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Mitsubishi MR-J4-40B AC Servo Amplifier

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Mitsubishi MR-J4-40B

by Mitsubishi Electric

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OverviewThe Mitsubishi MR-J4-40B is a state-of-the-art AC servo amplifier within the acclaimed MELSERVO MR-J4 series, specifically engineered to deliver outstanding performance in rigorous industrial settings. With a robust 400W output capacity, this amplifier is crafted to enhance the accuracy and velocity of your machinery. It seamlessly integrates into intelligent factory ecosystems via its sophisticated SSCNET III/H communication interface, ensuring dependable and high-speed data exchange. Featuring advanced safety and diagnostic functionalities, the MR-J4-40B offers a resilient and intelligent solution for contemporary automation challenges, making it an essential element for optimizing operational efficiency.Key Features High-Accuracy Output: Provides a consistent 400W of power, ensuring accurate and repeatable motion control for critical tasks. Advanced Communication: Utilizes the SSCNET III/H optical network for exceptionally fast, noise-resistant data transmission and effortless system integration. Adaptive Auto-Tuning: Incorporates real-time adaptive tuning, continuously optimizing performance and simplifying setup for diverse load conditions. Integrated Safety: Includes built-in STO (Safe Torque Off) functionality, elevating operational safety and streamlining adherence to industrial standards. Compact Design: Engineered with a space-saving footprint, enabling straightforward installation and integration into existing control panels without sacrificing performance. Broad Voltage Compatibility: Operates effectively with a 200–240V AC, 3-phase input, ensuring wide applicability across various industrial power grids. Rapid Response: Boasts a swift control response frequency of 2.5 kHz, facilitating highly dynamic and responsive motion capabilities. Technical SpecificationsThe Mitsubishi MR-J4-40B servo amplifier is constructed to precise standards, providing dependable and consistent operation: Model: MR-J4-40B Series: MELSERVO MR-J4 Rated Output: 400W Rated Current: 2.8A Input Voltage: 200–240V AC, 3-phase Power Supply Frequency: 50/60 Hz Communication Interface: SSCNET III/H (optical network) Mounting Style: Panel mount Weight: Approximately 1.5 kg (3.3 lbs) Operating Temperature: 0°C to 55°C Certifications: CE, UL, RoHS compliant ApplicationsThe adaptability and precision of the MR-J4-40B make it an optimal choice for a broad spectrum of demanding industrial uses: Precision Machining Centers: Ensures high accuracy and fluid operation for milling, turning, and grinding applications. High-Speed Robotics: Powers intricate robotic movements, enabling rapid and accurate manipulation in manufacturing and assembly lines. Semiconductor Equipment: Delivers the essential motion control needed for delicate semiconductor manufacturing and testing processes. Automated Inspection Systems: Facilitates the accurate and quick positioning required for advanced quality control and inspection. Multi-Axis Motion Systems: Offers synchronized control across multiple axes, vital for complex automation tasks in diverse sectors. Packaging and Material Handling: Improves efficiency and throughput in automated packaging and material handling machinery. Why Choose?Unmatched PrecisionAchieve superior control accuracy in position, speed, and torque, leading to higher quality outputs and reduced waste.Seamless IntegrationThe SSCNET III/H interface guarantees high-speed, noise-resistant communication, simplifying integration into complex automation networks.Optimized for SpaceIts compact and lightweight design is perfect for modern automation setups where control panel space is at a premium.Enhanced ReliabilityBenefit from intelligent monitoring features and advanced diagnostics that enable predictive maintenance, minimizing downtime and maximizing operational uptime.Future-Ready TechnologyAs part of the MELSERVO MR-J4 series, this amplifier is designed to meet the evolving demands of smart factories, ensuring long-term compatibility and performance.Order NowElevate the performance of your industrial automation systems with the Mitsubishi MR-J4-40B servo amplifier. Contact us today to learn more and place your order.FAQWhat is the power output of the Mitsubishi MR-J4-40B?The MR-J4-40B servo amplifier provides a consistent 400W of output power.What communication interface does the MR-J4-40B use?The amplifier utilizes the SSCNET III/H optical network for advanced communication.Is the MR-J4-40B suitable for high-speed applications?Yes, its rapid control response frequency of 2.5 kHz makes it ideal for dynamic and responsive motion capabilities.What are the key safety features of this model?The MR-J4-40B incorporates built-in STO (Safe Torque Off) functionality for enhanced operational safety.Can this servo amplifier be integrated into existing control panels easily?Absolutely, its compact design and panel mount style facilitate straightforward installation and integration.

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$450.00
18 in stock

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PRODUCT DETAILS

Mitsubishi MR-J4-40B

Overview

This is a genuine Siemens component. 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 Siemens catalog part
  • Tested before shipment
  • Backed by PalmPartsSolution warranty
  • Cross-reference and revision assistance available
  • Compatible with the broader Siemens automation ecosystem

Compatibility

When ordering, match the full catalog/part number, hardware revision, and firmware revision called out by your Siemens 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 Siemens 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 Siemens platform with documented conversion notes

Contact our engineering team if you need help choosing between these tracks.

Technical Specifications

The Mitsubishi MR-J4-40B servo amplifier is constructed to precise standards, providing dependable and consistent operation:

  • Model: MR-J4-40B
  • Series: MELSERVO MR-J4
  • Rated Output: 400W
  • Rated Current: 2.8A
  • Input Voltage: 200–240V AC, 3-phase
  • Power Supply Frequency: 50/60 Hz
  • Communication Interface: SSCNET III/H (optical network)
  • Mounting Style: Panel mount
  • Weight: Approximately 1.5 kg (3.3 lbs)
  • Operating Temperature: 0°C to 55°C
  • Certifications: CE, UL, RoHS compliant

Applications

The adaptability and precision of the MR-J4-40B make it an optimal choice for a broad spectrum of demanding industrial uses:

  • Precision Machining Centers: Ensures high accuracy and fluid operation for milling, turning, and grinding applications.
  • High-Speed Robotics: Powers intricate robotic movements, enabling rapid and accurate manipulation in manufacturing and assembly lines.
  • Semiconductor Equipment: Delivers the essential motion control needed for delicate semiconductor manufacturing and testing processes.
  • Automated Inspection Systems: Facilitates the accurate and quick positioning required for advanced quality control and inspection.
  • Multi-Axis Motion Systems: Offers synchronized control across multiple axes, vital for complex automation tasks in diverse sectors.
  • Packaging and Material Handling: Improves efficiency and throughput in automated packaging and material handling machinery.

Why Choose the MR-J4-40B?

Unmatched Precision

Achieve superior control accuracy in position, speed, and torque, leading to higher quality outputs and reduced waste.

Seamless Integration

The SSCNET III/H interface guarantees high-speed, noise-resistant communication, simplifying integration into complex automation networks.

Optimized for Space

Its compact and lightweight design is perfect for modern automation setups where control panel space is at a premium.

Enhanced Reliability

Benefit from intelligent monitoring features and advanced diagnostics that enable predictive maintenance, minimizing downtime and maximizing operational uptime.

Future-Ready Technology

As part of the MELSERVO MR-J4 series, this amplifier is designed to meet the evolving demands of smart factories, ensuring long-term compatibility and performance.

Availability & Shipping

  • In stock: MR-J4-40B 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-J4-40B ships with a 1-Year PALM Parts warranty and a 30-day return window.
SUPPORT

Frequently Asked Questions — Mitsubishi Electric

The MR-J4-40B servo amplifier provides a consistent 400W of output power.

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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