{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3UG4501-2AW30","brand":"Siemens","brandSlug":"siemens","productSlug":"3UG4501-2AW30","canonicalUrl":"https://aoctrl.com/siemens/3UG4501-2AW30","factsUrl":"https://aoctrl.com/api/mcp/products/3UG4501-2AW30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3UG4501-2AW30 level monitoring relay with analog setting, 24-240 VAC/DC rated supply, 3 A switching at 250 V, IP20, 22.5 mm wide.","salesMarkdown":"The Siemens SIRIUS 3UG4501-2AW30 is a level monitoring relay with analog setting — it watches a conductive liquid level (or any resistive probe path) and switches its output when the level crosses the set point. The rated supply voltage covers 24 to 240 V AC/DC, so it works on control transformers or direct from a 24 VDC panel supply without a separate power module. The output relay is rated 3 A at 250 V AC (50/60 Hz) and the same at 400 V, giving enough contact margin for piloting a contactor coil or a small pump directly. The start-up delay is adjustable from 0.5 to 10 seconds, which helps avoid nuisance trips on filling cycles or turbulent surfaces. IP20 protection means it belongs inside an enclosure, not out on the tank. The 24-240 VAC/DC rated supply means it can be wired into a 120 V or 230 V control circuit without a transformer, or run on 24 VDC if that's your panel standard. The 3 A contact rating at 250 V is enough for most pilot-duty loads; if you're switching a motor starter coil, check the inrush against the relay's make/carry capacity — the 3 A continuous rating is thermal, not inductive. The external reset input allows remote reset from a PLC or pushbutton, handy for unattended pump stations. The adjustable start delay (0.5-10 s) and the full-scale value setting (1.1) give you tuning range for different probe resistances and tank geometries.","metaTitle":"Siemens SIRIUS 3UG4501-2AW30 Level Monitoring Relay, 24-240","metaDescription":"Siemens SIRIUS 3UG4501-2AW30 level monitoring relay, rated 24-240 VAC/DC, 3 A at 250 V. IP20, snap-on mounting. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"NRND","categoryPath":["Process / Temperature Controllers"],"specifications":{"Depth":"91 mm","Solid":"24 ... 16","Width":"22.5 mm","Height":"94 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"24 ... 16","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 ... 240 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","at 240 V maximum":"4 VA","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 (24 ... 16)","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 ... 240 V","at 60 Hz rated value":"24 ... 240 V","at AWG cables stranded":"2x (24 ... 16)","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":"spring-loaded 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":"0.25 ... 1.5 mm²","Finely Stranded Without Core End Processing":"0.25 ... 1.5 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/3UG4501-2AW30/alternatives.json"},"ai":{"faq":[{"question":"What are the key ratings for this level relay?","answer":"Rated supply voltage 24-240 VAC/DC; output contact rated 3 A at 250 V AC (50/60 Hz) and 3 A at 400 V AC; adjustable start delay 0.5-10 s; operating temperature -25 to +60 °C; IP20; 22.5 mm wide."},{"question":"Can the 3UG4501-2AW30 be reset remotely?","answer":"Yes, it has an external reset input, so you can wire a remote pushbutton or a PLC digital output to reset the relay without opening the panel."},{"question":"What mounting options does it support?","answer":"It mounts on a DIN rail with screw and snap-on fastening. The mounting position is any orientation, and the width is 22.5 mm."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3UG4501-2AW30","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/3UG4501-2AW30 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}}