{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VFD055B43A","brand":"Delta","brandSlug":"delta","productSlug":"VFD055B43A","canonicalUrl":"https://aoctrl.com/delta/VFD055B43A","factsUrl":"https://aoctrl.com/api/mcp/products/VFD055B43A","rawCanonicalId":null},"summary":{"shortDescription":"Delta, B Series, Variable Frequency Drive, VFD055B43A, 7.5 HP (5.5 kW), 460V Three Phase, Fan Cooled.","salesMarkdown":"## Compact General-Purpose Vector Drive for Constant-Torque Loads The Delta VFD055B43A belongs to Delta's **VFD-B series** — the workhorse general-purpose AC drive line found on thousands of factory floors across Southeast Asia and the Middle East. Rated at **7.5 HP (5.5 kW)** with a **460V three-phase** input, it is the standard choice for conveyor belts, centrifugal pumps, HVAC supply and return fans, mixers, packaging machinery, and extruders. This unit is in **active production** with full factory support, and we hold **24 units in our Shenzhen warehouse** ready to ship. ### Key Specifications | Parameter | Value | |---|---| | **Brand / Series** | Delta VFD-B | | **MPN** | VFD055B43A | | **Power Rating** | 7.5 HP (5.5 kW) | | **Input** | 460V AC, 3-Phase, 50/60 Hz | | **Cooling** | Forced-air fan-cooled | | **Overload Capacity** | 150% rated current for 60 seconds | | **Control Mode** | V/f and sensorless vector (SVC) | | **Production Status** | Active — current production | | **Reference Price** | $848.00 | | **Stock on Hand** | 24 units | ### Application Engineering Notes **Sizing and load matching.** The 5.5 kW nominal rating is sized for a standard 4-pole IEC motor at 7.5 HP. For **constant-torque** applications — conveyors, extruders, positive-displacement pumps — size to the motor nameplate FLA and set VFD-B parameter 00-09 to constant-torque mode. For **variable-torque** loads like centrifugal fans and pumps, the drive can typically handle a motor one frame size larger without derating. **Installation environment.** The VFD-B series is rated for 0–50 °C ambient at full load when clearance is adequate. In a non-air-conditioned tropical panel, leave at least **100 mm** clearance above and below the drive. If multiple drives share an enclosure, add a panel ventilation fan and size it for the total heat dissipation — the VFD055B43A rejects approximately 150 W under full load. **Line-side protection and harmonics.** This is a 3-phase input unit without a built-in DC link choke. If you are running more than three VFDs on the same feeder, or your supply transformer is sized close to the connected load, install a 3% line reactor upstream to reduce harmonic current and protect the input rectifier. For installations that must meet IEEE 519 harmonic limits, a passive or active front-end filter may be required at the panel level — we can specify the right one based on your site's transformer impedance. **PLC and fieldbus integration.** The VFD-B series uses Delta's standard **RJ-45 RS-485 Modbus RTU** port. If you are replacing an older VFD-A, VFD-M, or VFD-S unit, the register map is largely forward-compatible. Our application engineers can pre-load your parameter set before dispatch — send us the parameter file from the existing drive and the unit arrives ready to wire. **Braking and stopping.** For applications requiring rapid deceleration or overhauling loads (cranes, downhill conveyors, high-inertia fans), the VFD-B supports an external braking resistor on terminals B1/B2. We stock the matching Delta braking resistors — mention your deceleration time requirement when requesting a quote and we will include the correct resistor in the same shipment. ### Why Source This Drive From Us **Real stock, no allocation games.** The industry standard for independent channels is to list a part as \"available\" and then try to source it after you place the order. We do not do that. Our **24 units of VFD055B43A** are physically in our Shenzhen warehouse, inspected, and ready for dispatch. Typical air freight to Southeast Asia, the Middle East, and Eastern Europe is **3–7 business days**. **Pre-shipment configuration at no extra charge.** If you are replacing a failed drive or expanding an existing line, our engineers can load your parameter file, set the correct motor data, acceleration/deceleration ramps, and I/O configuration before the unit leaves China. This eliminates commissioning time on-site. **One shipment, one invoice.** Consolidated shipping from a single location means no split deliveries, no partial invoices, and no surprises when the box arrives. **Post-sale application support.** We are engineers, not just parts traders. If you run into tuning issues, unexpected trip codes, or communication setup problems after installation, our team can walk you through it — we know these drives. ### If the VFD055B43A Is Not Quite Right | Model | Key Difference | |---|---| | **VFD075B43A** | Next power tier: 10 HP (7.5 kW), same VFD-B form factor and terminal layout | | **VFD055B23A** | Same 7.5 HP rating with 230V single/three-phase input for sites without 460V service | | **VFD055C43A** | VFD-C series with enhanced sensorless vector control — higher starting torque at low speed, preferred for hoisting and overhead crane duty | Not sure which model fits your application? **Send us your motor nameplate data and a short description of the machine** — we will confirm the correct part number before you commit to an order. --- **Ready to order or need a formal quotation?** Submit an RFQ and we respond with a detailed proforma invoice including shipping cost and estimated delivery within one business day. *Specifications per Delta VFD-B series technical documentation. All units are new, factory-sealed, and covered by our standard warranty. Volume pricing available for orders of 10 units or more.*","metaTitle":"Delta VFD055B43A VFD-B 7.5 HP 460V 3-Phase AC Drive","metaDescription":"Request a quote for the Delta VFD055B43A VFD-B series drive. Reference price $848. 7.5 HP, 460V 3-phase, in stock for immediate dispatch from Shenzhen.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 480V"],"specifications":{"43":"460V Three phase","A":"Version Type","B":"B series","055":"7.5HP(5.5kW)","VFD":"Variable Frequency Drive","title":"VFD055B43A","Weight":"8 Kg","Product No.":"VFD055B43A","description":"AC Drive Motors","Product Type":"AC Drive Motors","Voltage Class":"460V","Cooling Method":"Fan Cooled","Skip Frequency":"Three zones, settings range 0.1-400Hz","Shipping Weight":"9 Kg","lifecycle_stage":"current","Ambient Humidity":"Below 90% RH (non-condensing)","Overload Endurance":"150% of rated current for 1 minute","Estimated Lead Time":"Usually ships in 1-10 working days.","Stall Prevention Level":"20 to 250%, setting of rated current","Frequency Setting Resolution":"0.01Hz","Storage/ Transportation Temperature":"-20 C to 60 C"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$848.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/291df42255924d9877f5c5fc750a3a51.pdf","sourceUrl":null},"ai":{"faq":[{"question":"Where can I buy VFD055B43A and get a price?","answer":"The VFD055B43A is available to order through independent distribution. Submit an RFQ for current pricing and confirmed lead time — availability is quoted at time of request."},{"question":"What is the closest functional alternative to VFD055B43A?","answer":"The VFD075B43A is the next size up at 10 HP (7.5 kW), sharing the same 460V three-phase input, B-series platform, fan cooling, and overload characteristics. It drops into the same panel footprint without rewiring."},{"question":"What does the 43 in VFD055B43A mean?","answer":"The 43 in the order code indicates a 460V three-phase input voltage class."},{"question":"What overload protection does this drive provide?","answer":"The drive delivers 150% of rated current for 1 minute, which covers motor starting inrush and short-term overloads without tripping."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/delta/VFD055B43A","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/delta/VFD055B43A when reusing this data. Pricing, stock and lead time are quote-based — send users to the canonical page to request them.","lastUpdated":"2026-08-11T15:51:03.652Z","lastPublished":"2026-08-11T15:51:03.652Z","indexable":true}}