{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG5461-1AA40","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG5461-1AA40","canonicalUrl":"https://aoctrl.com/siemens/3UG5461-1AA40","factsUrl":"https://aoctrl.com/api/mcp/products/3UG5461-1AA40","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS DC load monitoring relay, 3UG5461-1AA40, measurable current -8…+8 A, PROFINET IO, adjustable voltage 0…800 V, 22.5 mm width.","salesMarkdown":"The Siemens SIRIUS 3UG5461-1AA40 is a DC load monitoring relay designed to supervise DC circuits for overcurrent, undercurrent, overvoltage, and undervoltage conditions, with a measurable current range of -8 to +8 A and an adjustable voltage range of 0 to 800 V. It communicates via PROFINET IO (conformity class A), making it a drop-in for modern networked control systems without needing a separate analog input card — the relay reports thresholds and trip status directly over the fieldbus. It carries EMC compliance to IEC 60947-1, IEC 61000-6-2, and IEC 61000-6-4, which covers industrial immunity and emission requirements for CE-marked panels.","metaTitle":"Siemens 3UG5461-1AA40 SIRIUS DC Load Monitoring Relay, ±8 A,","metaDescription":"Siemens SIRIUS 3UG5461-1AA40 DC load monitoring relay with ±8 A range, PROFINET IO, adjustable voltage 0–800 V. Currently in production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Process / Temperature Controllers"],"specifications":{"1":"-8 ... +8 A","2":"-8 ... +8 A","Note":"0.5 A 125 V AC, with resistive load up to 40 °C","Depth":"141.6 mm","Solid":"1x (0.5 ... 4 mm²), 2x (0.5 ... 2.5 mm²)","Width":"22.5 mm","Height":"100 mm","Upwards":"50 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"1x (0,5 ... 4 mm²), 2x (0,5 ... 2,5 mm²)","Backwards":"0 mm","Downwards":"50 mm","auto-RESET":"Yes","At The Side":"3 mm","When Starting":"0 ... 999 s","During Storage":"-40 ... +80 °C","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Product Function":"DC load monitoring relay","Mounting Position":"any","Measurable Current":"-8 ... +8 A","Product Brand Name":"SIRIUS","Product Designation":"DC load monitoring relay","protection class IP":"IP20","PROFINET IO protocol":"Yes","Design Of The Product":"for PROFINET","Response Time Maximum":"100 ms","power loss [W] maximum":"3 W","Adjustable Voltage Range":"0 ... 800 V","Between Input And Output":"Yes","measurable voltage at DC":"0 ... 800 V","overcurrent detection DC":"Yes","overvoltage detection DC":"Yes","PROFINET conformity class":"A","undercurrent detection DC":"Yes","undervoltage detection DC":"Yes","Electromagnetic Compatibility":"IEC 60947-1 / IEC 61000-6-2 / IEC 61000-6-4","Substance Prohibitance (Date)":"05/31/2019","Type Of Electrical Connection":"screw-type terminals","Type Of Current For Monitoring":"DC","Type Of Voltage For Monitoring":"DC","at AWG cables for main contacts":"1x (20 ... 12), 2x (20 ... 14)","Address Resolution Protocol (ARP)":"Yes","Design Of The Electrical Isolation":"Protective separation","interface design 1 RJ45 (Ethernet)":"Yes","supply voltage 1 at DC rated value":"24 V","With Lower Or Upper Limit Violation":"0 ... 999 s","Number Of Ports At The 1st Interface":"1","Surge Voltage Resistance Rated Value":"6 kV","at AWG cables for auxiliary contacts":"1x (20 ... 12), 2x (20 ... 14)","Between Control And Auxiliary Circuit":"24 V","EMC immunity according to IEC 60947-1":"ambience A (industrial sector)","Type Of Voltage Of The Supply Voltage":"DC","service for open IE communication LLDP":"Yes","Between Auxiliary And Auxiliary Circuit":"24 V","due to burst according to IEC 61000-4-4":"2 kV","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"2x (0,5 ... 1,5 mm²), 1x (0,5 ... 4 mm²)","network load class according to PROFINET":"1","transmission mode for Industrial Ethernet":"PROFINET with 100 Mbps full duplex (100BASE-TX)","number of interfaces according to PROFINET":"1","For Main Contacts With Screw-Type Terminals":"0.6 ... 0.8 N·m","Internal Resistance Of The Measuring Circuit":"10 mΩ","number of CO contacts for auxiliary contacts":"1","shock resistance according to IEC 60068-2-27":"sinusoidal half-wave 15g / 11 ms","Between The Voltage Supply And Other Circuits":"Yes","design of the interface Fast Ethernet interface":"Yes","vibration resistance according to IEC 60068-2-6":"1 ... 6 Hz: 15 mm, 6 ... 500 Hz: 2g","For Auxiliary Contacts With Screw-Type Terminals":"0.6 ... 0.8 N·m","EMC emitted interference according to IEC 60947-1":"ambience A (industrial sector)","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","Relative Temperature-Related Measurement Deviation":"0.5 %","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Product Component Removable Terminal For Main Circuit":"Yes","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","operating range factor supply voltage rated value at DC":"0.85 ... 1.15","product function at the 1st interface PROFINET IO device":"Yes","product function at the Ethernet interface Autocrossover":"Yes","Ampacity For Overcurrent Duration < 1 S Maximum Permissible":"1 A","Thermal Current Of The Switching Element With Contacts Maximum":"1 A","continuous current of the DIAZED fuse link of the output relay":"2 A","Electrical Endurance (Operating Cycles) For Relay Outputs Maximum":"100 000","Product Component Removable Terminal For Auxiliary And Control Circuit":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3UG5461-1AA40/alternatives.json"},"ai":{"faq":[{"question":"What is the mounting footprint?","answer":"It snaps onto a 35 mm DIN rail (screw and snap-on mounting) and occupies 22.5 mm width, 100 mm height, and 141.6 mm depth. Clearance: 50 mm above and below, 3 mm at the sides, 0 mm forward and backward."},{"question":"What wire sizes does the terminal accept?","answer":"Solid wire: 1x (0.5 to 4 mm²) or 2x (0.5 to 2.5 mm²). Stranded: same ranges. Strip length is not specified but standard for spring-cage terminals."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG5461-1AA40","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/siemens/3UG5461-1AA40 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-09-02T08:15:54.622Z","lastPublished":"2026-09-02T08:15:54.622Z","indexable":true}}