{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RN2011-2BA30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RN2011-2BA30","canonicalUrl":"https://aoctrl.com/siemens/3RN2011-2BA30","factsUrl":"https://aoctrl.com/api/mcp/products/3RN2011-2BA30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RN2 thermistor motor protection relay, 3RN2011-2BA30, 24 V rated supply, 22.5 mm width, IP20.","salesMarkdown":"The Siemens 3RN2011-2BA30 is a SIRIUS 3RN2 thermistor motor protection relay, designed to monitor motor winding temperature via PTC thermistors and trip on over-temperature, open-circuit, or short-circuit in the sensor circuit. Rated supply is 24 V AC/DC, occupying a single 22.5 mm DIN-rail slot — fits standard 35 mm rail via screw or snap-on mounting in any orientation. With an MTBF of 97 a and MTTFd of 303 a, the relay is built for long service in continuous-duty motor circuits; the ATEX approval and open/short-circuit detection make it suitable for hazardous-area motor protection loops. For BOM freeze or PCN-watch purposes, this part is not subject to end-of-life notification at this time; it can be specified into new designs with confidence in ongoing supply. ## Ratings in Context The relay's output contacts are rated 1 A at 24 V, 0.2 A at 125 V, and 0.1 A at 250 V — these are the switching limits for the alarm/trip signal, not motor current; the thermistor loop itself is low-energy. The unit supports external reset and has no auto-reset or error memory, meaning it latches on trip and requires a manual or remote reset after the fault clears — standard for safety-related motor protection. Width of 22.5 mm and height of 100 mm with 90 mm depth; mounts on 35 mm DIN rail with screw or snap-on, in any position. IP20 finger-safe enclosure. Terminals accept 20–12 AWG solid or stranded wire; clearance of 0 mm on all sides means no mandatory air gap to adjacent devices — can be packed tight on the rail.","metaTitle":"Siemens 3RN2011-2BA30 SIRIUS Thermistor Motor Protection Rel","metaDescription":"Siemens 3RN2011-2BA30 SIRIUS thermistor motor protection relay. 24 V rated supply, 22.5 mm wide, IP20. ATEX approved with open-circuit and short-circuit detection. MTBF 97 a, MTTFd","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Process / Temperature Controllers"],"specifications":{"MTBF":"97 a","Depth":"90 mm","MTTFd":"303 a","Solid":"20 ... 12","Width":"22.5 mm","Height":"100 mm","Upwards":"0 mm","at 24 V":"1 A","Forwards":"0 mm","Stranded":"20 ... 12","at 125 V":"0.2 A","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"No","At The Side":"0 mm","Rated Value":"24 ... 24 V","Error Memory":"No","Initial Value":"0.85","During Storage":"-40 ... +85 °C","External Reset":"Yes","lifecycle_stage":"current","During Operation":"-25 ... +60 °C","During Transport":"-40 ... +85 °C","Fastening Method":"screw and snap-on mounting onto 35 mm DIN rail","Full-Scale Value":"1.1","Product Category":"SIRIUS 3RN2 thermistor motor protection","Product Function":"thermistor motor protection","Mounting Position":"any","Product Brand Name":"SIRIUS","Between The Outputs":"Yes","Degree Of Pollution":"3","Product Designation":"Thermistor motor protection relay","display version LED":"Yes","protection class IP":"IP20","at 50 Hz rated value":"24 ... 24 V","at 60 Hz rated value":"24 ... 24 V","for AWG cables solid":"20 ... 12","Design Of The Product":"Standard evaluation unit with ATEX approval, open-circuit and short-circuit detection in the sensor circuit","for AWG cables stranded":"20 ... 12","Between Input And Output":"Yes","Relative Metering Precision":"2 %","Safe failure fraction (SFF)":"74 %","Substance Prohibitance (Date)":"05/28/2009","Type Of Electrical Connection":"spring-loaded terminal (push-in)","Dynamic Open-Circuit Detection":"Yes","Material Of Switching Contacts":"AgSnO2","Operating Frequency Rated Value":"50 ... 60 Hz","For Auxiliary And Control Circuit":"spring-loaded terminals (push-in)","Design Of The Electrical Isolation":"galvanic isolation","Relative Humidity During Operation":"70 %","Surge Voltage Resistance Rated Value":"4 kV","category according to EN ISO 13849-1":"1","Explosion Protection Category For Gas":"[Ex e] [Ex d] [Ex px]","Explosion Protection Category For Dust":"[Ex t] [Ex p]","due to burst according to IEC 61000-4-4":"2 kV (power ports) / 1 kV (signal ports)","reference code according to IEC 81346-2":"K","Finely Stranded With Core End Processing":"0.5 ... 2.5 mm²","average diagnostic coverage level (DCavg)":"18 %","Finely Stranded Without Core End Processing":"0.5 ... 4 mm²","number of CO contacts for auxiliary contacts":"2","number of NC contacts for auxiliary contacts":"0","number of NO contacts for auxiliary contacts":"0","shock resistance according to IEC 60068-2-27":"11g / 15 ms","Between The Voltage Supply And Other Circuits":"No","Type Of Voltage Of The Control Supply Voltage":"AC/DC","hardware fault tolerance according to IEC 61508":"0","vibration resistance according to IEC 60068-2-6":"10 ... 55 Hz: 0.35 mm","PFHD with high demand rate according to EN 62061":"3.76E-7 1/h","At Rate Of Recognizable Hazardous Failures (λDd)":"6.8E-8 1/h","Mechanical Service Life (Operating Cycles) Typical":"10 000 000","PFDavg with low demand rate according to IEC 61508":"0.0041","electrostatic discharge according to IEC 61000-4-2":"6 kV contact discharge / 8 kV air discharge","performance level (PL) according to EN ISO 13849-1":"c","Buffering Time In The Event Of Power Failure Minimum":"40 ms","At Rate Of Non-Recognizable Hazardous Failures (λDu)":"3.08E-7 1/h","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":"6 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/3RN2011-2BA30/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF of the 3RN2011-2BA30?","answer":"The MTBF is 97 a, with an MTTFd of 303 a, indicating high reliability for continuous motor protection duty."},{"question":"What are the key dimensions of the 3RN2011-2BA30?","answer":"Width 22.5 mm, height 100 mm, depth 90 mm — fits a single DIN-rail slot with no mandatory side clearance."},{"question":"Does the 3RN2011-2BA30 support ATEX applications?","answer":"Yes, the design includes ATEX approval and provides open-circuit and short-circuit detection in the sensor circuit, making it suitable for hazardous-area motor protection."},{"question":"What is the rated supply voltage for the 3RN2011-2BA30?","answer":"Rated supply is 24 V AC/DC, as specified for both 50 Hz and 60 Hz operation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RN2011-2BA30","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/3RN2011-2BA30 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}}