{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2901-1G","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2901-1G","canonicalUrl":"https://aoctrl.com/siemens/3RV2901-1G","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2901-1G","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RV2901-1G auxiliary switch, transverse electronics-compatible, 1 CO, screw terminals, 0.3 A at 24 V, for 3RV2 breakers.","salesMarkdown":"It provides one CO (changeover) contact rated at 0.3 A at 24 V, 48 V, and 60 V, making it suitable for signaling to PLC inputs or other low-power control circuits. The 0.3 A rating at 24 V DC is the switching capacity for the auxiliary contact — enough for a typical PLC digital input or a small relay coil, but not for direct motor or heater loads. The electronics-compatible design means the contact is optimized for low-energy signals, reducing the risk of oxide film buildup that can cause intermittent faults in dry circuits. The 17 mm depth and 45 mm width match the standard footprint of SIRIUS S00, S0, S2, and S3 breakers, so it clips onto the front without increasing the panel depth beyond the breaker's own envelope. The 12 mm height keeps it clear of adjacent wiring channels. Screw-type terminals accept 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, with an AWG range of 20 to 14. RoHS compliance date is noted as May 1, 2012, so it meets current EU substance restrictions.","metaTitle":"Siemens 3RV2901-1G SIRIUS Auxiliary Switch, 1 CO, 0.3 A","metaDescription":"Siemens 3RV2901-1G SIRIUS electronics-compatible auxiliary switch, 1 CO contact, 0.3 A at 24 V, screw terminals, for 3RV2 breakers. Active production.","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 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"45 mm","title":"3RV2901-1G","Height":"12 mm","at 24 V":"0.3 A","at 48 V":"0.3 A","at 60 V":"0.3 A","description":"Auxiliary switch transverse solid-state compatible, 1 CO screw terminal for circuit breaker 3RV2","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, electronics compatible","Design Of The Product":"electronics compatible transverse auxiliary switch","Size Of The Circuit-Breaker":"S00, S0, S2, S3","Substance Prohibitance (Date)":"05/01/2012","at 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)","Type Of Electrical Connection For Auxiliary And Control Circuit":"screw-type terminals","number of CO contacts of auxiliary contacts instantaneous contact":"1","number of NC contacts for auxiliary contacts instantaneous contact":"0","number of NO contacts for auxiliary contacts instantaneous contact":"0","AWG number as coded connectable conductor cross section for auxiliary contacts":"20 ... 14"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$17.78","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/3a2deec16d132625124b87fe169ff14f.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=394414&mlfb=3RV2901-1G"},"ai":{"faq":[{"question":"What is the listed depth of the 3RV2901-1G?","answer":"The depth is 17 mm, which allows it to mount flush on the front of the 3RV2 breaker without increasing the overall panel depth."},{"question":"What conductor sizes does the screw terminal accept?","answer":"It accepts 2x (0.5 to 1.5 mm²) solid or 2x (0.75 to 2.5 mm²) stranded, with an AWG range of 20 to 14."},{"question":"Will 3RV2901-1G drop into a panel specified around 3RT1015-1BB42 without rewiring?","answer":"No — the 3RT1015-1BB42 is a contactor with a different mounting footprint and terminal layout. The 3RV2901-1G is designed specifically for 3RV2 breakers, not for contactors."},{"question":"What compliance documentation does this part carry?","answer":"The part is RoHS compliant with a substance prohibition date of May 1, 2012. The SIRIUS series typically carries CE, UL, and CSA certifications, though specific approvals are not listed in this evidence set."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2901-1G","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/3RV2901-1G 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}}