Allen-Bradley 440R-E23191 Guardmaster Safety Relay — MSR132E monitoring safety relay with expandable outputs. The Allen-Bradley 440R-E23191 is a Guardmaster MSR132E safety relay. It runs from a 24V DC supply and provides 4 N.O. immediate safety outputs plus 2 N.C. auxiliary outputs through fixed terminals in a 22.5 mm wide housing. It is rated to Category 4 per EN 954-1 / ISO 13849-1 for emergency stop and gate monitoring..
MPN / SKU: 440R-E23191
440R-E23191 Applications
The 440R-E23191 MSR132E monitors emergency stop buttons and interlocked guard door switches in machine safety circuits. Its four immediate safety outputs allow direct switching of multiple contactor or actuator circuits, while two N.C. auxiliary contacts provide status signaling to a controller. The narrow 22.5 mm housing conserves panel space in dense control cabinets. It meets Category 4 (EN 954-1 / ISO 13849-1) for high-integrity dual-channel monitoring. Typical uses include presses, conveyors, and packaging lines.
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