{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS550-U1-077A-4","brand":"ABB","brandSlug":"abb","productSlug":"ACS550-U1-077A-4","canonicalUrl":"https://aoctrl.com/abb/ACS550-U1-077A-4","factsUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-077A-4","rawCanonicalId":null},"summary":{"shortDescription":"ABB ACS550-U1-077A-4 AC drive, ACS550 series, 400V class, listed at 29.03 kg unit weight.","salesMarkdown":"## What the order code calls for ACS550-U1-077A-4 is an AC drive in the ACS550 series, listed by ASEA BROWN BOVERI as an AC DRIVE at 29.03 kg unit weight. ## Why the 29.03 kg figure actually matters here On a small DIN-mounted drive weight is trivia; on an ACS550 frame it is not. At 29.03 kg the unit needs a real cabinet backplate or swing-frame mount, and any field-service swap is a two-person lift with a hoist or panel-extraction tray. Watch that figure against the door swing and the gland-plate cable bend radius — a heavier drive in a tighter cabinet is the recipe for a strained cable gland the first time the door opens after commissioning. ## Sourcing posture for this code No lifecycle status entry sits on this seed code, so production state is not asserted one way or the other. The two option-suffixed siblings on file (ACS550-U1-072A-4+B055+L512 at 34.02 kg, ACS550-U1-059A-4+B055 at 36.29 kg) carry factory-fit option codes and are configured variants, not drop-in alternates for a base U1-077A-4.","metaTitle":"ABB ACS550-U1-077A-4 AC Drive, 29.03 kg","metaDescription":"ABB ACS550-U1-077A-4 ACS550 series AC drive, listed at 29.03 kg. Specified to order against an RFQ — no per-unit quote, no live stock figure.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 480V"],"specifications":{"Part #":"ACS550-U1-077A-4","Weight":"29.03 kgs","Category":"Drives","Sub Category":"Motor Drives","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10,317.66","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-077A-4/alternatives.json"},"ai":{"faq":[{"question":"Is ACS550-U1-072A-4+B055+L512 a drop-in second source for ACS550-U1-077A-4?","answer":"No. ACS550-U1-072A-4+B055+L512 carries factory option codes (+B055, +L512) and weighs 34.02 kg. It is a configured ACS550 variant, not a cross-shop equivalent for the base U1-077A-4 — wiring, footprint, and option map all need to be re-verified before any panel cut."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/ACS550-U1-077A-4","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/abb/ACS550-U1-077A-4 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}}