{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9177-0TB50","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9177-0TB50","canonicalUrl":"https://aoctrl.com/siemens/3VA9177-0TB50","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9177-0TB50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON, 24 V module, accessory for 3VA6 150/250, 4 slots, 33x29x63 mm, IP20, -40 to 80 °C, active.","salesMarkdown":"The Siemens 3VA9177-0TB50 is an active-production SENTRON 24 V module designed as an accessory for the 3VA6 150/250 molded-case switch family. It mounts in the right switch pocket and provides four slots for communication and measurement functions — think of it as the brains interface for the breaker, not a standalone device. Key physical fit: 33 mm deep, 29 mm wide, 63 mm tall. That 29 mm width is the critical dimension for panel layout. It draws a maximum of 0.1 A from the 24 V supply and dissipates 2.4 W. The supply input uses screw-type terminals, and the module tolerates ±20% symmetrical variation on the 24 V control feed. ## What it does and doesn't do This module provides the 24 V power supply and communication interface for the electronic trip unit inside the 3VA6 breaker. It does NOT communicate with motor drives, function modules, or residual-current equipment. It also does NOT detect switch position (On/Off/Tripped) or exchange data with the trip unit directly — it's a power-and-connectivity pass-through, not a full data gateway. Rated protection class IP20 per IEC 60529 — suitable for dry indoor panel environments only. Pollution degree 3 (conductive or dry non-conductive pollution), overvoltage category I, and operating resource protection class III per IEC 61558.","metaTitle":"Siemens 3VA9177-0TB50 SENTRON 24 V Module, 4 Slots, Active","metaDescription":"Siemens 3VA9177-0TB50 SENTRON 24 V module accessory for 3VA6 150/250. 4 slots, 33x29x63 mm, IP20, active production. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"33 mm","Width":"29 mm","Height":"63 mm","Maximum":"80 °C","Minimum":"-40 °C","Accessories":"Communication and measurement function","Number Of Slots":"4","lifecycle_stage":"current","Mounting Position":"Right switch pocket","Product Brand Name":"SENTRON","Degree Of Pollution":"3","Product Designation":"24 V module","protection class IP":"20 acc. to IEC60529","Overvoltage Category":"1","Design Of The Product":"Accessories for 3VA","Suitability For Operation":"3VA6 150/250","Consumed Current / Maximum":"0.1 A","power loss [W] / rated value":"2.4 W","Communication With Motor Drive":"No","Communication With Function Module":"No","Operating Resource Protection Class":"III according to IEC61558","Electronic Tripping Unit Power Supply":"Yes","Communication With Residual Current Equipment":"No","detection of switch position: On, Off, Tripped":"No","Data Exchange With The Electronic Tripping Unit":"No","Type Of Electrical Connection / At The Inputs For Supply Voltage":"screw-type terminals","Relative Symmetrical Tolerance / Of The Operating Range Of The Control Feed Voltage":"20 %"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/33b589778794a27ea2b8c74a0a6333d4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650629&mlfb=3VA9177-0TB50","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9177-0TB50/alternatives.json"},"ai":{"faq":[{"question":"What is this part used for?","answer":"The 3VA9177-0TB50 is a 24 V module accessory for the Siemens SENTRON 3VA6 150/250 molded-case switch. It provides power and four communication/measurement slots for the breaker's electronic trip unit."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9177-0TB50","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/3VA9177-0TB50 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}}