{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9673-0JC43","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9673-0JC43","canonicalUrl":"https://aoctrl.com/siemens/3VA9673-0JC43","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9673-0JC43","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON TA4.3 circular conductor terminal voltage tap, 4 cables, external, 3 units, for 3VA55/3VA65/3VA66 breakers.","salesMarkdown":"The Siemens SENTRON 3VA9673-0JC43 is a TA4.3 circular conductor terminal voltage tap — a wire connector designed for four cables, with an integrated control wire voltage tap-off. It ships as a set of three units, intended as an accessory for the 3VA55, 3VA65, and 3VA66 molded-case circuit breaker frames. Per the datasheet, the terminal accepts copper or aluminum stranded conductors from 4/0 AWG up to 500 kcmil (120–240 mm²), with a specified tightening torque of 36.7 Nm. Finely stranded copper conductors also fall within the same 4/0–500 kcmil range. The control wire tap allows a smaller-gauge sense or control wire to be connected at the same lug point, eliminating the need for a separate tap block on the line side of the breaker — a clean integration detail for panel builders wiring metering or shunt-trip circuits. ## Integration note This terminal mounts externally on the line-side lugs of the compatible 3VA breaker frames. The stripped length per conductor is specified at 0.9 / 1.75 in — a detail worth confirming against your lug-landing dimensions before terminating. The 36.7 Nm torque is a firm value; a calibrated torque wrench is expected for installation.","metaTitle":"Siemens SENTRON 3VA9673-0JC43 TA4.3 Wire Connector, 4/0–500","metaDescription":"Siemens SENTRON 3VA9673-0JC43 TA4.3 wire connector with control wire voltage tap-off. Accepts 4/0–500 kcmil Cu/Al stranded. Active production, sourced to order. Request quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"title":"3VA9673-0JC43","Stranded":"120 - 240 mm²: 36.7 Nm","Accessories":"Wire connector","description":"Wire connector TA4.3 4 x 4/0…500 kcmil w. control wire volt. tap-off for 4 cables; 3 units accessories for: 3VA55/3VA65/3VA66","Finely Stranded":"185 185 mm2: 36.7 Nm","Stripped Length":"0.9 / 1.75 in","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"accessories","Design Of The Product":"circular conductor terminal voltage tap, 4 cables, external, 3 units","Designation / Of The Terminal":"TA4.3","For Copper Cable / Stranded / Maximum":"500 kcmil","For Copper Cable / Stranded / Minimum":"4/0 AWG","For Aluminum Cable / Stranded / Maximum":"500 kcmil","For Aluminum Cable / Stranded / Minimum":"4/0 AWG","For Copper Cable / Finely Stranded / Maximum":"500 kcmil","For Copper Cable / Finely Stranded / Minimum":"4/0 AWG","Type Of Electrical Connection / With Control Wire Tap":"Yes"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/19dd618f8e86fbfd78f45764a460f90d.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1414101&mlfb=3VA9673-0JC43"},"ai":{"faq":[{"question":"Where can I buy 3VA9673-0JC43 and how do I get a price?","answer":"The 3VA9673-0JC43 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 closest functional alternative to 3VA9673-0JC43?","answer":"The peer MPNs in evidence (5SL4363-7, 5SY4140-7, 5SL6006-7) are SENTRON miniature circuit breakers, not wire connectors or voltage taps. They serve a different function and are not drop-in substitutes for the 3VA9673-0JC43 terminal accessory."},{"question":"What conductor sizes does the 3VA9673-0JC43 accept?","answer":"It accepts copper or aluminum stranded conductors from 4/0 AWG minimum to 500 kcmil maximum, and finely stranded copper conductors in the same range. The tightening torque is 36.7 Nm."},{"question":"Will 3VA9673-0JC43 drop into a panel specified around a 5SL4363-7 breaker?","answer":"No. The 5SL4363-7 is a 3-pole miniature circuit breaker (MCB) with a different form factor and no external lug accessory provision. The 3VA9673-0JC43 is a terminal accessory for 3VA55/3VA65/3VA66 molded-case breakers, not for the 5SL series."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9673-0JC43","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/3VA9673-0JC43 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}}