{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RV1946-2B","brand":"Siemens","brandSlug":"siemens","productSlug":"3RV1946-2B","canonicalUrl":"https://aoctrl.com/siemens/3RV1946-2B","factsUrl":"https://aoctrl.com/api/mcp/products/3RV1946-2B","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS door-coupling rotary operating mechanism for heavy-duty conditions, circuit-breaker size S3, gray handle, screw fixing, 78mm depth, 75mm width, 75mm height, 300mm length.","salesMarkdown":"The Siemens 3RV1946-2B is a SIRIUS door-coupling rotary operating mechanism designed for heavy-duty operating conditions. It is specifically suited for use with circuit-breakers size S3 — the same frame as the 3RV2 series breakers up to about 40 A motor protection or 52 A for feeder duty. Mounting is by screw fixing in any position, and the gray handle extends through the enclosure door so the breaker can be switched without opening the panel. The mechanism is rated for up to 151 operating cycles per hour, which covers frequent manual isolation on a production line. The mechanism measures 75 mm wide by 75 mm high by 78 mm deep, with an overall length of 300 mm from the back of the operator to the end of the coupling shaft. That 300 mm reach means it can bridge a standard enclosure depth and still engage the breaker rotary switch without an extension. The shaft has zero offset in all directions (upwards, forwards, backwards, downwards, to the side all listed as 0 mm), so the handle sits directly over the breaker's rotary axis. The 40 mm diameter of the handle bezel is the cutout dimension you need for the enclosure door.","metaTitle":"Siemens 3RV1946-2B SIRIUS Door-Coupling Rotary Operator, S3","metaDescription":"Siemens 3RV1946-2B SIRIUS door-coupling rotary operating mechanism for S3 circuit breakers. Gray handle, screw fixing, -20 to +70°C. Phase-out — successor 3RV2946-2B. Sourced to or","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Motor Protection Circuit Breakers (MPCB)"],"specifications":{"Depth":"78mm","Width":"75mm","Height":"75mm","Length":"300mm","Upwards":"0mm","Diameter":"40mm","Forwards":"0mm","Backwards":"0mm","Downwards":"0mm","At The Side":"0mm","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","Operating Frequency Maximum":"151/h","Size Of The Circuit-Breaker":"S3","Color Of The Actuating Element":"gray"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$43.21","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=320565&mlfb=3RV1946-2B","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RV1946-2B/alternatives.json"},"ai":{"faq":[{"question":"Where can I buy 3RV1946-2B and get a price?","answer":"This part is sourced 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 on your quantity."},{"question":"What does the 3RV1946-2B fit?","answer":"It is a door-coupling rotary operating mechanism designed for Siemens SIRIUS circuit-breakers size S3 — the same frame used in 3RV2 motor-protective and feeder circuit breakers up to about 40 A motor full-load current."},{"question":"What is the depth and width of 3RV1946-2B?","answer":"The mechanism body is 78 mm deep and 75 mm wide. Overall length from mounting surface to end of coupling shaft is 300 mm. The handle bezel diameter is 40 mm."},{"question":"What temperature range can 3RV1946-2B handle?","answer":"Operating temperature is -20 to +70 °C; storage range is -50 to +80 °C."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RV1946-2B","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/3RV1946-2B 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}}