{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"ACS550-01-06A9-4","brand":"ABB","brandSlug":"abb","productSlug":"ACS550-01-06A9-4","canonicalUrl":"https://aoctrl.com/abb/ACS550-01-06A9-4","factsUrl":"https://aoctrl.com/api/mcp/products/ACS550-01-06A9-4","rawCanonicalId":null},"summary":{"shortDescription":"ABB ACS550-01-06A9-4 Frequency Inverter, 3-phase 380-480 VAC, 6.9/5.4 A, 3/2.2 kW, 0-500 Hz, R1 frame, IP21.","salesMarkdown":"The ABB ACS550-01-06A9-4 is a frequency inverter from the ACS550 family, a general-purpose VFD line known for straightforward commissioning and reliable motor control. This specific variant is rated for 6.9 A output current (heavy-duty) and 5.4 A (light-duty), corresponding to motor powers of 3 kW and 2.2 kW respectively on a 3-phase 380-480 VAC supply. The output frequency range spans 0 to 500 Hz, covering standard induction motors and higher-speed spindle applications within that power band. ## Sourcing reality — this drive is end-of-life For a line-down situation, the closest functional drop-in from the same series is the ACS550-U1-03A3-4. It shares the same R1 frame, voltage class, and IP21 rating, but check the current rating: the U1-03A3-4 is a lower-amperage variant (3.3 A heavy-duty). If your load demands the full 6.9 A, you'll need to move up to a larger frame or the ACS580 equivalent. No rewiring of the power terminals is needed between same-frame ACS550 variants — the terminal layout is identical. The dual current rating — 6.9 A heavy-duty / 5.4 A light-duty — is the key selection parameter. A 3 kW motor at 400 V drawing around 6.5 A full-load will run comfortably in HD mode. If your motor nameplate shows 5.2 A, you're in LD territory and could even oversize the drive slightly for headroom. The 0-500 Hz output frequency means this drive can run standard 50/60 Hz motors as well as higher-speed spindles up to 500 Hz, but the motor's mechanical limits (bearing speed rating, rotor balance) will be the constraint — not the drive. For a standard 4-pole induction motor at 50 Hz, you'd set the maximum frequency to 50 Hz and let the drive ramp up from there. The R1 frame accepts power wiring up to 4 mm² (AWG 12) for the input and motor terminals. Control wiring uses spring-cage terminals on the detachable I/O board — strip length 8 mm, wire size 0.5-2.5 mm². The standard I/O includes two analog inputs (0-10 V or 4-20 mA selectable), one analog output, six digital inputs, and two relay outputs. For fieldbus integration, the ACS550 accepts an optional module (Modbus RTU is standard on the RS-485 port; PROFIBUS or DeviceNet require an add-on card in the option slot).","metaTitle":"ABB ACS550-01-06A9-4 Frequency Inverter, 6.9 A, 3 kW, EOL","metaDescription":"ABB ACS550-01-06A9-4 frequency inverter, 3-phase 380-480 VAC, 6.9 A rated, 3/2.2 kW motor power, R1 frame, IP21. End-of-life status; sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 480V"],"specifications":{"Type":"Frequency Inverter","Model":"ACS550-01-06A9-4","Weight":"6,16 kg","Voltage":"3 phase/380 … 480 V AC","Condition":"Used","Frequency":"0 … 500 Hz","Shelf No.":"240620","Dimensions":"212 x 125 x 369 mm","Frame Size":"R1","Manufacture":"Abb","Motor Power":"3/2.2 Kw","Manufacturer":"ABB","Rated Current":"6.9 / 5.4 A","Dimensions [mm]":"212 x 125 x 369","Output: Voltage":"3 phase/0 … 380 … 480 V AC","Type of Product":"Frequency Inverter","lifecycle_stage":"eol_hot","Protection Class":"IP21"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,272.54","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/ACS550-01-06A9-4/alternatives.json"},"ai":{"faq":[{"question":"What replaces the ACS550-01-06A9-4?","answer":"ABB's official replacement series is the ACS580 general-purpose drive. The closest functional equivalent within the same ACS550 series is the ACS550-U1-03A3-4, but it has a lower current rating (3.3 A HD vs 6.9 A HD). For the same power rating, you would need to move to a larger frame in the ACS580 family."},{"question":"What are the key ratings of the ACS550-01-06A9-4?","answer":"It is a frequency inverter rated for 3-phase 380-480 VAC input, 6.9 A heavy-duty / 5.4 A light-duty output current, 3/2.2 kW motor power, 0-500 Hz output frequency, R1 frame size, and IP21 protection."},{"question":"Will the ACS550-01-06A9-4 drop into a panel wired for the ACS550-U1-03A3-4?","answer":"Yes, mechanically and electrically. Both are R1 frame drives with the same terminal layout and mounting footprint. The power wiring and control cabling are identical. The only difference is the current rating — the 06A9-4 is rated for higher output current (6.9 A HD vs 3.3 A HD), so ensure the upstream protection and motor cable are sized for the higher current."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/abb/ACS550-01-06A9-4","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/ACS550-01-06A9-4 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}}