{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RN2011-1BW30","brand":"Siemens","brandSlug":"siemens","productSlug":"3RN2011-1BW30","canonicalUrl":"https://aoctrl.com/siemens/3RN2011-1BW30","factsUrl":"https://aoctrl.com/api/mcp/products/3RN2011-1BW30","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RN2 thermistor motor protection relay, 3RN2011-1BW30, 24...240 V AC/DC, MTBF 97 a, MTTFd 303 a, 22.5 mm wide, screw and snap-on mounting on 35 mm DIN rail.","salesMarkdown":"## Reliability and duty-cycle profile The 3RN2011-1BW30 is a SIRIUS 3RN2 standard evaluation unit for thermistor motor protection, with ATEX approval and built-in open-circuit and short-circuit detection in the sensor circuit. Its MTBF of 97 a and MTTFd of 303 a give a quantified reliability picture for a motor protection relay that sits in the control circuit, not the power path — the failure mode is loss of thermal monitoring, not a motor fault, but the consequence is unplanned downtime if the relay fails to trip on an over-temperature event. Rated supply is 24...240 V AC/DC, covering most common control voltages without needing a separate transformer tap. The relay operates over -25 to +60 °C ambient and stores down to -40 °C — the storage range governs handling during shutdowns, not running conditions. ## Integration and mounting constraints Width is 22.5 mm, height 100 mm, depth 90 mm. No spacing required in any direction — upwards, downwards, forwards, backwards, and at the side all specify 0 mm clearance. That means it can be packed tight in a crowded DIN-rail row without derating for airflow. Terminals accept solid and stranded conductors 20...12 AWG (1x 20...12, 2x 20...14 for solid). The connector pitch is standard for 22.5 mm housings; strip length is typical for spring-cage or screw terminals on this class of relay.","metaTitle":"Siemens 3RN2011-1BW30 SIRIUS Thermistor Motor Protection Rel","metaDescription":"Siemens 3RN2011-1BW30 SIRIUS thermistor motor protection relay. MTBF 97 a, MTTFd 303 a. 24...240 V AC/DC supply, 22.5 mm wide, DIN rail. Current production. Sourced to order.","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 240 V":"0.2 ms","at 250 V":"0.1 A","Backwards":"0 mm","Downwards":"0 mm","auto-RESET":"No","At The Side":"0 mm","Rated Value":"24 ... 240 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 ... 240 V","at 60 Hz rated value":"24 ... 240 V","for AWG cables solid":"1x (20 ... 12), 2x (20 ... 14)","Design Of The Product":"Standard evaluation unit with ATEX approval, open-circuit and short-circuit detection in the sensor circuit","Between Input And Output":"Yes","Relative Metering Precision":"2 %","Safe failure fraction (SFF)":"74 %","Substance Prohibitance (Date)":"05/28/2009","Type Of Electrical Connection":"screw-type terminals","Dynamic Open-Circuit Detection":"Yes","Material Of Switching Contacts":"AgSnO2","Operating Frequency Rated Value":"50 ... 60 Hz","For Auxiliary And Control Circuit":"screw-type terminals","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 ... 4 mm²","average diagnostic coverage level (DCavg)":"18 %","Tightening Torque With Screw-Type Terminals":"0.6 ... 0.8 N·m","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":"Yes","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/3RN2011-1BW30/alternatives.json"},"ai":{"faq":[{"question":"What is the MTBF and MTTFd of the 3RN2011-1BW30?","answer":"MTBF is 97 a, MTTFd is 303 a. These figures apply to the relay in its intended thermistor motor protection application."},{"question":"What supply voltage does the 3RN2011-1BW30 accept?","answer":"Rated value is 24...240 V AC/DC at both 50 Hz and 60 Hz."},{"question":"What is the width and mounting requirement?","answer":"Width is 22.5 mm. Mounts by screw and snap-on onto 35 mm DIN rail, any position, with zero clearance needed in any direction."},{"question":"Does the 3RN2011-1BW30 have ATEX approval and sensor circuit diagnostics?","answer":"Yes, it is a standard evaluation unit with ATEX approval and includes open-circuit and short-circuit detection in the sensor circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RN2011-1BW30","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/3RN2011-1BW30 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}}