{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9387-0TB10","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9387-0TB10","canonicalUrl":"https://aoctrl.com/siemens/3VA9387-0TB10","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9387-0TB10","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON COM060 communication module, 3VA9387-0TB10, 4 slots, 2.4 W, IP20, for 3VA2 400/630/1000 A breakers.","salesMarkdown":"The Siemens 3VA9387-0TB10 is a SENTRON COM060 communication module designed as an accessory for 3VA2 molded-case circuit breakers in the 400 A, 630 A, and 1000 A frame sizes, plus the COM800 communication system. It mounts in the right switch pocket of the breaker, occupying a footprint of 29 mm wide by 63 mm tall by 33 mm deep. This module is the communication gateway between the breaker's electronic trip unit and a higher-level control system. It draws a maximum of 0.1 A from the auxiliary supply and dissipates 2.4 W. It provides four slots for communication and measurement function modules, enabling data exchange with the trip unit, residual-current monitoring, and detection of switch position (On, Off, Tripped). The module is rated for overvoltage category I and pollution degree 3 environments, with an IP20 enclosure per IEC 60529. Operating resource protection class III per IEC 61558 applies. The communication bus supports a total cable length of 20 m with a single interface connected via a spur line using a T feeder. ## Integration notes The module snaps into the right switch pocket of the 3VA2 breaker frame. The 33 mm depth means it stays within the breaker's overall envelope, so no additional DIN-rail space is consumed. The spur-line T feeder connection is the only interface — plan for one drop per module on the communication bus.","metaTitle":"Siemens 3VA9387-0TB10 SENTRON COM060 Communication Module, 4","metaDescription":"Siemens 3VA9387-0TB10 SENTRON COM060 communication module for 3VA2 breakers. 4 slots, 2.4 W, 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":"COM060 communication module","protection class IP":"20 acc. to IEC60529","Overvoltage Category":"I","Design Of The Product":"Accessories for 3VA","Suitability For Operation":"3VA2 400/630 and COM800","Consumed Current / Maximum":"0.1 A","power loss [W] / rated value":"2.4 W","Communication With Function Module":"Yes","Operating Resource Protection Class":"III according to IEC61558","Electronic Tripping Unit Power Supply":"Yes","Communication With Residual Current Equipment":"Yes","detection of switch position: On, Off, Tripped":"Yes","Data Exchange With The Electronic Tripping Unit":"Yes","Total Length / Of The Circuit Breaker Communication System":"20 m","Number Of Interfaces / Of The Circuit Breaker Communication System":"1","Type Of Electrical Connection / Of The Circuit Breaker Communication Interface":"Spur line via T feeder"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/dad5006f763646b3b01964e27ed3482b.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=116459&mlfb=3VA9387-0TB10","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9387-0TB10/alternatives.json"},"ai":{"faq":[{"question":"What is the 3VA9387-0TB10 used for?","answer":"It is a SENTRON COM060 communication module that mounts on 3VA2 molded-case circuit breakers (400 A, 630 A, 1000 A frames) to enable data exchange with the electronic trip unit, residual-current monitoring, and switch-position detection."},{"question":"Where can I buy the 3VA9387-0TB10?","answer":"This part is sourced and quoted to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"What are the key dimensions of the 3VA9387-0TB10?","answer":"The module measures 29 mm wide, 63 mm high, and 33 mm deep."},{"question":"Does the 3VA9387-0TB10 replace a 5SY4140-7?","answer":"No. The 5SY4140-7 is a SENTRON miniature circuit breaker, a completely different class of device. The 3VA9387-0TB10 is a communication accessory for 3VA2 frame breakers and cannot drop into a panel wired for an MCB."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9387-0TB10","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/3VA9387-0TB10 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}}