{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RA2923-2MB2","brand":"Siemens","brandSlug":"siemens","productSlug":"3RA2923-2MB2","canonicalUrl":"https://aoctrl.com/siemens/3RA2923-2MB2","factsUrl":"https://aoctrl.com/api/mcp/products/3RA2923-2MB2","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RC7 intelligent link modules, reversing starter kit 3RA2923-2MB2, for mounting on 60 mm busbar system or 3RV29 infeed system.","salesMarkdown":"The Siemens 3RA2923-2MB2 is a reversing starter kit purpose-built for the SIRIUS 3RC7 intelligent link module (ILM) family. It provides the mechanical and electrical reversing interlock for two contactors in a single assembly, sized for mounting on a 60 mm busbar system or a 3RV29 infeed system. ## What the 3RA2923-2MB2 does on the line This kit handles the reversing logic for a motor starter built around 3RC7 ILMs. Instead of wiring separate mechanical interlocks and busbars, the 3RA2923-2MB2 snaps onto the busbar and accepts two 3RC7 modules, providing the reversing interlock and power distribution in one package. It is the standard way to build a reversing starter in the SIRIUS compact form factor. Mounting options are the 60 mm busbar system common in IEC panels, or the 3RV29 infeed system for feeder integration. The kit's packaging dimensions of 105.5 x 45.5 x 49.5 mm give a sense of the panel space it occupies — roughly the width of a single 3RC7 module plus the interlock mechanism. RoHS compliance is confirmed effective October 1, 2023, so the kit meets the substance restrictions for European markets.","metaTitle":"Siemens 3RA2923-2MB2 Reversing Starter Kit for 3RC7 ILM","metaDescription":"Siemens 3RA2923-2MB2 reversing starter kit for SIRIUS 3RC7 intelligent link modules. Mounts on 60 mm busbar or 3RV29 infeed. Active production, RoHS compliant.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Motor Starters"],"specifications":{"Group Code":"R711","Product Group":"5344","Product class":"A: Standard product which is a stock item could be returned within the returns guidelines/period.","Quantity Unit":"1 Piece","Product Family":"SIRIUS 3RC7 intelligent link modules","lifecycle_stage":"current","Packaging Quantity":"1","Export Control Regulations":"AL : N / ECCN : N","Packaging dimensions (L x W x H)":"105.5 x 45.5 x 49.5 mm","Compliance with the substance restrictions according to RoHS directive":"Since: 01-10-23","REACH Art. 33 Duty to inform according to the current list of candidates":"Reach Information"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8b3d5047ede5937e29eda9206fdff8c9.pdf","sourceUrl":"https://sieportal.siemens.com/en-ae/products-services/detail/3RA2923-2MB2?tree=CatalogTree","alternativesUrl":"https://aoctrl.com/api/mcp/products/3RA2923-2MB2/alternatives.json"},"ai":{"faq":[{"question":"What is the 3RA2923-2MB2 used for?","answer":"The 3RA2923-2MB2 is a reversing starter kit for Siemens SIRIUS 3RC7 intelligent link modules. It mounts on a 60 mm busbar system or 3RV29 infeed system and provides the mechanical interlock and power distribution needed to build a reversing motor starter with two 3RC7 ILMs."},{"question":"Is 3RA2923-2MB2 compatible with 3RC7 intelligent link modules?","answer":"Yes, the 3RA2923-2MB2 is specifically designed for the SIRIUS 3RC7 intelligent link module family. It accepts two 3RC7 modules and provides the reversing interlock and busbar connection."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RA2923-2MB2","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/3RA2923-2MB2 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}}