{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS550-U1-08A8-4+B055","brand":"ABB","brandSlug":"abb","productSlug":"ACS550-U1-08A8-4~3B055","canonicalUrl":"https://aoctrl.com/abb/ACS550-U1-08A8-4~3B055","factsUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-08A8-4%2BB055","rawCanonicalId":null},"summary":{"shortDescription":"ABB ACS550 series motor drive, wall-mount ACS550-U1-08A8-4+B055 with +B055 factory option, listing 5.44 kgs in the ACS550 family of general-purpose drives.","salesMarkdown":"## What you're holding The ABB ACS550-U1-08A8-4+B055 is catalogued under the ACS550 series as a motor drive within the Drives category of Motors & Motor Controls, with the +B055 factory option suffix appended to the base order code. The chassis tips the bench scale at 5.44 kgs, which keeps it a one-person carry into a wall-mount cabinet and leaves the door-hinge moment well clear of what a larger frame would impose. For the wireman, that mass says wall-mount with the standard ABB footprint, not a through-panel bulkhead cut — the drill template for the 08A8 frame is what the panel drawings should call out. ## Where the ACS550 class earns its keep ACS550-family drives are the workhorse variable-frequency units most panels call out for fan, pump, conveyor and HVAC motor control where the load is roughly quadratic and the duty cycle is steady rather than dynamic. A general-purpose drive in this frame class typically lands on the line side of a motor starter lineup, runs scalar V/Hz by default and steps into vector modes only when the application asks for it. ## Frame-class reality check On the successor-platform side, ABB's ACH580 family carries the equivalent mid-range role in the current catalog: ACH580-01-014A-4 and ACH580-01-023A-4 both list 6.80 kgs. If the question is what replaces an ACS550 in a greenfield spec, that is the family the modern catalog points at — but the ACH580 is a different order code, a different firmware lineage, and a different commissioning tool, not a parameter-for-parameter swap. ## Sourcing posture ACS550-U1-08A8-4+B055 is specified into the BOM as a named ABB drive with the +B055 option intact on the order code.","metaTitle":"ABB ACS550-U1-08A8-4+B055 Motor Drive, 5.44 kgs","metaDescription":"ABB ACS550-U1-08A8-4+B055 ACS550 series motor drive, 5.44 kgs. Specified into the BOM and quoted to order against an RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drives (VFD)"],"specifications":{"Part #":"ACS550-U1-08A8-4+B055","Weight":"5.44 kgs","Category":"Drives","Sub Category":"Motor Drives","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$2,763.62","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-08A8-4%2BB055/alternatives.json"},"ai":{"faq":[{"question":"Can ACS550-U1-08A8-4+B055 drop into a panel built around ACS550-U1-096A-4?","answer":"No — they are different current classes. The 096A frame lists 19.96 kgs against 5.44 kgs for the 08A8 unit, which is a different chassis, footprint, motor sizing and supply wiring gauge, not a same-cutout swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/ACS550-U1-08A8-4~3B055","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-U1-08A8-4~3B055 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}}