{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"3VA9771-0JJ53","brand":"Siemens","brandSlug":"siemens","productSlug":"3VA9771-0JJ53","canonicalUrl":"https://aoctrl.com/siemens/3VA9771-0JJ53","factsUrl":"https://aoctrl.com/api/mcp/products/3VA9771-0JJ53","rawCanonicalId":null},"summary":{"shortDescription":"Siemens SENTRON accessories, TA7.3 circular conductor terminal, 1 unit, for 3-pole 3VA58/3VA68 circuit breakers, 300-600 kcmil Cu, 300-400 kcmil Al.","salesMarkdown":"The 3VA9771-0JJ53: For stranded copper, this connector accepts 300 kcmil minimum up to 600 kcmil maximum. For stranded aluminum, it handles 300 kcmil minimum up to 400 kcmil maximum. The stripped length needed is 1.2 inches — mark your jacket before you cut. This terminal is designed specifically for 3-pole 3VA58 and 3VA68 frames. It's not a universal lug — it mates to the breaker's line or load side bus bar interface. The TA7.3 designation means it's the circular-pattern version, not a split-bolt or mechanical set-screw style. No control wire tap on this one, so it's strictly for power feed-through. ## Sourcing reality — active, quoted to order The lifecycle status is active — Siemens still lists this as a current product. No last-time-buy notice, no phase-out date on the horizon. That means it's a safe BOM line item for new builds or panel retrofits.","metaTitle":"Siemens SENTRON 3VA9771-0JJ53 TA7.3 Wire Connector, 300-600","metaDescription":"Siemens SENTRON TA7.3 wire connector for 3VA58/3VA68 breakers. Accepts 300-600 kcmil Cu or 300-400 kcmil Al. Active production. Quoted to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":"Active","categoryPath":["Circuit Breaker Accessories"],"specifications":{"Stranded":"300-400 kcmil: 600lb-in; 500-600 kcmil: 780 lb-in 500-600 kcmil-88,1 lb-in","Accessories":"Wire connector","Stripped Length":"1.2 in","lifecycle_stage":"current","Product Brand Name":"SENTRON","Product Designation":"accessories","Design Of The Product":"circular conductor terminal 1 unit","Designation / Of The Terminal":"TA7.3","For Copper Cable / Stranded / Maximum":"600kcmil","For Copper Cable / Stranded / Minimum":"300kcmil","For Aluminum Cable / Stranded / Maximum":"400kcmil","For Aluminum Cable / Stranded / Minimum":"300kcmil","Type Of Electrical Connection / With Control Wire Tap":"No"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$158.75","priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/df6b9f1d7e7aae07fe6218fb7910eddc.pdf","sourceUrl":"https://support.industry.siemens.com/webbackend/api/ProductSupport/TechnicalData?language=en&region=cn&productId=1542226&mlfb=3VA9771-0JJ53","alternativesUrl":"https://aoctrl.com/api/mcp/products/3VA9771-0JJ53/alternatives.json"},"ai":{"faq":[{"question":"What wire sizes does the TA7.3 terminal accept?","answer":"For stranded copper it accepts 300 kcmil minimum to 600 kcmil maximum. For stranded aluminum it accepts 300 kcmil minimum to 400 kcmil maximum."},{"question":"What torque should I use for the 3VA9771-0JJ53 connector?","answer":"For 300-400 kcmil stranded copper, torque to 600 lb-in. For 500-600 kcmil stranded copper, torque to 780 lb-in."},{"question":"Will 3VA9771-0JJ53 fit a 3VA58 or 3VA68 breaker?","answer":"Yes, this connector is specifically designed for 3-pole 3VA58 and 3VA68 circuit breakers."},{"question":"How do I get current pricing and availability for 3VA9771-0JJ53?","answer":"Submit an RFQ through this listing. Availability and pricing are confirmed at quote time through independent distribution channels."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/siemens/3VA9771-0JJ53","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/3VA9771-0JJ53 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}}