{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RN1012-2CB00","brand":"Siemens","brandSlug":"siemens","productSlug":"3RN1012-2CB00","canonicalUrl":"https://aoctrl.com/siemens/3RN1012-2CB00","factsUrl":"https://aoctrl.com/api/mcp/products/3RN1012-2CB00","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RN1 thermistor motor protection evaluation unit, 3RN1012-2CB00, 24 V AC/DC, 1 NO + 1 NC, spring-loaded terminals, IP20.","salesMarkdown":"The Siemens 3RN1012-2CB00 is a thermistor motor protection evaluation unit from the SIRIUS 3RN1 series, designed to monitor motor winding temperature via PTC thermistors and trip on over-temperature. It operates on 24 V AC/DC control voltage and provides one normally open plus one normally closed auxiliary contact. The 3RN1012-2CB00 is listed as a current-production part, but the manufacturer designates it as a phased-out product with a preferred successor: the 3RN2012-2BA30. The successor maintains the same 24 V AC/DC supply, 1 NO + 1 NC contact arrangement, and spring-loaded terminal type, but adds Manual/Auto/Remote operating modes. For new BOM lines or panel designs, the 3RN2012-2BA30 is the recommended drop-in replacement. Its 22.5 mm width (one modular unit) and 91 mm depth fit standard control-panel layouts without crowding adjacent devices. All auxiliary and control circuit connections use spring-loaded terminals, which speed wiring and reduce the risk of loosening under vibration compared to screw terminals. The part carries a RoHS compliance date of May 1, 2012, and is assigned reference code K per IEC 81346-2, indicating a control relay or protection function in system documentation.","metaTitle":"Siemens 3RN1012-2CB00 Thermistor Motor Protection, 24 V AC/D","metaDescription":"Siemens 3RN1012-2CB00 thermistor motor protection evaluation unit, 24 V AC/DC, 1 NO + 1 NC contact, spring-loaded terminals, IP20, active lifecycle with preferred successor 3RN2012","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Process / Temperature Controllers"],"specifications":{"Depth":"91 mm","Width":"22.5 mm","Height":"103 mm","Type Of Voltage":"AC/DC","lifecycle_stage":"current","Fastening Method":"screw and snap-on mounting","at DC rated value":"24 V","display version LED":"Yes","protection class IP":"IP20","at 50 Hz rated value":"24 V","at 60 Hz rated value":"24 V","Substance Prohibitance (Date)":"05/01/2012","Product Function Reclosing Lockout":"Yes","Ambient Temperature During Operation":"-25 ... +60 °C","reference code according to IEC 81346-2":"K","number of CO contacts for auxiliary contacts":"0","number of NC contacts for auxiliary contacts":"1","number of NO contacts for auxiliary contacts":"1","1 For Auxiliary And Control Circuit Rated Value":"50 Hz","2 For Auxiliary And Control Circuit Rated Value":"60 Hz","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/3RN1012-2CB00/alternatives.json"},"ai":{"faq":[{"question":"What is the preferred replacement for the 3RN1012-2CB00?","answer":"The preferred successor is the 3RN2012-2BA30. It shares the same 24 V AC/DC supply, 1 NO + 1 NC contacts, and spring-loaded terminals, but adds Manual/Auto/Remote selection."},{"question":"What are the key ratings of the 3RN1012-2CB00?","answer":"It operates on 24 V AC/DC control voltage, provides 1 normally open and 1 normally closed auxiliary contact, and has an ambient temperature range of -25 °C to +60 °C. The enclosure is IP20, and it mounts on a DIN rail with spring-loaded terminals."},{"question":"Does the 3RN1012-2CB00 have a reclosing lockout function?","answer":"Yes, the product function includes a reclosing lockout, preventing automatic restart after a trip until manually reset."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RN1012-2CB00","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/3RN1012-2CB00 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}}