{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG4501-1AA30","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG4501-1AA30","canonicalUrl":"https://aoctrl.com/siemens/3UG4501-1AA30","factsUrl":"https://aoctrl.com/api/mcp/products/3UG4501-1AA30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG4501-1AA30, level monitoring relay with analog setting, 24 V AC/DC, 3 A switching capacity, IP20, screw and snap-on mounting.","salesMarkdown":"The Siemens 3UG4501-1AA30 is a SIRIUS level monitoring relay with analog setting, designed to detect conductive liquid levels in tanks, wells, or sumps using two or three probe electrodes. It operates on a 24 V AC/DC supply and switches loads up to 3 A at 250 V or 400 V (50/60 Hz), making it suitable for direct control of small pumps, valves, or alarm circuits without an intermediate contactor. The 3 A switching capacity at 250/400 V covers most pilot-duty and small motor loads; for higher currents, use the relay to drive a contactor coil. The 22.5 mm width fits standard DIN-rail spacing; screw and snap-on mounting allows both permanent and tool-less installation. No last-time-buy or phase-out constraints apply. An external reset input (terminal) allows remote reset of the relay after a level trip — useful for unattended pump stations. The relay provides galvanic isolation between input (sensor) and output (load) circuits, preventing ground loops in multi-tank installations. The 3UG4501-1AA30 carries CE marking and is designed to meet IEC/EN 60947-5-1 and related standards. RoHS and REACH declarations are available from Siemens upon request.","metaTitle":"Siemens 3UG4501-1AA30 SIRIUS Level Monitoring Relay, 24 V AC","metaDescription":"Siemens 3UG4501-1AA30 SIRIUS level monitoring relay with analog setting. Rated 24 V AC/DC, 3 A switching at 250/400 V. IP20, screw/snap-on mounting. Active lifecycle, sourced to or","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":"92 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","At The Side":"0 mm","Rated Value":"24 ... 24 V","Initial Value":"0.85","When Starting":"0.5 ... 10 s","During Storage":"-40 ... +80 °C","External Reset":"Yes","at 24 V maximum":"2 VA","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +80 °C","Fastening Method":"screw and snap-on mounting","Full-Scale Value":"1.1","Product Function":"Monitoring relay for level monitoring","Delayed Switching":"1","Mounting Position":"any","Product Brand Name":"SIRIUS","Between The Outputs":"No","Degree Of Pollution":"3","Product Designation":"Level monitoring relay with analog setting","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":"24 ... 24 V","at 60 Hz rated value":"24 ... 24 V","at AWG cables stranded":"2x (20 ... 14)","Between Input And Output":"Yes","Relative Repeat Accuracy":"1 %","Adjustable Responsiveness":"Yes","temperature drift per °C":"1 %/°C","Inlet Monitoring Adjustable":"Yes","Relative Metering Precision":"20 %","Outlet Monitoring Adjustable":"Yes","Physical Measuring Principle":"conductive","Of The Control Supply Voltage":"AC/DC","Substance Prohibitance (Date)":"05/01/2012","Type Of Electrical Connection":"screw-type terminals","With Lower Or Upper Limit Violation":"0.5 ... 10 s","operational current at 17 V minimum":"5 mA","Surge Voltage Resistance Rated Value":"4 kV","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","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","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","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","Buffering Time In The Event Of Power Failure Minimum":"200 ms","Installation Altitude At Height Above Sea Level Maximum":"2 000 m","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/3UG4501-1AA30/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this level relay?","answer":"Supply voltage 24 V AC/DC; switching capacity 3 A at 250 V or 400 V (50/60 Hz); IP20; 22.5 mm wide; operating temperature -25 to +60 °C."},{"question":"How do I source the 3UG4501-1AA30?","answer":"It is an active Siemens SIRIUS catalog item. Submit an RFQ for a quote; no last-time-buy or allocation constraints apply."},{"question":"What compliance documentation is available?","answer":"CE marking, RoHS and REACH declarations of conformity are provided by Siemens. The relay is designed to IEC/EN 60947-5-1."},{"question":"Can this relay be used with a remote reset?","answer":"Yes, it has an external reset input, allowing remote reset after a level trip without accessing the panel."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG4501-1AA30","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/3UG4501-1AA30 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}}