{"schemaVersion":"matrix-product-facts/v1","identity":{"mpn":"MR-J4-200A4-RJ","brand":"Mitsubishi Electric","brandSlug":"mitsubishi","productSlug":"MR-J4-200A4-RJ","canonicalUrl":"https://aoctrl.com/mitsubishi/MR-J4-200A4-RJ","factsUrl":"https://aoctrl.com/api/mcp/products/MR-J4-200A4-RJ","rawCanonicalId":null},"summary":{"shortDescription":"Mitsubishi MR-J4-200A4-RJ servo amplifier, 2 kW rated output, 3-phase 400 VAC input, full closed-loop control, general-purpose interface.","salesMarkdown":"The Mitsubishi MR-J4-200A4-RJ is a servo amplifier from the MR-J4 series, rated for 2 kW continuous output on a 3-phase 400 VAC supply. It runs full closed-loop control, meaning the drive continuously compares the encoder feedback against the commanded position and corrects in real time — no position drift under load. This is the kind of loop you spec for a tool changer or a feed axis where the motor has to hold position against cutting forces or a heavy carriage. The interface is marked general-purpose, so it accepts standard step/direction or analog torque/speed commands from a PLC or motion controller — no proprietary fieldbus card required for basic positioning. At 2 kW output and 400 VAC three-phase input, it drives a servo motor in that power band without a step-down transformer. ## Where you'd see this in a plant In a mineral processing or mining environment, this amplifier would live inside a climate-controlled MCC or drive cabinet, not out on the grizzly. The 2 kW rating suits a moderate-load axis — a conveyor transfer gate, a flotation cell reagent pump, or a crusher feed roll. Full closed-loop control means the drive compensates for belt stretch or gearbox backlash; if the encoder sees the load lagging, it adds torque to close the gap. That matters when a jammed rock on a feed belt would otherwise push the position error past the trip limit.","metaTitle":"Mitsubishi MR-J4-200A4-RJ Servo Amplifier, 2 kW, 3-Phase 400","metaDescription":"MR-J4-200A4-RJ servo amplifier by Mitsubishi, rated 2 kW output, 3-phase 400 VAC supply, full closed-loop control. Active production. Sourced to order.","metaKeywords":null},"attributes":{"series":null,"packageCase":null,"mountingType":null,"rohsStatus":null,"productStatus":null,"categoryPath":["Servo Drives"],"specifications":{"Part #":"MR-J4-200A4-RJ","Weight":"2.27 kgs","Category":"Drives","Interface":"GENERAL PURPOSE","Power Supply":"3 PHASE, 400 VAC","Rated Output":"2 KW OUTPUT","Special Spec":"FULL CLOSED LOOP CONTROL","Sub Category":"Servo Drives & Controls","Top Category":"Motors & Motor Controls","lifecycle_stage":"current"}},"commercial":{"minOrderQty":null,"leadTime":null,"referencePrice":"$1,305.56","priceTiers":null},"links":{"datasheetUrl":null,"sourceUrl":null,"alternativesUrl":"https://aoctrl.com/api/mcp/products/MR-J4-200A4-RJ/alternatives.json"},"ai":{"faq":[{"question":"What are the key electrical ratings for this servo amplifier?","answer":"Rated output is 2 kW, supplied from a 3-phase 400 VAC line. It runs full closed-loop control for precise position regulation."}],"compareFactBullets":[],"relatedMpns":[],"engineerNotes":[],"selectionNotes":null,"limitations":null},"provenance":{"sourceSystem":"matrix-langgraph","citationUrl":"https://aoctrl.com/mitsubishi/MR-J4-200A4-RJ","citationPolicyUrl":"https://aoctrl.com/llms.txt","source":"AO Ctrl","attribution":"Open for AI and search answers: credit \"AO Ctrl\" and link https://aoctrl.com/mitsubishi/MR-J4-200A4-RJ 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}}