{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1902-1AV1","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1902-1AV1","canonicalUrl":"https://aoctrl.com/siemens/3RV1902-1AV1","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AV1","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1902-1AV1 undervoltage release, 415 V AC at 50 Hz / 480 V AC at 60 Hz, for circuit breaker sizes S00, S0, S2, S3, snap-on mounting, IP20 finger-safe front.","salesMarkdown":"The Siemens 3RV1902-1AV1 is a SIRIUS undervoltage release designed for motor circuit breakers in frame sizes S00, S0, S2, and S3. It operates on a 415 V AC control supply at 50 Hz and 480 V AC at 60 Hz, per the rated values. This is a phased-out product; the preferred successor is the 3RV2902-1AV1. ## Fit and mounting The 18.5 mm width and 68 mm depth keep it compact alongside the breaker. The front face carries an IP20 finger-safe rating per IEC 60529, so vertical contact from the front is protected — standard for a panel-mounted accessory. Pollution degree 3 environment is within spec. The 3RV1902-1AV1 is flagged as a phased-out product. The official Siemens successor is the 3RV2902-1AV1, which is the preferred replacement type. ## Environmental limits","metaTitle":"Siemens 3RV1902-1AV1 SIRIUS Undervoltage Release, 415VAC/480","metaDescription":"Siemens SIRIUS 3RV1902-1AV1 undervoltage release for motor circuit breakers S00-S3. 415 VAC at 50 Hz / 480 VAC at 60 Hz. Snap-on DIN rail. IP20 finger-safe. Phased-out; successor 3","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"68 mm","Width":"18.5 mm","Height":"90 mm","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","Fastening Method":"snap-on mounting","Final Rated Value":"60 Hz","Product Brand Name":"SIRIUS","Degree Of Pollution":"3","Initial Rated Value":"50 Hz","Product Designation":"undervoltage release","Suitability For Use":"motor circuit breaker","at 50 Hz rated value":"415 V","at 60 Hz rated value":"480 V","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Insulation Voltage Rated Value":"690 V","Design Of Short-Circuit Protection":"fuse","reference code acc. to DIN EN 61346-2":"F","Type Of Voltage Of The Control Supply Voltage":"AC","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","protection class IP on the front acc. to IEC 60529":"IP20","number of NO contacts for auxiliary contacts leading contact":"0","insulation voltage with degree of pollution 3 at AC rated value":"690 V","number of CO contacts of auxiliary contacts instantaneous contact":"0","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=401794&mlfb=3RV1902-1AV1","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AV1/alternatives.json"},"ai":{"faq":[{"question":"What replaces 3RV1902-1AV1?","answer":"The official Siemens successor is the 3RV2902-1AV1, listed as the preferred successor type."},{"question":"Where can I buy 3RV1902-1AV1?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What is the 3RV1902-1AV1 used for?","answer":"It is an undervoltage release for Siemens SIRIUS motor circuit breakers in frame sizes S00, S0, S2, and S3. It drops out the breaker when the control voltage falls below the dropout threshold, providing undervoltage protection for the motor circuit."},{"question":"What are the voltage ratings for 3RV1902-1AV1?","answer":"The coil is rated 415 V AC at 50 Hz and 480 V AC at 60 Hz. Insulation voltage is 690 V AC at pollution degree 3."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1902-1AV1","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/3RV1902-1AV1 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}}