Allen-Bradley 440R-S12R2 Guardmaster Safety Relay SI Single Input

Allen-Bradley 440R-S12R2 Guardmaster Safety Relay SI

The 440R-S12R2 is a Guardmaster SI (Single Input) monitoring safety relay designed for machine safety circuits. It provides SIL 3 / PL e / Category 4 safety integrity for applications including emergency stop, safety gate, and safety sensor monitoring. Features dual channel universal safety inputs compatible with E-Stop, safety interlock, and sensor contacts. Configurable: Auto (AM) / Manual Monitored (MM) via front-panel rotary switch. Compact 22.5 mm DIN rail mount housing with removable screw terminals and front-panel LED status indicators (PWR/Fault, IN, OUT).

Tech Data (440R-TD001)

Disclaimer: PLC Exchange is an independent reseller and is not an authorized distributor, affiliate, licensee, partner, or agent of Allen-Bradley / Rockwell Automation. All product information on this page is compiled from publicly-available manufacturer publications, technical data sheets, and catalog sources, each of which remains the copyright of its originating manufacturer. We make no representation or warranty, express or implied, regarding the accuracy, completeness, timeliness, or fitness for any particular purpose of the specifications or descriptions shown — content may contain errors, omissions, or out-of-date information. Product images are the property of their respective manufacturers, trademark owners, and source publications, and are displayed solely for identification purposes under the nominative fair use doctrine; images are representative and may depict a different configuration or catalog variant than the exact product listed. Purchasers should independently verify specifications against the current manufacturer publication before placing an order. All product names, trademarks, service marks, and registered trademarks are the property of their respective owners, and their use does not imply endorsement or affiliation.