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Mitsubishi MR-J4-350B AC Servo Amplifier

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Mitsubishi MR-J4-350B

by Mitsubishi Electric

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OverviewThe Mitsubishi MR-J4-350B is an advanced alternating current servo amplifier, a key component within the acclaimed MR-J4 family. Engineered for the most rigorous motion control tasks, this amplifier provides exceptional accuracy, rapid response, and operational adaptability. Featuring a substantial 3.5kW rated output and seamless connectivity via SSCNET III/H, the MR-J4-350B ensures incredibly fast feedback and real-time operation, resulting in flawless performance for any automation system. This amplifier is meticulously crafted to satisfy the strict requirements of contemporary industrial environments, offering a dependable foundation for high-performance machinery.Key Features Series: Part of the MR-J4 lineup, showcasing Mitsubishi Electric's innovative servo drive technology. Rated Output: 3.5kW, delivering ample power for a wide range of industrial equipment. Input Voltage: 3-phase 200–230V AC, compatible with standard industrial power grids. Control Modes: Offers flexible control methods including position, speed, and torque control for various application needs. Interface: SSCNET III/H (fiber-optic network), guaranteeing high-speed and disturbance-resistant communication. Feedback: Supports both absolute and incremental encoder compatibility for accurate position sensing. Safety Functions: Integrated STO (Safe Torque Off) provides a crucial safety mechanism, adhering to global safety regulations. Tuning: Features real-time automatic tuning and advanced vibration dampening for smooth and precise operation. Cooling Method: Fan-cooled, maintaining optimal operating temperatures and extending product life. Mounting: Designed for easy panel installation within control cabinets. Environment: RoHS compliant, meeting environmental protection guidelines. Technical Specifications Catalog Number: MR-J4-350B Rated Output Power: 3.5kW Input Voltage: 3-phase 200–230V AC ±10% Frequency: 50/60 Hz Maximum Speed: Up to 6000 rpm (when connected with a compatible motor) Encoder Resolution: Supports up to 4 million pulses per revolution for outstanding positional accuracy. Communication Protocol: SSCNET III/H, enabling high-speed and synchronized multi-axis control. Ambient Temperature: 0°C to 55°C, ensuring robust performance in diverse industrial settings. Mounting Method: Panel mount, for a secure and integrated setup. Protection: IP20 (standard), offering safeguarding against solid objects larger than 12.5mm. Dimensions: Approximately 180 x 90 x 180 mm (Height x Width x Depth). Weight: Approximately 3.8 kg. ApplicationsThe Mitsubishi MR-J4-350B servo amplifier is highly adaptable and perfectly suited for a wide array of industrial applications where accuracy, speed, and dependability are essential. Its robust design and advanced features make it an excellent choice for: High-speed assembly lines: Facilitating quick and precise component placement. Robotics and pick-and-place systems: Delivering accurate motion control for intricate tasks. CNC and packaging machinery: Ensuring smooth and precise machining and packaging operations. Positioning tables and conveyor systems: Providing accurate and consistent material handling. Advanced factory automation solutions: Serving as a primary component in complex and integrated automation setups. Why ChooseSelecting the Mitsubishi MR-J4-350B servo amplifier means investing in superior performance and dependability for your automation needs. This model stands out due to several compelling advantages: High Output Capacity: With a substantial 3.5kW power output, it effortlessly manages even the most demanding motion control requirements. Advanced Connectivity: The integrated SSCNET III/H interface guarantees real-time servo communication, vital for synchronized multi-axis control and high-speed data exchange. Auto-Tuning & Vibration Suppression: Experience exceptionally smooth and precise control thanks to its advanced real-time automatic tuning and vibration dampening capabilities. Order NowUpgrade your industrial automation systems with the Mitsubishi MR-J4-350B servo amplifier. Contact us today at Palm Parts Solutions to learn more or to place your order.FAQWhat is the rated output of the MR-J4-350B?The MR-J4-350B has a rated output of 3.5kW, making it suitable for a wide range of industrial machinery applications.What communication protocol does the MR-J4-350B use?It utilizes the SSCNET III/H communication protocol, which provides high-speed and synchronized multi-axis control.Can the MR-J4-350B be used in high-precision applications?Yes, with an encoder resolution supporting up to 4 million pulses per revolution, it offers exceptional positional accuracy for high-precision tasks.

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PRODUCT DETAILS

Mitsubishi MR-J4-350B

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

  • Catalog Number: MR-J4-350B
  • Rated Output Power: 3.5kW
  • Input Voltage: 3-phase 200–230V AC ±10%
  • Frequency: 50/60 Hz
  • Maximum Speed: Up to 6000 rpm (when connected with a compatible motor)
  • Encoder Resolution: Supports up to 4 million pulses per revolution for outstanding positional accuracy.
  • Communication Protocol: SSCNET III/H, enabling high-speed and synchronized multi-axis control.
  • Ambient Temperature: 0°C to 55°C, ensuring robust performance in diverse industrial settings.
  • Mounting Method: Panel mount, for a secure and integrated setup.
  • Protection: IP20 (standard), offering safeguarding against solid objects larger than 12.5mm.
  • Dimensions: Approximately 180 x 90 x 180 mm (Height x Width x Depth).
  • Weight: Approximately 3.8 kg.

Applications

The Mitsubishi MR-J4-350B servo amplifier is highly adaptable and perfectly suited for a wide array of industrial applications where accuracy, speed, and dependability are essential. Its robust design and advanced features make it an excellent choice for:

  • High-speed assembly lines: Facilitating quick and precise component placement.
  • Robotics and pick-and-place systems: Delivering accurate motion control for intricate tasks.
  • CNC and packaging machinery: Ensuring smooth and precise machining and packaging operations.
  • Positioning tables and conveyor systems: Providing accurate and consistent material handling.
  • Advanced factory automation solutions: Serving as a primary component in complex and integrated automation setups.

Why Choose the MR-J4-350B?

Selecting the Mitsubishi MR-J4-350B servo amplifier means investing in superior performance and dependability for your automation needs. This model stands out due to several compelling advantages:

  • High Output Capacity: With a substantial 3.5kW power output, it effortlessly manages even the most demanding motion control requirements.
  • Advanced Connectivity: The integrated SSCNET III/H interface guarantees real-time servo communication, vital for synchronized multi-axis control and high-speed data exchange.
  • Auto-Tuning & Vibration Suppression: Experience exceptionally smooth and precise control thanks to its advanced real-time automatic tuning and vibration dampening capabilities.

Availability & Shipping

  • In stock: MR-J4-350B 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-J4-350B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Mitsubishi Electric

The MR-J4-350B has a rated output of 3.5kW, making it suitable for a wide range of industrial machinery applications.

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.

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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.

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