{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1902-1AF0","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1902-1AF0","canonicalUrl":"https://aoctrl.com/siemens/3RV1902-1AF0","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AF0","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV1902-1AF0 undervoltage release, 110 V AC at 50 Hz / 120 V AC at 60 Hz, snap-on mounting for circuit breaker sizes S00, S0, S2, S3.","salesMarkdown":"The Siemens SIRIUS 3RV1902-1AF0 is an undervoltage release designed for use with SIRIUS 3RV motor circuit breakers in sizes S00, S0, S2, and S3. This part is explicitly marked as a phased-out product. The official Siemens successor is the SIRIUS 3RV2902-1AF0, which is the preferred replacement type. If you are filling a BOM line or a panel that was specified around the 3RV1902-1AF0, the 3RV2902-1AF0 is the drop-in cross-reference to target. Depth is 68 mm, height 90 mm. It is designed for use with the SIRIUS 3RV motor circuit breaker family; the release mechanically couples to the breaker's trip mechanism, so no auxiliary contacts are needed for the trip function itself (the release has zero NO, NC, or CO contacts). ## Environmental and electrical ratings The control supply voltage is AC only — no DC variant here. The reference code per EN 61346-2 is F, classifying it as a protective device.","metaTitle":"Siemens 3RV1902-1AF0 SIRIUS Undervoltage Release, 110VAC/50H","metaDescription":"Siemens SIRIUS 3RV1902-1AF0 undervoltage release for motor circuit breakers sizes S00-S3. 110 V AC/50 Hz, 120 V AC/60 Hz. Phased-out; successor 3RV2902-1AF0 available. Sourced to o","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":"110 V","at 60 Hz rated value":"120 V","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Insulation Voltage Rated Value":"690 V","Design Of Short-Circuit Protection":"fuse","reference code according to EN 61346-2":"F","Type Of Voltage Of The Control Supply Voltage":"AC","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=175267&mlfb=3RV1902-1AF0","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1902-1AF0/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1902-1AF0 and how do I get a price?","answer":"We source this phased-out part to order against an RFQ through independent distribution channels. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"What is the closest functional second-source for 3RV1902-1AF0?","answer":"The official Siemens successor is 3RV2902-1AF0, which is the preferred replacement type. The 3RH2131-2AK60 is a different class of device (auxiliary contactor) and is not a functional substitute for an undervoltage release."},{"question":"What is 3RV1902-1AF0's listed depth and width?","answer":"Depth is 68 mm, width is 18.5 mm. The 18.5 mm width occupies one standard 18 mm DIN-rail module slot."},{"question":"Will 3RV1902-1AF0 drop into a panel specified around 3RH2131-2AK60?","answer":"No. The 3RH2131-2AK60 is an auxiliary contactor (45 mm wide, screw and snap-on mounting) with a different function and footprint. The 3RV1902-1AF0 is an undervoltage release that mechanically couples to a motor circuit breaker — it is not a panel-level replacement for a contactor."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1902-1AF0","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/3RV1902-1AF0 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}}