{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2901-2F-ZX90","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2901-2F-ZX90","canonicalUrl":"https://aoctrl.com/siemens/3RV2901-2F-ZX90","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2901-2F-ZX90","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2901-2F-ZX90 auxiliary switch, transverse on the front, 2 NO contacts, spring-loaded terminals, for circuit breaker sizes S00, S0, S2, S3.","salesMarkdown":"The Siemens 3RV2901-2F-ZX90 is a SIRIUS auxiliary switch designed as a transverse front-mount accessory for 3RV2 circuit breakers in sizes S00, S0, S2, and S3. It provides two normally open (NO) instantaneous contacts, with spring-loaded terminals for tool-free wiring. The auxiliary contacts carry a maximum AC-12 rating of 2.5 A, but the real-world switching capacity depends on voltage: 1 A at 24 V, 0.3 A at 48 V, 0.15 A at 60 V, and 0.5 A at 230 V. These are the make-and-break limits for the contacts — if you're feeding a 24 VDC PLC input, you can pull the full 1 A through both NO contacts in parallel, but at 48 V you're limited to 0.3 A. The AC-12 rating (resistive load) is the ceiling; inductive loads like contactor coils or relay solenoids will need derating or a suppression network across the load. ## Wiring and terminal specs Spring-loaded terminals accept solid or stranded wire from 0.5 to 2.5 mm² (2x 0.5...2.5 mm² per clamp), or AWG 20 to 14. Finely stranded conductors with or without core-end processing are limited to 2x 0.5...1.5 mm². The plug-in fixing means the switch snaps onto the breaker without tools — no screws, no DIN rail slot consumed. This is a panel-builder's detail: the 17 mm depth keeps the assembly within the breaker's envelope, so you don't lose clearance to the enclosure door.","metaTitle":"Siemens 3RV2901-2F-ZX90 SIRIUS Auxiliary Switch, 2 NO, Sprin","metaDescription":"Siemens 3RV2901-2F-ZX90 SIRIUS auxiliary switch, transverse front, 2 NO contacts, spring-loaded terminals, 17 mm depth, active production, sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"17 mm","Solid":"2x (0.5 ... 2.5 mm²)","Width":"45 mm","title":"3RV2901-2F-ZX90","Height":"13 mm","at 24 V":"1 A","at 48 V":"0.3 A","at 60 V":"0.15 A","at 230 V":"0.5 A","description":"Auxiliary switch transverse 2 NO spring-type terminal for circuit breaker 3RV2 Multi-unit packaging 500 units","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, transverse on the front","Design Of The Product":"transverse auxiliary switches","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Substance Prohibitance (Date)":"05/28/2009","for AWG cables for auxiliary contacts":"2x (20 ... 14)","Finely Stranded With Core End Processing":"2x (0.5 ... 1.5 mm²)","Finely Stranded Without Core End Processing":"2x (0.5 ... 1.5 mm²)","operational current of auxiliary contacts at AC-12 maximum":"2.5 A","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","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/1225850366934c98a2d9251c209f1599.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=222878&mlfb=3RV2901-2F-ZX90"},"ai":{"faq":[{"question":"Where can I buy 3RV2901-2F-ZX90 and how do I get a price?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm price and lead time."},{"question":"Will 3RV2901-2F-ZX90 drop into a panel that was specified around 3RV2021-1GA25 without rewiring?","answer":"No — the 3RV2021-1GA25 is a complete motor-protective circuit breaker, while the 3RV2901-2F-ZX90 is only the auxiliary switch. It can snap onto the front of an existing 3RV2 breaker (sizes S00, S0, S2, S3) as a replacement or addition, but the auxiliary wires must be terminated into the spring terminals."},{"question":"What is 3RV2901-2F-ZX90's listed depth?","answer":"The depth is 17 mm — this is the dimension forward from the breaker face, not the overall depth including the breaker body."},{"question":"What compliance documentation does this brand provide for 3RV2901-2F-ZX90 (RoHS, REACH, UL, IEC)?","answer":"The part carries a substance prohibitance date of 05/28/2009, indicating RoHS and REACH compliance as of that date. The manufacturer can supply a current declaration of conformity on request."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2901-2F-ZX90","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/3RV2901-2F-ZX90 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}