{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1901-2F","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1901-2F","canonicalUrl":"https://aoctrl.com/siemens/3RV1901-2F","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1901-2F","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS, auxiliary switch transverse on the front, 2 NO, spring-loaded terminals, 2.5 A max, for circuit breaker sizes S00/S0/S2/S3.","salesMarkdown":"The Siemens SIRIUS 3RV1901-2F is a transverse auxiliary switch that mounts on the front of select SIRIUS circuit breakers (sizes S00, S0, S2, S3) to provide two normally-open (NO) instantaneous auxiliary contacts. It uses spring-loaded terminals — no screwdriver needed for the control wiring — accepting solid conductors from 0.5 to 2.5 mm² and stranded with ferrule from 0.5 to 1.5 mm². The contact rating is 2.5 A maximum; at 24 V it switches 1 A, at 48 V 0.3 A, at 60 V 0.15 A, and at 230 V 0.5 A. The 3RV1901-2F is a phased-out product. The manufacturer lists a direct successor: the SIRIUS 3RV2 family, preferred successor type 3RV2901-2F. If you have this order code in a BOM or a panel drawing, the 3RV2901-2F is the official drop-in replacement to spec for new builds. The switch plugs into the front of the breaker — no DIN-rail space consumed beyond the breaker itself. It is designed for the SIRIUS 3RV1 and compatible 3RV2 series breakers in sizes S00, S0, S2, and S3. The spring-loaded terminals accept the same wire ranges as the breaker's auxiliary circuit, keeping the wiring consistent across the panel. The 2.5 A maximum is the total switching capacity across the two NO contacts — not per contact. Derate for inductive loads: the listed values at 24 V (1 A), 48 V (0.3 A), 60 V (0.15 A), and 230 V (0.5 A) are the actual switching limits at those voltages, so match the auxiliary load to the curve. The spring-loaded terminals (cage-clamp style) are fast to wire and vibration-resistant, common in panel builds where maintenance access is tight.","metaTitle":"Siemens 3RV1901-2F SIRIUS Auxiliary Switch, 2 NO, Spring Ter","metaDescription":"Siemens SIRIUS 3RV1901-2F transverse auxiliary switch, 2 NO contacts, spring-loaded terminals, 2.5 A max. Phased-out; successor 3RV2901-2F. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Solid":"2x (0.5 ... 2.5 mm²)","Maximum":"2.5A","at 24 V":"1A","at 48 V":"0.3A","at 60 V":"0.15A","at 230 V":"0.5A","During Storage":"-50 ... +80°C","lifecycle_stage":"current","During Operation":"-20 ... +60°C","Fastening Method":"plug-in fixing","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch, transverse on the front","With Core End Processing":"2x (0.5 ... 1.5 mm²)","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Without Core End Processing":"2x (0.5 ... 1.5 mm²)","at AWG cables for auxiliary contacts":"2x (20 ... 14)","Type Of Electrical Connection For Auxiliary And Control Circuit":"spring-loaded terminals","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":"2"}},"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=455480&mlfb=3RV1901-2F","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1901-2F/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1901-2F?","answer":"The 3RV1901-2F is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What replaces 3RV1901-2F?","answer":"The official successor is the SIRIUS 3RV2901-2F, which is the preferred replacement for new designs or BOM updates."},{"question":"What is the maximum switching capacity of 3RV1901-2F?","answer":"The maximum switching capacity is 2.5 A total across the two NO contacts. At 24 V it switches 1 A, at 48 V 0.3 A, at 60 V 0.15 A, and at 230 V 0.5 A."},{"question":"Will 3RV1901-2F fit a 3RV1011-0GA10 breaker?","answer":"Yes, the 3RV1901-2F fits SIRIUS circuit breakers of sizes S00, S0, S2, and S3. The 3RV1011-0GA10 is a size S00 breaker, so the auxiliary switch mounts directly on its front without rewiring the main circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1901-2F","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/3RV1901-2F 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}}