{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9673-0JC34","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9673-0JC34","canonicalUrl":"https://aoctrl.com/siemens/3VA9673-0JC34","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9673-0JC34","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON TA4.2 wire connector, 3 x 500-750 kcmil Cu/Al, with control wire voltage tap, for 3VA55/3VA65/3VA66, 3 units.","salesMarkdown":"The Siemens SENTRON 3VA9673-0JC34 is a TA4.2 circular conductor terminal with an integrated control wire voltage tap, designed for three-cable termination on 3VA55, 3VA65, and 3VA66 molded-case circuit breakers. It accepts stranded copper or aluminum conductors from 500 kcmil up to 750 kcmil, with a stripped length range of 1.1 to 2.3 inches. The terminal torque spec is 42.4 Nm for both 240-300 mm² stranded and 240 mm² finely stranded copper. The 500-750 kcmil range covers large feeder conductors typical of main breaker line-side connections in industrial switchboards. The 42.4 Nm torque spec is a high-value termination — you'll need a calibrated torque wrench, not a standard screwdriver, to land these lugs. The stripped length window (1.1/1.7/2.3 in) gives you flexibility to match the terminal lug depth, but the longest strip is for the largest cable gauge. The control wire voltage tap is the key differentiator here: it lets you pick off line-side voltage for a control transformer or metering without adding a separate tap block. That saves a DIN-rail slot and a wiring step in the panel.","metaTitle":"Siemens 3VA9673-0JC34 SENTRON Wire Connector TA4.2, 500-750","metaDescription":"Siemens SENTRON 3VA9673-0JC34 wire connector TA4.2 for 3 cables, 500-750 kcmil Cu/Al, with control wire voltage tap. Active production, sourced to order. Get a quote.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"title":"3VA9673-0JC34","Stranded":"240 300 mm2: 42.4 Nm","Accessories":"Wire connector","description":"Wire connector TA4.2 3 x 500 kcmil…750 kcmil w. control wire volt. tap-off for 3 cables; 3 units accessories for: 3VA55/3VA65/3VA66","Finely Stranded":"240 240 mm2: 42.4 Nm","Stripped Length":"1.1/1.7/2.3 in","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"accessories","Design Of The Product":"circular conductor terminal voltage tap, 3 cables, external, 3 units","Designation / Of The Terminal":"TA4.2","For Copper Cable / Stranded / Maximum":"750 kcmil","For Copper Cable / Stranded / Minimum":"500 kcmil","For Aluminum Cable / Stranded / Maximum":"750 kcmil","For Aluminum Cable / Stranded / Minimum":"500 kcmil","For Copper Cable / Finely Stranded / Maximum":"750 kcmil","For Copper Cable / Finely Stranded / Minimum":"500 kcmil","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=1414100&mlfb=3VA9673-0JC34"},"ai":{"faq":[{"question":"Where can I buy 3VA9673-0JC34 and get a price?","answer":"Sourced and quoted to order against an RFQ through independent distribution. Submit a request — availability and current pricing are confirmed at quote time."},{"question":"What wire sizes does the TA4.2 terminal accept?","answer":"It accepts stranded copper or aluminum conductors from 500 kcmil minimum to 750 kcmil maximum. For finely stranded copper, the range is also 500-750 kcmil. The terminal torque is 42.4 Nm for the 240-300 mm² range."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9673-0JC34","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/3VA9673-0JC34 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}}