{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"VFD037M21A","brand":"Delta","brandSlug":"delta","productSlug":"VFD037M21A","canonicalUrl":"https://aoctrl.com/delta/VFD037M21A","factsUrl":"https://aoctrl.com/api/mcp/products/VFD037M21A","rawCanonicalId":null},"summary":{"shortDescription":"Delta VFD-M Series, General Sensorless Vector Control Micro Drive, VFD037M21A, 3.7 kW (5 HP), 230V single-phase input, 10 A output, 0.1–400 Hz.","salesMarkdown":"The Delta VFD037M21A is a VFD-M series micro drive rated for 3.7 kW (5 HP) motor capacity on a 230V single-phase supply. Its 10 A continuous output and 3.8 kVA capacity mean it handles a standard 3.7 kW induction motor at full load without derating — sized for pumps, fans, and light conveyors in a 200–240 VAC line. The 0.1–400 Hz output range with 1–15 kHz carrier frequency gives you headroom for high-speed spindle applications or quiet operation at lower carrier settings. ## Input power configuration — single-phase feed, three-phase motor This drive accepts single-phase 200–240 VAC input (rated 11.5 A single-phase, 7.6 A when fed from a three-phase source). The input current for 1-phase models when using 3-phase power is 27 A — that's the inrush or transient figure, not the continuous draw. Voltage tolerance is ±10% (180–264 VAC), frequency tolerance ±5% (47–63 Hz). Fan-cooled, so ensure clearance around the heatsink fins in the panel.","metaTitle":"Delta VFD037M21A VFD-M Micro Drive, 3.7 kW / 5 HP, 230V 1-Ph","metaDescription":"Delta VFD037M21A VFD-M series micro drive. 3.7 kW / 5 HP, 230V single-phase input, 10 A output. Sensorless vector control. Current production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 240V"],"specifications":{"title":"VFD037M21A","Weight":"3.2 kg","Product no":"VFD037M21A","description":"General Sensorless Vector Control Micro Drives VFD-M Series","Input Rating":"Rated Input Current : Single/3-phase , 11.5/7.6Input Current for 1-phase Models when Using 3-phase Power : 27Rated Voltage, Frequency : Single/3-phase 200-240 VAC, 50/60HzVoltage Tolerance : ± 10% (180~264 VAC)Frequency Tolerance : ± 5% (47~63 Hz)","Product type":"General Sensorless Vector Control Micro Drives VFD-M Series","Version Type":"A","Input Voltage":"21 - Single phase 230V","Output Rating":"Rated Output Capacity (kVA) : 3.8Rated Output Current (A) : 10Maximum Output Voltage (V) : 3-phase Proportional to Input VoltageOutput Frequency (Hz) : 0.1~400 HzCarrier Frequency (kHz) : 1-15","Voltage Class":"230V Class","Cooling Method":"Fan Cooled","Shipping Weight":"5 Kg","lifecycle_stage":"current","Voltage Tolerance":"± 10% (180~264 VAC)","Estimated Lead Time":"Usually ships in 1-10 working days.","Frequency Tolerance":"± 5% (47~63 Hz)","Rated Input Current":"Single/3-phase , 11.5/7.6","Output Frequency (Hz)":"0.1~400 Hz","Carrier Frequency (kHz)":"1-15","Rated Output Current (A)":"10","Rated Voltage, Frequency":"Single/3-phase 200-240 VAC, 50/60Hz","Applicable motor capacity":"037: 5 HP(3.7kW)","Maximum Output Voltage (V)":"3-phase Proportional to Input Voltage","Rated Output Capacity (kVA)":"3.8","Max. Applicable Motor Output (hp)":"3.0","Max. Applicable Motor Output (kW)":"2.2","Input Current for 1-phase Models when Using 3-phase Power":"27"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$563.00","stockQuantity":0,"priceTiers":null},"links":{"datasheetUrl":"https://cdn.aoctrl.com/8907f7e547d09cbac1904d962d695ea6.pdf","sourceUrl":null},"ai":{"faq":[{"question":"What is the closest functional second-source to VFD037M21A?","answer":"The VFD110B23B is a peer in the same VFD series but a different version (B vs A) and takes three-phase 230V input rather than single-phase. It is not a direct electrical swap without rewiring the supply."},{"question":"How do I get current pricing and availability for VFD037M21A?","answer":"Sourced to order against an RFQ through independent distribution. Availability and current pricing are confirmed at quote time."},{"question":"Will VFD037M21A drop into a panel specified around VFD110B23B without rewiring?","answer":"No — VFD110B23B requires three-phase 230V input, while VFD037M21A runs on single-phase 230V. The power wiring differs; the mechanical footprint may match, but the supply circuit must be reconfigured."},{"question":"What compliance documentation does Delta provide for VFD037M21A?","answer":"The VFD-M series carries CE marking as standard. Specific RoHS, REACH, and UL documentation is available on request — confirm at order time for your jurisdiction."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"icboms-matrix-langgraph","citationUrl":"https://aoctrl.com/delta/VFD037M21A","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/VFD037M21A 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}}