior. Suited for applications requiring Category 4 safety performance, it is intended for control engineers and maintenance teams integrating reliable safety circuits.

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