{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"FRN250AR1S-4U","brand":"Fuji Electric","brandSlug":"fuji-electric","productSlug":"FRN250AR1S-4U","canonicalUrl":"https://aoctrl.com/fuji-electric/FRN250AR1S-4U","factsUrl":"https://aoctrl.com/api/mcp/products/FRN250AR1S-4U","rawCanonicalId":null},"summary":{"shortDescription":"Fuji Electric FRENIC-HVAC series, FRN250AR1S-4U, 3-phase 460V 250HP UL Open Type VFD.","salesMarkdown":"## Drive selection memo — FRN250AR1S-4U The Fuji FRN250AR1S-4U is a FRENIC-HVAC series variable frequency drive rated for 250 HP on a 3-phase 460 V supply, in a UL open-type enclosure. This is the HVAC-optimized variant of the FRENIC family, meaning the firmware includes pre-loaded pump and fan macros, sleep/wake functions, and fire mode override — features a general-purpose drive would need custom programming to match. The 460 V class and 250 HP rating place it squarely in the mid-to-large commercial HVAC segment — think chiller compressors, cooling tower fans, and primary/secondary chilled water pumps. The UL open-type chassis means it's intended for panel mounting, not standalone wall mount; plan for adequate enclosure ventilation or a forced-air cooling plenum. The 250 HP rating at 460 V three-phase is the motor output capacity under typical HVAC load profiles (variable torque). That means it's sized for a 250 HP motor driving a centrifugal fan or pump — not a constant-torque conveyor or extruder. If the application is a positive-displacement load, the drive must be oversized by one frame; the FRENIC-HVAC firmware is not tuned for constant-torque starting. The UL open-type designation means the drive carries UL listing for the US market but lacks a NEMA 1 or 12 enclosure. It must be installed inside a UL-listed industrial control panel with appropriate short-circuit current rating (SCCR) coordination. The open-type rating also implies the heatsink is exposed — verify panel depth allows adequate airflow behind the drive.","metaTitle":"Fuji FRN250AR1S-4U FRENIC-HVAC Drive, 460V 250HP UL Open Typ","metaDescription":"Fuji FRN250AR1S-4U FRENIC-HVAC VFD, 3-phase 460V, 250HP, UL open type. Current lifecycle stage. Sourced to order against RFQ.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["AC Drive (VFD) 480V"],"specifications":{"lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":null,"priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/FRN250AR1S-4U/alternatives.json"},"ai":{"faq":[{"question":"What is the FRN250AR1S-4U's key rating?","answer":"It is a 250 HP, 3-phase 460 V variable frequency drive in the FRENIC-HVAC series, supplied as a UL open-type chassis for panel mounting."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/fuji-electric/FRN250AR1S-4U","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/fuji-electric/FRN250AR1S-4U 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}}