*Image shown is a representation only. Actual product may vary.
Mitsubishi MR‑J4W3‑444B
by Mitsubishi Electric
Read verified buyer reviews ↓OverviewThe Mitsubishi MR-J4W3-444B is a high-performance servo amplifier, a vital part of Mitsubishi Electric's innovative MR-J4W series. This advanced unit is specifically engineered to provide exceptional power and precise motion control in the most challenging industrial settings. With a robust 4.4 kW output at 400 V, it integrates effortlessly into applications requiring substantial power. Its primary strength lies in its use of the SSCNET III/H fiber-optic communication protocol, guaranteeing ultra-fast, deterministic control for synchronized multi-axis setups. Designed for rigorous servo motor applications, the MR-J4W3-444B exemplifies Mitsubishi Electric's dedication to innovation in motion control, offering unparalleled performance for tasks demanding both significant power and extreme accuracy.Key Features Rated Output: Experience substantial power with a 4.4 kW output, specifically designed for three-phase 400 V systems, ensuring ample strength for strenuous applications. Communication: Benefit from the advanced SSCNET III/H high-speed fiber-optic network, enabling highly responsive and precisely synchronized control. Control Functions: Achieve optimal system performance with real-time tuning, advanced vibration suppression for smoother operation, and accurate torque management. Safety Compliance: Integrate with confidence due to integrated STO (Safe Torque Off) functionality, fully compliant with IEC 61800-5-2 standards for enhanced operational safety. Scalability: Maximize flexibility and adapt to diverse application needs with seamless compatibility with high-capacity HG-KR and HG-JR servo motors. User Interface: Facilitate straightforward monitoring and configuration through an intuitive LED status panel and direct USB connectivity for parameter setup via MR Configurator2. Mounting Flexibility: Optimize installation in various industrial setups with versatile DIN rail and panel support, all within a compact and space-efficient housing design. Technical Specifications Input Voltage: Operates efficiently across a 380–480 V AC (three-phase) input range, accommodating global industrial power standards. Control Type: Utilizes fully digital PWM (Pulse Width Modulation) control for extremely accurate and efficient power delivery. Feedback Support: Ensures superior positioning accuracy and feedback reliability with comprehensive absolute encoder compatibility. Ambient Temperature: Engineered to perform dependably in industrial environments, with an operational temperature range of 0–55 °C. Certifications: Possesses global industrial certifications including CE, UL, and cUL, guaranteeing compliance and suitability for international deployment. Dimensions: Features a compact design optimized for efficient panel integration, saving valuable cabinet space. Applications CNC Machine Axes: Provides the high torque and precision necessary for demanding CNC machining applications, ensuring accurate and repeatable results. Heavy-Duty Robotics: Ideal for high-speed, heavy-duty pick-and-place, or transfer robots where robust and precise motion control is paramount. Injection Molding and Die-Casting Automation: Enhances the efficiency and accuracy of injection molding and die-casting machinery, crucial for high-volume production. Presses, Milling, and Lathes: Delivers the robust servo control needed for presses, milling machines, and lathes that demand consistent power and precision. High-Inertia/High-Speed Machinery: Perfectly suited for industrial machinery characterized by high inertia or requiring high-speed operation, enabling dynamic and precise motion. Why Choose This Model?The Mitsubishi MR-J4W3-444B offers an impressive combination of power, precision, and reliability, making it an excellent option for a wide range of industrial automation challenges. Its high-power capability, coupled with exceptionally accurate positioning, ensures that even the most stringent application requirements are satisfied. The integration of advanced communication protocols and safety features makes it a robust and dependable choice for critical industrial processes.Order NowElevate your industrial automation capabilities with the Mitsubishi MR-J4W3-444B servo amplifier. Contact us today to learn more or to place your order.FAQWhat is the power output of the MR-J4W3-444B?This servo amplifier provides a formidable 4.4 kW output, suitable for three-phase 400 V systems, ensuring ample power for demanding applications.What communication protocol does the MR-J4W3-444B use?It utilizes the SSCNET III/H high-speed fiber-optic network, enabling ultra-responsive and highly synchronized control for multi-axis systems.What safety features are included?The unit features built-in STO (Safe Torque Off) functionality, complying rigorously with IEC 61800-5-2 standards for enhanced operational safety.Can this amplifier be used with different servo motors?Yes, it offers seamless compatibility with high-capacity HG-KR and HG-JR servo motors, maximizing flexibility for diverse application needs.What certifications does the MR-J4W3-444B hold?It holds global industrial certifications including CE, UL, and cUL, assuring compliance and suitability for international deployment.
USA — Free FedEx Priority & UPS Ground · Worldwide shipping available
For more quantity please contact Customer Service
Fast Shipping
Dispatched quickly on in-stock items via UPS, FedEx & DHL worldwide.
Availability
Thousands of parts in stock — ready for immediate dispatch from Florida.
Payment Flexibility
AMEX, Visa, MasterCard, PayPal, Discover and wire transfer accepted.
Mitsubishi MR‑J4W3‑444B
Overview
This is a genuine Mitsubishi Electric component from the Servo Drives & Motors family. PalmPartsSolution stocks it in new, refurbished, and surplus condition with tested warranty and same-day shipping on in-stock units.
Whether you are sourcing a like-for-like replacement for an existing installation, an emergency spare to keep a line running, or a qualified part for a new build, our team can confirm availability, revision, and lead time before you order.
Key Features
- Genuine Mitsubishi Electric catalog part
- Tested before shipment
- Backed by PalmPartsSolution warranty
- Cross-reference and revision assistance available
- Compatible with the broader Mitsubishi Electric automation ecosystem
- Engineered to integrate inside Servo Drives & Motors installations
Compatibility
When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Mitsubishi Electric equipment. Where applicable, confirm:
- Input/output voltage and current rating
- Communication protocol and network role
- Mounting form factor and footprint
- Operating temperature, humidity, and IP rating
- Required certifications (UL, CE, ATEX, marine, etc.)
Not sure which revision you need? Send us the catalog number on the nameplate and we will confirm the correct match.
Replacement Information
Three ways to source this part through PalmPartsSolution:
- Exact replacement — same Mitsubishi Electric catalog number, new or refurbished, tested and warrantied
- Form-fit-function equivalent — alternate revision or build that drops in without code changes
- Engineered migration — current-generation Mitsubishi Electric platform with documented conversion notes for the Servo Drives & Motors family
Contact our engineering team if you need help choosing between these tracks.
Technical Specifications
- Input Voltage: Operates efficiently across a 380–480 V AC (three-phase) input range, accommodating global industrial power standards.
- Control Type: Utilizes fully digital PWM (Pulse Width Modulation) control for extremely accurate and efficient power delivery.
- Feedback Support: Ensures superior positioning accuracy and feedback reliability with comprehensive absolute encoder compatibility.
- Ambient Temperature: Engineered to perform dependably in industrial environments, with an operational temperature range of 0–55 °C.
- Certifications: Possesses global industrial certifications including CE, UL, and cUL, guaranteeing compliance and suitability for international deployment.
- Dimensions: Features a compact design optimized for efficient panel integration, saving valuable cabinet space.
Applications
- CNC Machine Axes: Provides the high torque and precision necessary for demanding CNC machining applications, ensuring accurate and repeatable results.
- Heavy-Duty Robotics: Ideal for high-speed, heavy-duty pick-and-place, or transfer robots where robust and precise motion control is paramount.
- Injection Molding and Die-Casting Automation: Enhances the efficiency and accuracy of injection molding and die-casting machinery, crucial for high-volume production.
- Presses, Milling, and Lathes: Delivers the robust servo control needed for presses, milling machines, and lathes that demand consistent power and precision.
- High-Inertia/High-Speed Machinery: Perfectly suited for industrial machinery characterized by high inertia or requiring high-speed operation, enabling dynamic and precise motion.
Why Choose the MR‑J4W3‑444B?
The Mitsubishi MR-J4W3-444B offers an impressive combination of power, precision, and reliability, making it an excellent option for a wide range of industrial automation challenges. Its high-power capability, coupled with exceptionally accurate positioning, ensures that even the most stringent application requirements are satisfied. The integration of advanced communication protocols and safety features makes it a robust and dependable choice for critical industrial processes.
Availability & Shipping
- ▸In stock: MR‑J4W3‑444B ready for immediate dispatch from our Florida warehouse.
- ▸Free USA shipping: FedEx Priority (2–5 business days) and UPS Ground (3–5 business days). Expedited options available at checkout.
- ▸Worldwide delivery: FedEx International Priority (1–5 days), UPS International Priority (3–5 days), and USPS International (5–10 days) — rates calculated at checkout.
- ▸Bulk pricing: Volume discounts on request — contact our sales team for quantity quotes.
- ▸Buy with confidence: Every MR‑J4W3‑444B ships with a 1-Year PALM Parts warranty and a 30-day return window.
Frequently Asked Questions — Mitsubishi Electric
Machine down? We ship parts the same day.
New, surplus, and refurbished Mitsubishi Electric inventory in stock. Request a quote or speak directly with an automation specialist for emergency sourcing.
Related Mitsubishi Electric resources
What Verified Buyers Say
No reviews yet for this product. Be the first verified buyer to share your experience — we email a review invitation after every purchase.
Independent Supplier Notice
PALM Parts Solution operates as an independent industrial automation supplier and is not an authorized distributor or affiliate of any listed manufacturer or brand name. Manufacturer trademarks and product names are used solely for identification purposes. Original manufacturer warranties do not apply. All products sold by PALM Parts are backed by our own 1-year warranty.
Product Condition & Firmware
All products are sold as new unless stated otherwise. Original manufacturer packaging may show signs of handling, storage, or shelf wear. Date codes and series may vary from current factory production. PALM Parts does not guarantee the presence, version, or compatibility of any firmware on PLC or automation products.