{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1902-1AP0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1902-1AP0","canonicalUrl":"https://aoctrl.com/siemens/3RV1902-1AP0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AP0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS undervoltage release, 3RV1902-1AP0, 230 V AC/50 Hz, 240 V AC/60 Hz, snap-on mounting, IP20 finger-safe, for circuit breaker sizes S00 through S3.","salesMarkdown":"The Siemens 3RV1902-1AP0 is a SIRIUS undervoltage release — a control-voltage accessory that trips a motor circuit breaker when the supply voltage drops below the coil's dropout threshold. It mounts onto the front of SIRIUS 3RV1/3RV2 circuit breakers in frame sizes S00, S0, S2, and S3, snapping onto the DIN-rail assembly without extra hardware. Auxiliary contacts are not included on this release — zero NO, NC, or CO contacts are built in. ## Lifecycle and replacement path This order code is a phased-out product. The manufacturer's designated successor is the SIRIUS 3RV2902-1AP0, listed as the preferred replacement type. The release measures 90 mm high, 18.5 mm wide, and 68 mm deep. The 18.5 mm width matches the standard single-module DIN-rail footprint — it occupies one 18 mm slot on the rail, leaving adjacent space for other control devices. The insulation voltage is rated 690 V AC at pollution degree 3, which covers most industrial panel environments with conductive contamination. The 3RV1902-1AP0 carries the reference code 'F' per DIN EN 61346-2, which identifies it as a protective device in the functional location standard. For procurement documentation, the product is part of the Siemens SIRIUS family and follows the standard RoHS/REACH compliance framework for industrial control gear — specific certificates are included with the shipment per the order requirements.","metaTitle":"Siemens 3RV1902-1AP0 SIRIUS Undervoltage Release, 230 V AC","metaDescription":"Siemens SIRIUS 3RV1902-1AP0 undervoltage release, 230 V AC/50 Hz, 240 V AC/60 Hz. Phased-out; successor 3RV2902-1AP0. Sourced to order. IP20, snap-on for S00-S3 breakers.","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":"230 V","at 60 Hz rated value":"240 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=314685&mlfb=3RV1902-1AP0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AP0/alternatives.json"},"ai":{"faq":[{"question":"What is the closest functional second-source for 3RV1902-1AP0?","answer":"The official replacement is the Siemens 3RV2902-1AP0. For a different frame size or rating, the 3RV1011-0GA10 is a SIRIUS motor circuit breaker in size S00, but it is a different device class (circuit breaker vs undervoltage release) — it does not drop in as a functional substitute for the release function."},{"question":"Where can I buy 3RV1902-1AP0 and how is it quoted?","answer":"This part is sourced to order through independent distribution against an RFQ. Availability and current pricing are confirmed at quote time — submit an RFQ for your target quantity and the desk will return a firm price and lead-time window."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1902-1AP0","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/3RV1902-1AP0 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}}