{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV2946-2B","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV2946-2B","canonicalUrl":"https://aoctrl.com/siemens/3RV2946-2B","factsUrl":"https://aoctrl.com/api/mcp/products/3RV2946-2B","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS door-coupling rotary operating mechanism for circuit breaker size S3, standard design, gray handle, screw fixing, interlock feature, can be locked in OFF position, operating frequency max 15 1/h.","salesMarkdown":"The Siemens 3RV2946-2B is a door-coupling rotary operating mechanism from the SIRIUS family, designed for heavy-duty operation of circuit breakers in the S3 frame size. It mounts via screw fixing in any position and provides a gray handle to extend the breaker's toggle through an enclosure door, rated for up to 15 operations per hour. This mechanism includes an interlock and can be locked in the OFF position — a critical safety feature for lockout/tagout procedures on motor control centers or distribution panels where positive disconnection must be verified from outside the enclosure. The 3RV2946-2B is in product phase-out. The official successor is the 3RV2946-3B, which carries a drilling pattern change — meaning a panel already cut for the -2B variant will need rework or an adapter plate to accept the replacement. The screw-fixing method and any-position mounting simplify panel integration — no special bracket or orientation required.","metaTitle":"Siemens 3RV2946-2B SIRIUS Door-Coupling Rotary Operating Mec","metaDescription":"Siemens 3RV2946-2B SIRIUS door-coupling rotary operating mechanism for S3 circuit breakers. Phase-out; successor 3RV2946-3B. Screw fixing, interlock, -20 to +70°C. Sourced to order","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"78 mm","Width":"75 mm","Height":"75 mm","Length":"300 mm","Upwards":"0 mm","Diameter":"40 mm","Forwards":"0 mm","Backwards":"0 mm","Downwards":"0 mm","At The Side":"0 mm","During Storage":"-50 ... +80 °C","lifecycle_stage":"current","During Operation":"-20 ... +70 °C","Fastening Method":"screw fixing","Mounting Position":"any","Product Brand Name":"SIRIUS","Product Designation":"door-coupling rotary operating mechanism for heavy-duty operating conditions","Suitability For Use":"circuit-breakers S3","Design Of The Product":"standard","Product Feature Interlock":"Yes","Operating Frequency Maximum":"15 1/h","Size Of The Circuit-Breaker":"S3","Substance Prohibitance (Date)":"07/01/2006","Color Of The Actuating Element":"gray","product feature can be locked into OFF position":"Yes"}},"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=451673&mlfb=3RV2946-2B","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV2946-2B/alternatives.json"},"ai":{"faq":[{"question":"What is 3RV2946-2B used for?","answer":"It is a door-coupling rotary operating mechanism for Siemens SIRIUS circuit breakers in the S3 frame size. It lets an operator open or close the breaker from outside the enclosure while maintaining the door closed, and includes an interlock that can lock the breaker in the OFF position for lockout/tagout safety."},{"question":"Where can I buy 3RV2946-2B?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — no stock or price figures are published here."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV2946-2B","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/3RV2946-2B 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}}