{"product_id":"allen-bradley-slc-500-440r-n23114-msr126-1t-guardmaster-msr126-1t-safety-relay","title":"Allen-Bradley 440R-N23114 MSR126.1T Guardmaster Safety Relay","description":"\u003cp\u003eThe Allen-Bradley 440R-N23114 MSR126.1T is a dual-channel safety monitoring relay from the Guardmaster series. It is designed to provide reliable safety control for industrial applications, including the monitoring of emergency stop buttons, safety gates, and light curtains. This unit features dual-channel input capability with integrated cross-fault detection to ensure high levels of safety integrity.\u003c\/p\u003e\u003ch3\u003eFeatures\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eCategory 4 per EN 954-1 and SIL 3 per IEC 61508 compliance\u003c\/li\u003e\n\u003cli\u003eStop category 0\u003c\/li\u003e\n\u003cli\u003e2 Normally Open (N.O.) safety outputs\u003c\/li\u003e\n\u003cli\u003e2 Normally Closed (N.C.) auxiliary outputs\u003c\/li\u003e\n\u003cli\u003eDual-channel operation with cross-fault monitoring\u003c\/li\u003e\n\u003cli\u003eConfigurable automatic or manual reset\u003c\/li\u003e\n\u003cli\u003eCompact 22.5 mm enclosure design\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eApplications\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eAutomotive \u0026amp; Tire Manufacturing: Monitoring E-stops and light curtains on robotic welding cells and presses.\u003c\/li\u003e\n\u003cli\u003eFood \u0026amp; Beverage Facilities: Safety monitoring for high-speed packaging, bottling, and protein lines.\u003c\/li\u003e\n\u003cli\u003eLife Sciences \u0026amp; Pharmaceuticals: Safety interlocking for serialization and packaging machinery.\u003c\/li\u003e\n\u003cli\u003eMetal \u0026amp; Mining Operations: Protection for safety gates and E-stops on lathes, conveyors, and mineral processors.\u003c\/li\u003e\n\u003cli\u003eWarehouse \u0026amp; Fulfillment Centers: Personnel protection for sorters and palletizers.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\u003ctable\u003e\n\u003ctr\u003e\n\u003ctd\u003eModel\u003c\/td\u003e\n\u003ctd\u003e440R-N23114 MSR126.1T\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003ePower Supply\u003c\/td\u003e\n\u003ctd\u003e24V AC\/DC\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eInputs\u003c\/td\u003e\n\u003ctd\u003eDual Channel\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eSafety Outputs\u003c\/td\u003e\n\u003ctd\u003e2 N.O.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eAuxiliary Outputs\u003c\/td\u003e\n\u003ctd\u003e2 N.C.\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMax Thermal Current (Ie)\u003c\/td\u003e\n\u003ctd\u003e1 x 6A, 2 x 4A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eMin Switched Current\/Voltage\u003c\/td\u003e\n\u003ctd\u003e10mA \/ 10V\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eContact Rating\u003c\/td\u003e\n\u003ctd\u003eDC-13 6A \/ 24V DC, 0.1Hz\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eReset Type\u003c\/td\u003e\n\u003ctd\u003eAutomatic \/ Manual\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eEnclosure Width\u003c\/td\u003e\n\u003ctd\u003e22.5 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003ctr\u003e\n\u003ctd\u003eTerminals\u003c\/td\u003e\n\u003ctd\u003eFixed\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\u003ch3\u003eInstallation Guidelines\u003c\/h3\u003e\u003cul\u003e\n\u003cli\u003eEnsure the power supply is disconnected before performing any wiring or installation.\u003c\/li\u003e\n\u003cli\u003eMount the relay on a standard DIN rail within a suitable industrial enclosure.\u003c\/li\u003e\n\u003cli\u003eFor dual-channel applications, ensure correct wiring to S11-S12 and S21-S22 to enable cross-fault detection.\u003c\/li\u003e\n\u003cli\u003eMaintain proper clearance around the unit to ensure adequate ventilation and cooling.\u003c\/li\u003e\n\u003cli\u003eUse shielded cables for safety input signals to minimize interference in high-EMI environments.\u003c\/li\u003e\n\u003cli\u003eVerify that the feedback loop is correctly wired if using manual reset mode.\u003c\/li\u003e\n\u003c\/ul\u003e\u003ch3\u003eFAQs\u003c\/h3\u003e\u003ch3\u003eWhat is the 440R-N23114?\u003c\/h3\u003e\u003cp\u003eThe Allen-Bradley Guardmaster MSR126.1T (Cat. No. 440R-N23114) is a 24V AC\/DC, dual-channel safety relay designed for monitoring safety gate interlocks, E-stops, and light curtains.\u003c\/p\u003e\u003ch3\u003eDoes the 440R-N23114 support cross-fault monitoring?\u003c\/h3\u003e\u003cp\u003eYes. When used in a 4-wire connection (S11-S12, S21-S22) for dual-channel safety inputs, the MSR126.1T performs cross-fault detection across the inputs.\u003c\/p\u003e\u003ch3\u003eWhat is the required input wiring for 2-channel?\u003c\/h3\u003e\u003cp\u003eThe 440R-N23114 is designed to monitor two normally closed (N.C.) inputs, typically connected to terminals S11-S12 and S21-S22.\u003c\/p\u003e","brand":"Allen-Bradley","offers":[{"title":"Default Title","offer_id":50988440355068,"sku":"440R-N23114 MSR126.1T","price":99.0,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0787\/9983\/1292\/files\/wm_1_c372463f-2ca9-4bdc-9e84-e0747cb2223d.jpg?v=1786902977","url":"https:\/\/www.electronicplc.com\/es\/products\/allen-bradley-slc-500-440r-n23114-msr126-1t-guardmaster-msr126-1t-safety-relay","provider":"Electronic PLC","version":"1.0","type":"link"}