{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3RT1955-5QP31","brand":"Siemens","brandSlug":"siemens","productSlug":"3RT1955-5QP31","canonicalUrl":"https://aoctrl.com/siemens/3RT1955-5QP31","factsUrl":"https://aoctrl.com/api/mcp/products/3RT1955-5QP31","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SIRIUS 3RT1955-5QP31 changeover operating mechanism for contactors 3RT105, 3RT145, AC (50...60 Hz) / DC operation, 200...277 V, electronic with AS-Interface and RLT signal.","salesMarkdown":"The Siemens SIRIUS 3RT1955-5QP31 is a changeover operating mechanism designed for use with contactors 3RT105 and 3RT145. It accepts a control supply voltage of AC or DC, rated at 200 V DC and 277 V DC, and 277 V at both 50 Hz and 60 Hz. The mechanism is electronic and includes AS-Interface and RLT signal capability. ## Integration context As a changeover operating mechanism for the SIRIUS contactor family, the 3RT1955-5QP31 mounts directly onto the 3RT105 or 3RT145 contactor frame. The electronic design with AS-Interface integration means it connects to an AS-i network for control and status feedback, including the RLT (remote local trip) signal — useful for distributed I/O architectures in a control panel.","metaTitle":"Siemens SIRIUS 3RT1955-5QP31 Changeover Operating Mechanism,","metaDescription":"Siemens SIRIUS 3RT1955-5QP31 changeover operating mechanism for contactors 3RT105, 3RT145. AC/DC operation, 200-277 V, electronic with AS-Interface and RLT signal. Current lifecycl","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Contactors"],"specifications":{"title":"3RT1955-5QP31","description":"Changeover operating mechanism for contactors 3RT105, 3RT145 AC (50...60 Hz) / DC operation, 200... 277 V Operating mechanism: electronic with AS-Interface and RLT signal","lifecycle_stage":"current","Product brand name":"SIRIUS","1 at DC rated value":"200 V","2 at DC rated value":"277 V","Product designation":"Magnet coil","at 50 Hz rated value":"277 V","at 60 Hz rated value":"277 V","Type of voltage of the control supply voltage":"AC/DC"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ef3279d8e16f558e258e3c3d2a9a2c75.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=335608&mlfb=3RT1955-5QP31"},"ai":{"faq":[{"question":"What is the control supply voltage range?","answer":"It accepts AC or DC control supply voltage. DC ratings are 200 V and 277 V; AC ratings at both 50 Hz and 60 Hz are 277 V."},{"question":"Which contactors is this operating mechanism designed for?","answer":"It is designed for Siemens SIRIUS contactors 3RT105 and 3RT145."},{"question":"Does it include AS-Interface communication?","answer":"Yes, the electronic operating mechanism includes AS-Interface and an RLT signal."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3RT1955-5QP31","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/3RT1955-5QP31 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}}