Free Shipping Across the USA — Worldwide Delivery Available!
PALM Parts Solution
AccountQuote
In Stock Fast Shipping Available
Mitsubishi MR-J4-20B Servo Amplifier for industrial automation

*Image shown is a representation only. Actual product may vary.

Mitsubishi MR-J4-20B

by Mitsubishi Electric

Read verified buyer reviews ↓

OverviewEnhance your industrial operations with the Mitsubishi MR-J4-20B AC servo amplifier, delivering 200W of power for outstanding accuracy and rapid responsiveness. A key component of the esteemed MELSERVO MR-J4 series, this amplifier is built to satisfy the rigorous requirements of contemporary manufacturing and robotics. Its compact footprint offers powerful capabilities, making it an excellent choice for integration into control systems where space is limited, without sacrificing performance. The MR-J4-20B incorporates an SSCNET III/H optical communication interface, facilitating extremely fast and noise-resistant data exchange. This advanced communication protocol is essential for maintaining real-time control and synchronization in intricate multi-axis setups, providing a stable foundation for your crucial industrial tasks. Achieve superior motion management that establishes new benchmarks for efficiency and accuracy.Key Features Output Power: Provides a robust 200W, offering ample power for various precision motion control needs. Input Voltage: Operates efficiently on 200–240V AC, 3-phase power supply, ensuring compatibility with standard industrial electrical systems. Control Interface: Features the advanced SSCNET III/H (high-speed optical network), enabling ultra-fast, noise-immune communication for critical applications. Rapid Response: Boasts an impressive frequency response of up to 2.5 kHz, allowing for dynamic and precise control even in rapidly changing operational conditions. Safety Functions: Integrated STO (Safe Torque Off) functionality provides essential safety compliance, ensuring the machinery can be brought to a safe state when necessary. Auto-Tuning: Utilizes real-time adaptive tuning algorithms to automatically optimize motor performance, reducing setup time and maximizing operational efficiency. Compact Size: Engineered for space efficiency, its compact design facilitates easy integration into dense control panels, saving valuable cabinet space. Technical Specifications Model: MR-J4-20B Series: MELSERVO MR-J4 Rated Output Current: Approximately 1.3A, optimized for stable and efficient power delivery. Max Speed: Supports motor speeds up to 6000 RPM (revolutions per minute), depending on the connected motor specifications. Mounting: Designed for convenient panel mounting, ensuring secure and straightforward installation within industrial enclosures. Compatible Motors: Fully compatible with Mitsubishi's high-performance HG-KR and HG-MR series motors, ensuring seamless integration and optimal system synergy. Operating Temperature: Built to operate reliably in industrial environments, with a temperature range of 0°C to 55°C. Weight: Lightweight at approximately 1.3 kg (2.87 lbs), simplifying handling and installation. Certifications: Complies with international standards including CE, UL, and RoHS, guaranteeing quality, safety, and environmental responsibility. ApplicationsThe Mitsubishi MR-J4-20B Servo Amplifier is a versatile solution, perfectly suited for a diverse array of demanding industrial applications requiring high-speed, high-precision motion control: Advanced Robotics: Provides the agility and accuracy needed for sophisticated robotic arms and automated assembly systems. Packaging and Labeling: Ensures precise material handling and rapid indexing for efficient and consistent production lines. Semiconductor Manufacturing: Meets the stringent requirements for ultra-fine positioning and repeatable movements in delicate semiconductor processes. Material Handling: Powers conveyor systems, sorters, and automated guided vehicles (AGVs) with reliable and controlled motion. Compact Precision Equipment: Ideal for integration into smaller, high-accuracy machinery where space is at a premium but performance cannot be compromised. Why ChooseChoosing the Mitsubishi MR-J4-20B means investing in superior motion control technology. Its integration of advanced communication, robust safety features, and compact design positions it as a leading choice for optimizing industrial automation systems.Order NowEnhance your operations by integrating the Mitsubishi MR-J4-20B servo amplifier. Contact us today for pricing and availability to advance your industrial automation capabilities.FAQWhat is the primary function of the Mitsubishi MR-J4-20B?The MR-J4-20B is a high-performance AC servo amplifier designed for precise motion control in industrial automation and robotics, offering exceptional speed and accuracy.What communication interface does this amplifier utilize?It features an integrated SSCNET III/H optical communication interface, ensuring fast, noise-resistant data transfer for real-time control.What is the maximum output power of the MR-J4-20B?The amplifier delivers a rated output power of 200W.Is the MR-J4-20B compatible with existing Mitsubishi motors?Yes, it is fully compatible with Mitsubishi's HG-KR and HG-MR series motors.What safety features are included with this servo amplifier?It includes integrated STO (Safe Torque Off) functionality for essential safety compliance.

🇺🇸 Ships from our Florida warehouse
1-Year PALM Parts Warranty
CONDITION
$318.99
20 in stock

USA — Free FedEx Priority & UPS Ground · Worldwide shipping available

For more quantity please contact Customer Service

Experts Available 24/7 · 365
+1 (689) 263-1985
sales@palmpartssolution.com

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.

PRODUCT DETAILS

Mitsubishi MR-J4-20B

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:

  1. Exact replacement — same Mitsubishi Electric catalog number, new or refurbished, tested and warrantied
  2. Form-fit-function equivalent — alternate revision or build that drops in without code changes
  3. 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

  • Model: MR-J4-20B
  • Series: MELSERVO MR-J4
  • Rated Output Current: Approximately 1.3A, optimized for stable and efficient power delivery.
  • Max Speed: Supports motor speeds up to 6000 RPM (revolutions per minute), depending on the connected motor specifications.
  • Mounting: Designed for convenient panel mounting, ensuring secure and straightforward installation within industrial enclosures.
  • Compatible Motors: Fully compatible with Mitsubishi's high-performance HG-KR and HG-MR series motors, ensuring seamless integration and optimal system synergy.
  • Operating Temperature: Built to operate reliably in industrial environments, with a temperature range of 0°C to 55°C.
  • Weight: Lightweight at approximately 1.3 kg (2.87 lbs), simplifying handling and installation.
  • Certifications: Complies with international standards including CE, UL, and RoHS, guaranteeing quality, safety, and environmental responsibility.

Applications

The Mitsubishi MR-J4-20B Servo Amplifier is a versatile solution, perfectly suited for a diverse array of demanding industrial applications requiring high-speed, high-precision motion control:

  • Advanced Robotics: Provides the agility and accuracy needed for sophisticated robotic arms and automated assembly systems.
  • Packaging and Labeling: Ensures precise material handling and rapid indexing for efficient and consistent production lines.
  • Semiconductor Manufacturing: Meets the stringent requirements for ultra-fine positioning and repeatable movements in delicate semiconductor processes.
  • Material Handling: Powers conveyor systems, sorters, and automated guided vehicles (AGVs) with reliable and controlled motion.
  • Compact Precision Equipment: Ideal for integration into smaller, high-accuracy machinery where space is at a premium but performance cannot be compromised.

Why Choose the MR-J4-20B?

Choosing the Mitsubishi MR-J4-20B means investing in superior motion control technology. Its integration of advanced communication, robust safety features, and compact design positions it as a leading choice for optimizing industrial automation systems.

Availability & Shipping

  • In stock: MR-J4-20B 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-J4-20B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Mitsubishi Electric

The MR-J4-20B is a high-performance AC servo amplifier designed for precise motion control in industrial automation and robotics, offering exceptional speed and accuracy.

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.

CUSTOMER REVIEWS

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.

Are you an Electrical Distributor?Learn more about our distributor program

PALM Parts Solution sells used surplus products. PALM Parts Solution is not an authorized distributor, affiliate, or representative for the brands we carry. Products sold by PALM Parts Solution come with PALM Parts Solution's 1-Year Warranty and do not come with the original manufacturer's warranty. Designated trademarks, brand names and brands appearing herein are the property of their respective owners. This website is not sanctioned or approved by any manufacturer or tradename listed.

Read full disclaimer →