{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV6901-1A","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV6901-1A","canonicalUrl":"https://aoctrl.com/siemens/3RV6901-1A","factsUrl":"https://aoctrl.com/api/mcp/products/3RV6901-1A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS lateral auxiliary switch, 1 NO + 1 NC, 9.5 mm wide, for circuit breaker sizes S00, S0, S2, S3, screw-type terminals.","salesMarkdown":"The Siemens 3RV6901-1A is a lateral auxiliary switch from the SIRIUS family, designed to snap onto the side of a circuit breaker in sizes S00, S0, S2, or S3. It adds one normally-open and one normally-closed contact to the breaker assembly, letting you pick up status or interlock signals directly from the breaker mechanism without extra wiring to a separate relay. The contact ratings are voltage-dependent, which is typical for auxiliary contacts in a motor branch circuit. At 24 V the switch handles 2 A; at 230 V it handles 4 A; at 690 V it handles 10 A. The AC-12 maximum is 10 A, and the AC-15 rating at 690 V is 1 A — the AC-15 figure governs switching of electromagnetic loads like contactor coils, so that lower number is the one to watch when you're feeding a PLC input or a contactor coil from this switch. The switch uses plug-in fixing — it clips onto the side of the breaker without tools. At 9.5 mm wide, it adds minimal width to the breaker footprint. The screw-type terminals accept 0.5 to 2.5 mm² solid or stranded wire, or two conductors per terminal (2x 0.5…1.5 mm² or 2x 0.75…2.5 mm²). AWG 20 to 14 for the auxiliary circuit. ## Compliance The part carries the SIRIUS brand and is designed to meet the usual Siemens industrial approvals (CE, UL/CSA for the breaker family).","metaTitle":"Siemens 3RV6901-1A SIRIUS Auxiliary Switch, 1 NO + 1 NC, 9.5","metaDescription":"Siemens 3RV6901-1A SIRIUS lateral auxiliary switch for circuit breakers sizes S00-S3. 1 NO + 1 NC, 9.5 mm wide, screw terminals, active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"70 mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"9.5 mm","Height":"90 mm","at 24 V":"2 A","at 110 V":"0.5 A","at 220 V":"0.25 A","at 230 V":"4 A","at 250 V":"0.25 A","at 400 V":"3 A","at 690 V":"10 A","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +60 °C","Fastening Method":"plug-in fixing","Solid Or Stranded":"0.5 ... 2.5 mm²","Product Brand Name":"SIRIUS","Product Designation":"auxiliary switch, lateral","Design Of The Product":"lateral auxiliary switches","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Substance Prohibitance (Date)":"05/01/2012","for AWG cables for auxiliary contacts":"2x (20 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","operational current at AC-15 at 690 V rated value":"1 A","operational current of auxiliary contacts at AC-12 maximum":"10 A","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","number of CO contacts of auxiliary contacts instantaneous contact":"0","number of NC contacts for auxiliary contacts instantaneous contact":"1","number of NO contacts for auxiliary contacts instantaneous contact":"1","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"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=621346&mlfb=3RV6901-1A","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV6901-1A/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RV6901-1A used for?","answer":"It is a lateral auxiliary switch that mounts on the side of Siemens SIRIUS circuit breakers in sizes S00, S0, S2, and S3, providing one NO and one NC contact for status feedback or interlocking."},{"question":"Where can I buy 3RV6901-1A?","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 depth of 3RV6901-1A?","answer":"The depth is 70 mm."},{"question":"What wire sizes does the 3RV6901-1A accept?","answer":"The screw terminals accept solid or stranded wire from 0.5 to 2.5 mm², or two conductors per terminal: 2x 0.5…1.5 mm² or 2x 0.75…2.5 mm². AWG 20 to 14 for the auxiliary circuit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV6901-1A","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/3RV6901-1A 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}}