{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9377-0TB50","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9377-0TB50","canonicalUrl":"https://aoctrl.com/siemens/3VA9377-0TB50","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9377-0TB50","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON 24V module accessory, 3VA9377-0TB50, for 3VA6 400/600, 4 slots, 0.1 A, 2.4 W, IP20, screw terminals.","salesMarkdown":"The Siemens SENTRON 3VA9377-0TB50 is a 24 V module accessory designed for the 3VA6 400/600 molded-case circuit breaker family. It provides the control supply and communication interface for the electronic trip unit, drawing a maximum of 0.1 A from the 24 V DC supply with a power loss of 2.4 W. The module occupies the right switch pocket of the 3VA6 breaker. It has four slots for communication and measurement functions, but note it does not itself communicate with a motor drive, function module, residual current equipment, or the electronic trip unit — it supplies power to the trip unit and provides screw-type terminal inputs for the 24 V DC supply. The 20 % symmetrical tolerance on the control supply voltage means the 24 V rail can sag to 19.2 V or rise to 28.8 V and the module still operates. Safety class III per IEC 61558 means it's a protective extra-low voltage (PELV) device — no earth connection required on the secondary side, which simplifies wiring in the panel. Dimensions of 63 mm height, 29 mm width, and 33 mm depth mean it fits within the 3VA6 breaker's switch pocket without extending beyond the breaker profile.","metaTitle":"Siemens SENTRON 3VA9377-0TB50 24V Module, 4 Slots, IP20","metaDescription":"Siemens SENTRON 3VA9377-0TB50 24V module accessory for 3VA6 400/600. 4 slots, 0.1A max, 2.4W loss, IP20. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Depth":"33 mm","Width":"29 mm","title":"3VA9377-0TB50","Height":"63 mm","Maximum":"80 °C","Minimum":"-40 °C","Accessories":"Communication and measurement function","description":"24 V module accessory for: 3VA6 400/600","Safety class":"III according to IEC61558","Number Of Slots":"4","Product version":"Accessories for 3VA","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","Suitability For Operation":"3VA6 400/600","Consumed Current / Maximum":"0.1 A","power loss [W] / rated value":"2.4 W","Communication With Motor Drive":"No","Communication With Function Module":"No","Electronic Tripping Unit Power Supply":"Yes","Rated control supply voltage Us with DC":"24 V","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":"$46.99","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/ec9d5544fbbe7480a14e5737614ffff4.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=650412&mlfb=3VA9377-0TB50"},"ai":{"faq":[{"question":"Where can I buy the 3VA9377-0TB50 and get a price?","answer":"The 3VA9377-0TB50 is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time — submit an RFQ for a firm quote."},{"question":"What is the 3VA9377-0TB50's depth?","answer":"The 3VA9377-0TB50 has a depth of 33 mm."},{"question":"What compliance documentation does Siemens provide for this module?","answer":"The module carries safety class III per IEC 61558, IP20 protection per IEC 60529, and pollution degree 3. It is a Siemens SENTRON product designed for the 3VA6 platform."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9377-0TB50","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/3VA9377-0TB50 when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-07-22T19:47:38.189Z","lastPublished":"2026-07-22T19:47:38.189Z","indexable":true}}