{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV5901-1A","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV5901-1A","canonicalUrl":"https://aoctrl.com/siemens/3RV5901-1A","factsUrl":"https://aoctrl.com/api/mcp/products/3RV5901-1A","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS lateral auxiliary switch, 1 NO + 1 NC, 10 A max, 9.5 mm wide, for circuit breaker sizes S00, S0, S2, S3, screw terminals, IP20.","salesMarkdown":"The contacts are rated for 10 A maximum, but that figure is tied to specific voltage and duty conditions. At 24 V the switch handles 2 A; at 230 V it handles 4 A; at 400 V it handles 3 A; at 690 V it handles 10 A. The AC-15 rating at 690 V is 1 A — that's the inductive-load rating for solenoid and contactor coils, which is the real-world limit for most control circuits at that voltage. The 110 V and 220 V ratings (0.5 A and 0.25 A respectively) cover the older control-voltage standards still common in retrofit work. Fastening is plug-in fixing — it snaps onto the side of the breaker without tools. Screw-type terminals accept two conductors per clamp: 2x (0.5 to 1.5 mm²) and 2x (0.75 to 2.5 mm²), or 2x (20 to 14 AWG). The front is finger-safe per IEC 60529 (IP20), so it meets the touch-protection requirement for exposed panel wiring. Dimensions: 90 mm high, 9.5 mm wide, 70 mm deep.","metaTitle":"Siemens 3RV5901-1A SIRIUS Lateral Auxiliary Switch, 1 NO + 1","metaDescription":"Siemens 3RV5901-1A SIRIUS lateral auxiliary switch for circuit breakers sizes S00-S3. 1 NO + 1 NC, 10A max, 9.5mm wide, IP20. Current production, available to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"70mm","Solid":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Width":"9.5mm","Height":"90mm","Maximum":"10A","at 24 V":"2A","at 110 V":"0.5A","at 220 V":"0.25A","at 230 V":"4A","at 250 V":"0.25A","at 400 V":"3A","at 690 V":"10A","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, lateral","Design Of The Product":"lateral auxiliary switches","With Core End Processing":"2x (0.5 ... 1.5 mm²), 2x (0.75 ... 2.5 mm²)","Size Of The Circuit-Breaker":"S00, S0, S2, S3","at AC-15 at 690 V rated value":"1A","at AWG cables for auxiliary contacts":"2x (20 ... 14)","touch protection on the front acc. to IEC 60529":"finger-safe, for vertical contact from the front","protection class IP on the front acc. to IEC 60529":"IP20","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"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/49b0319fdc7d3bcbb86d6d853e202a32.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=621612&mlfb=3RV5901-1A","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV5901-1A/alternatives.json"},"ai":{"faq":[{"question":"What circuit breaker sizes does the 3RV5901-1A fit?","answer":"It fits SIRIUS circuit breaker frame sizes S00, S0, S2, and S3."},{"question":"What is the contact configuration on 3RV5901-1A?","answer":"One normally-open and one normally-closed instantaneous contact (1 NO + 1 NC)."},{"question":"Where can I buy 3RV5901-1A?","answer":"The part is sourced and quoted to order against an RFQ through independent distribution channels, with availability and current pricing confirmed at quote time."},{"question":"What is the maximum switching current for 3RV5901-1A?","answer":"The maximum rating is 10 A, achieved at 690 V. At 230 V it handles 4 A; at 24 V it handles 2 A. The AC-15 inductive rating at 690 V is 1 A."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV5901-1A","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/3RV5901-1A 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}}