{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS550-U1-157A-4+B055","brand":"ABB","brandSlug":"abb","productSlug":"ACS550-U1-157A-4~3B055","canonicalUrl":"https://aoctrl.com/abb/ACS550-U1-157A-4~3B055","factsUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-157A-4%2BB055","rawCanonicalId":null},"summary":{"shortDescription":"ABB ACS550-U1-157A-4+B055 ACS550 series motor drive, 157 A frame with +B055 option, listed weight 68.04 kgs.","salesMarkdown":"The ABB ACS550-U1-157A-4+B055 is a member of the ACS550 series general-purpose drive family, configured at the 157 A frame and ordered with the +B055 option suffix that ships from the ASEA BROWN BOVERI line under the ABB Drives catalog. The order code carries the ACS550-U1 series designation within ABB's motor drives line, positioned under the Motors & Motor Controls category as a Motor Drive. ## Sizing and what the +B055 suffix implies The +B055 option is added to the base ACS550-U1-157A-4 code, so a buyer comparing the two is looking at the same power frame with an extra factory-fit option bolted on — wiring, footprint, and current class are unchanged, but option-dependent features (commonly a braking chopper, line filter, or communication card on this platform) will differ between the two variants. ## Sourcing posture ACS550 series drives are specified into the BOM and quoted to order rather than pulled off a stocking shelf for a line-down event — the right move on a replacement order is an RFQ against the full order code including the +B055 option, so the factory ships a drive with the option fitted rather than a base unit that has to be field-modified.","metaTitle":"ABB ACS550-U1-157A-4+B055 Drive, 157A","metaDescription":"ABB ACS550-U1-157A-4+B055 ACS550 series drive, listed weight 68.04 kgs. Specified to RFQ for Motor Drives lines.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drives (VFD)"],"specifications":{"Part #":"ACS550-U1-157A-4+B055","Weight":"68.04 kgs","Category":"Drives","Sub Category":"Motor Drives","Top Category":"Motors & Motor Controls","lifecycle_stage":"eol_hot"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/ACS550-U1-157A-4%2BB055/alternatives.json"},"ai":{"faq":[{"question":"Will ACS550-U1-157A-4+B055 drop into a panel specified around ACS550-U1-157A-4 without rewiring?","answer":"Both codes sit on the same 157 A frame, so footprint and power wiring land in the same place. Option-specific control wiring, filter connections, or fieldbus card terminations tied to the +B055 option are the only points that need to be checked before a direct swap."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/ACS550-U1-157A-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-U1-157A-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}}