{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS550-U1-078A-4+V944","brand":"ABB","brandSlug":"abb","productSlug":"ACS550-U1-078A-4~3V944","canonicalUrl":"https://aoctrl.com/abb/ACS550-U1-078A-4~3V944","factsUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-078A-4%2BV944","rawCanonicalId":null},"summary":{"shortDescription":"ABB ACS550-U1-078A-4+V944, ACS550-U1 series AC drive, 22.68 kg, in the Motor Drives line.","salesMarkdown":"The ABB ACS550-U1-078A-4+V944 is an AC drive from the ACS550-U1 series, listed at 22.68 kg and catalogued as a Motor Drive in the ABB drives line. The \"+V944\" suffix rides on the standard U1 frame, so the mechanical footprint and lifting points match the rest of the U1 family — handle accordingly when you hang it on the back panel. ## What the ratings govern For a drive this heavy the 22.68 kg figure drives handling rather than selection — two-person lift, cabinet reinforcement where the original BOM didn't call for it, and a check that the gland plate layout still leaves room for the line/motor cables to land without bending radius violations. ## Where this class sits ACS550-U1 drives cover the general-purpose industrial VFD slot — fans, pumps, conveyors, mixers — where the standard ABB macro set and the on-board PID are enough to commission without a separate controller. The +V944 option code is an ABB factory-fit extension on top of the base U1 drive, so panel builders should treat it as a configured SKU rather than a clean-slate part when specifying spares.","metaTitle":"ABB ACS550-U1-078A-4+V944 AC Drive, 22.68 kg","metaDescription":"ABB ACS550-U1-078A-4+V944 AC drive in the ACS550-U1 frame at 22.68 kg. Sourced to order against an RFQ for ABB Motor Drives lines.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drives (VFD)"],"specifications":{"Part #":"ACS550-U1-078A-4+V944","Weight":"22.68 kgs","Category":"Drives","Sub Category":"Motor Drives","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$10,295.98","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-078A-4%2BV944/alternatives.json"},"ai":{"faq":[{"question":"Will the ACS550-U1-078A-4+V944 drop into a panel specified around the ACS550-U1-096A-4 without rewiring?","answer":"No. The 096A carries a higher amp rating; cable sizing, breaker coordination, and the drive's thermal derating must all be re-checked before either direction of swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/ACS550-U1-078A-4~3V944","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-U1-078A-4~3V944 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}}