{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG4511-1AN20","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG4511-1AN20","canonicalUrl":"https://aoctrl.com/siemens/3UG4511-1AN20","factsUrl":"https://aoctrl.com/api/mcp/products/3UG4511-1AN20","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG4511-1AN20 phase monitoring relay, 160...260 V AC, 3 A rated contact, IP20, snap-on mounting.","salesMarkdown":"The Siemens 3UG4511-1AN20 is a SIRIUS phase monitoring relay designed for single-function AC voltage supervision. It monitors a 160...260 V AC supply at 50/60 Hz and provides a single changeover contact rated at 3 A at 250 V or 400 V AC. The rated supply voltage of 160...260 V AC at 50/60 Hz covers standard three-phase line-to-neutral or line-to-line monitoring in 230/400 V systems. The 3 A contact rating at 250 V AC (resistive) is sufficient for signaling to a PLC input or driving a small contactor coil; for higher loads, the relay should drive an intermediate contactor. Snap-on mounting to a DIN rail. Terminals accept solid or stranded wire from 20 to 14 AWG (2 x 20...14 AWG for solid). The screw-type terminals are common for this class; strip length and torque values follow standard Siemens SIRIUS practice. No special tooling required.","metaTitle":"Siemens 3UG4511-1AN20 SIRIUS Phase Monitoring Relay, 160-260","metaDescription":"Siemens 3UG4511-1AN20 SIRIUS phase monitoring relay, 160-260 V AC, 3 A contact rating, IP20, snap-on mounting. Active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Process / Temperature Controllers"],"specifications":{"Depth":"91 mm","Solid":"20 ... 14","Width":"22.5 mm","Height":"83 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"20 ... 14","at 125 V":"0.2 A","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"Yes","At The Side":"0 mm","Initial Value":"1","During Storage":"-40 ... +85 °C","For Monitoring":"AC","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"snap-on mounting","Full-Scale Value":"1","Product Function":"Phase monitoring relay","Delayed Switching":"1","Mounting Position":"any","Product Brand Name":"SIRIUS","Asymmetry Detection":"No","Between The Outputs":"Yes","Degree Of Pollution":"3","at AWG cables solid":"2x (20 ... 14)","display version LED":"Yes","protection class IP":"IP20","at 250 V at 50/60 Hz":"3 A","at 400 V at 50/60 Hz":"3 A","at 50 Hz rated value":"160 ... 260 V","at 60 Hz rated value":"160 ... 260 V","Design Of The Product":"1 function","Overvoltage Detection":"No","For Auxiliary Contacts":"1","Undervoltage Detection":"No","at AWG cables stranded":"2x (20 ... 14)","Phase Failure Detection":"No","Between Input And Output":"Yes","measurable voltage at AC":"160 ... 260 V","Phase Sequence Recognition":"Yes","Of The Control Supply Voltage":"AC","Overvoltage Detection 3 Phase":"No","Substance Prohibitance (Date)":"05/01/2012","Type Of Electrical Connection":"screw-type terminals","Undervoltage Detection 3 Phases":"No","Voltage Window Recognition 3 Phase":"No","operational current at 17 V minimum":"5 mA","Surge Voltage Resistance Rated Value":"6 kV","With Degree Of Pollution 3 Rated Value":"690 V","due to burst according to IEC 61000-4-4":"2 kV","number of NC contacts delayed switching":"0","number of NO contacts delayed switching":"0","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","Number Of Poles For Main Current Circuit":"3","Tightening Torque With Screw-Type Terminals":"0.8 ... 1.2 N·m","shock resistance according to IEC 60068-2-27":"sinusoidal half-wave 15g / 11 ms","Between The Voltage Supply And Other Circuits":"Yes","operating frequency with 3RT2 contactor maximum":"5 000 1/h","vibration resistance according to IEC 60068-2-6":"1 ... 6 Hz: 15 mm, 6 ... 500 Hz: 2g","Adjustable Open/Closed-Circuit Current Principle":"No","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","Thermal Current Of The Switching Element With Contacts Maximum":"5 A","continuous current of the DIAZED fuse link of the output relay":"4 A","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/3UG4511-1AN20/alternatives.json"},"ai":{"faq":[{"question":"Does this relay detect phase asymmetry or undervoltage?","answer":"No. The 3UG4511-1AN20 monitors phase loss and phase sequence only. Asymmetry detection and undervoltage/overvoltage detection are not supported; those functions are available on other SIRIUS 3UG4 variants."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG4511-1AN20","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/3UG4511-1AN20 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}}