{"product_id":"440r-n23126-allen-bradley-guardmaster-msr127t-safety-monitoring-relay","title":"440R-N23126 | Allen-Bradley | Guardmaster MSR127T Safety Monitoring Relay","description":"\u003ch2\u003e\u003cstrong\u003eProduct Description\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003e\u003cspan class=\"citation-311\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003e440R-N23126\u003c\/strong\u003e\u003cspan class=\"citation-311 citation-end-311\"\u003e\u003cspan\u003e \u003c\/span\u003eis a versatile, high-reliability safety monitoring relay within the Allen-Bradley Guardmaster MSR127T family.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-310 citation-end-310\"\u003eThis unit is specifically engineered to provide a robust interface between safety input devices—such as E-stops, light curtains, or safety gates—and the machine's final control elements.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIt ensures that any detected fault or safety breach results in an immediate and controlled cessation of hazardous motion.\u003c\/p\u003e\n\u003cp\u003e\u003cspan class=\"citation-309\"\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003c\/span\u003e\u003cstrong\u003eMSR127T (440R-N23126)\u003c\/strong\u003e\u003cspan class=\"citation-309 citation-end-309\"\u003e\u003cspan\u003e \u003c\/span\u003efeatures triple safety output contacts and a dedicated auxiliary contact for status feedback.\u003csup class=\"superscript\"\u003e\u003c\/sup\u003e\u003c\/span\u003e\u003cspan\u003e \u003c\/span\u003eIt supports both single and dual-channel wiring configurations, offering automatic or manual reset options to suit various operational safety requirements.\u003cspan\u003e \u003c\/span\u003e\u003cspan class=\"citation-308 citation-end-308\"\u003eIts compact 22.5 mm housing is designed for space-efficient DIN rail mounting in industrial control cabinets.\u003c\/span\u003e\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eDetailed Technical Specifications\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eModel Number\u003c\/strong\u003e:\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e440R-N23126\u003c\/strong\u003e\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eBrand\u003c\/strong\u003e: Allen-Bradley\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eProduct Line\u003c\/strong\u003e: MSR127T (Automatic\/Manual Reset)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Voltage\u003c\/strong\u003e: 24V AC\/DC\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Outputs\u003c\/strong\u003e: 3 Normally Open (N.O.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eAuxiliary Outputs\u003c\/strong\u003e: 1 Normally Closed (N.C.)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eInput Configuration\u003c\/strong\u003e: 1 N.C., 2 N.C., or Light Curtain (OSSD)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eReset Type\u003c\/strong\u003e: Monitored Manual or Automatic\/Manual (T-Type)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eHousing Width\u003c\/strong\u003e: 22.5 mm\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eMounting\u003c\/strong\u003e: 35 mm DIN Rail\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eTerminal Type\u003c\/strong\u003e: Removable Screw Terminals\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eSafety Category\u003c\/strong\u003e: Cat 4 per EN 954-1; SIL CL3 per EN 62061; PLe per ISO 13849-1\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eOperating Temperature\u003c\/strong\u003e: -5 to 55 degrees Celsius (23 to 131 degrees Fahrenheit)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eEnclosure Rating\u003c\/strong\u003e: IP40 (Terminal IP20)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eNet Weight\u003c\/strong\u003e: 0.26 kg (0.57 lbs)\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch2\u003e\u003cstrong\u003eIndustrial Application Scenarios\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e440R-N23126\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis widely utilized in high-risk manufacturing sectors, including automotive robotic cells, high-speed packaging machinery, and material handling systems. It serves as the primary logic device for E-stop circuits, ensuring that if a cable is cut or a contact welds, the system remains in a safe state and prevents an unexpected restart.\u003c\/p\u003e\n\u003ch2\u003e\u003cstrong\u003eProfessional FAQ\u003c\/strong\u003e\u003c\/h2\u003e\n\u003cul class=\"list-paddingleft-2\"\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eWhat is the difference between the MSR127T and the MSR127R?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eThe\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003eMSR127T\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003e(like this model) features an automatic\/manual reset, whereas the MSR127R version specifically supports \"Monitored Manual\" reset for applications requiring a reset button to be pressed and released.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003cli\u003e\n\u003cp\u003e\u003cstrong\u003eCan this relay be used with OSSD outputs from a light curtain?\u003c\/strong\u003e\u003c\/p\u003e\n\u003cp\u003eYes, the\u003cspan\u003e \u003c\/span\u003e\u003cstrong\u003e440R-N23126\u003c\/strong\u003e\u003cspan\u003e \u003c\/span\u003eis designed to interface directly with the semiconductor (OSSD) outputs common on modern safety light curtains and laser scanners.\u003c\/p\u003e\n\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"Allen Bradley","offers":[{"title":"Default Title","offer_id":53059844407480,"sku":"440R-N23126","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0935\/6132\/3704\/files\/440R-N23126.jpg?v=1773913957","url":"https:\/\/www.globalpetroparts.com\/products\/440r-n23126-allen-bradley-guardmaster-msr127t-safety-monitoring-relay","provider":"Global Petro Parts Automation","version":"1.0","type":"link"}