{"product_id":"allen-bradley-440r-c23139-guardmaster-msr131rtp-safety-relay","title":"Allen Bradley 440R-C23139 Guardmaster MSR131RTP Safety Relay","description":"\u003ch3\u003eProduct Overview\u003c\/h3\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eAllen Bradley 440R-C23139\u003c\/strong\u003e, part of the Guardmaster MSR131RTP series, serves as a versatile monitoring solution for high-risk industrial safety circuits. This module manages inputs from light curtains, safety mats, and E-stop pushbuttons to ensure safe machine operation. It features a compact 45mm housing and provides triple-redundant safety outputs to disconnect power immediately upon a fault detection or safety breach. We supply this unit as\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New and Original\u003c\/strong\u003e, ensuring your facility meets stringent global safety standards with factory-certified hardware.\u003c\/p\u003e\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cp\u003eThe 440R-C23139 provides robust logic monitoring with the following technical parameters:\u003c\/p\u003e\n\u003ctable\u003e\n\u003cthead\u003e\n\u003ctr class=\"firstRow\"\u003e\n\u003ctd\u003e\u003cstrong\u003eFeature\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cstrong\u003eSpecification\u003c\/strong\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/thead\u003e\n\u003ctbody\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eManufacturer\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAllen Bradley (Rockwell Automation)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSeries\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eGuardmaster MSR131RTP\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSupply Voltage\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e24V AC\/DC\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eSafety Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e3 N.O. (Normally Open)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eAuxiliary Outputs\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e2 N.C. \/ 2 PNP Solid State\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eInputs Supported\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e1 N.C., 2 N.C., Light Curtains, Safety Mats\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eReset Type\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eAutomatic or Manual Monitored\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eHousing Width\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e45 mm\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eTerminals\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003eRemovable Screw Terminals\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003e\u003cspan\u003e\u003cstrong\u003eWeight\u003c\/strong\u003e\u003c\/span\u003e\u003c\/td\u003e\n\u003ctd\u003e\u003cspan\u003e0.70 lbs (0.32 kg)\u003c\/span\u003e\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/tbody\u003e\n\u003c\/table\u003e\n\u003ch3\u003eEngineering Advantages\u003c\/h3\u003e\n\u003cp\u003eThe 440R-C23139 addresses complex safety integration and maintenance requirements:\u003c\/p\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eUniversal Input Compatibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThis relay accepts diverse signal types, including OSSD signals from light curtains and resistive signals from safety mats. This flexibility allows engineers to standardize on a single relay model across multiple machine safety zones.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eStreamlined Maintenance:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe unit utilizes removable screw terminals. This design allows technicians to replace the module in seconds without re-wiring the entire safety cabinet, significantly reducing downtime during scheduled inspections or hardware upgrades.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMonitored Reset Flexibility:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eThe module supports both automatic and manual monitored reset modes. Manual monitored reset ensures that the machine cannot restart until the operator clears the safety zone and manually toggles the reset button, preventing accidental start-ups.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAuxiliary Feedback Channels:\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eBeyond the primary safety outputs, the unit provides two PNP solid-state auxiliary outputs. These channels feed real-time status data directly to your PLC or HMI, allowing for immediate diagnostic visualization of the safety circuit's state.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3\u003eFAQs\u003c\/h3\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan I use this relay with a 24V AC power source?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes. The 440R-C23139 features a flexible power stage that accepts both 24V DC and 24V AC (50\/60Hz) supply voltages, facilitating installation in varied control environments.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the N.O. and N.C. outputs on this device?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe 3 N.O. (Normally Open) outputs serve as your safety-rated path to cut power to motors or actuators. The 2 N.C. and PNP outputs function as auxiliary signals for status monitoring and should not perform safety-critical switching.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this unit support \"Category 4\" safety applications?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe MSR131RTP series supports high-level safety categories. However, your specific rating depends on the dual-channel wiring and the architecture of your entire safety loop. Always consult your safety risk assessment before final commissioning.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHow do I confirm this is a Brand New unit?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eWe guarantee the 440R-C23139 is\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e100% Brand New\u003c\/strong\u003e. Every unit arrives in original Rockwell Automation packaging with intact factory seals, matching serial numbers, and a 2026-era manufacturing date code where applicable.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":52793220170037,"sku":"440R-C23139","price":66.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0973\/7630\/5461\/files\/440R-C23139.png?v=1777359145","url":"https:\/\/www.5gplc.com\/products\/allen-bradley-440r-c23139-guardmaster-msr131rtp-safety-relay","provider":"High Five PLC Solution Limited","version":"1.0","type":"link"}