Mitsubishi MR-J4-40B-RJ

Mitsubishi MR-J4-40B-RJ Digital AC-Servo Amplifier

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Mitsubishi MR-J4-40B-RJ MR-J4-40B-RJ Digital AC-Servo Amplifier — Servomotors & Servo Drives
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Product Description

RoHS CompliantLifecycle Status:

The Mitsubishi MR-J4-40B-RJ Digital AC-Servo Amplifier is a top-tier solution for precise motor control in industrial automation. Designed for motors with a power rating of 400 W, this amplifier is part of the renowned MELSERVO-J4 series, known for its reliability and advanced features. The MR-J4-40B-RJ supports single-phase and three-phase 230V power supplies, making it versatile for various applications.

One of the key features of this servo amplifier is its built-in Safety Torque Off (STO) function, compliant with IEC/EN 61800-5-2 standards, ensuring safe operation by preventing unexpected motor starts. Additionally, the integrated dynamic brake enhances safety by quickly stopping the motor in emergency situations.

The MR-J4-40B-RJ utilizes the SSCNET/H command interface, providing high-speed and high-precision communication for seamless integration into complex automation systems. Its compact design, with dimensions of 40 mm width, 168 mm height, and 170 mm depth, allows for easy installation in space-constrained environments.

This servo amplifier is compliant with multiple international standards, including CE, UL/cUL, EAC, and UKCA, ensuring it meets global safety and performance requirements. It is also RoHS compliant, reflecting Mitsubishi's commitment to environmental sustainability.

Applications for the MR-J4-40B-RJ include robotics, CNC machinery, and other automated systems requiring precise and reliable motor control. Its robust design and advanced features make it...

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Offer details

Best offer from:
Trusted supplier — United Kingdom, member since 2023
Availability:
5 pcs.
In-Stock
Updated at: 05-09-2026
Warranty:
12 months
Condition:
New Surplus
New Surplus - A new, unused, undamaged item without a manufacturer guarantee. The item may come without original packaging or in replacement packaging. If provided, the box may have been opened.
The Seller is responsible for shipping the product and invoicing

Specifications

Series
MELSERVO-J4
Type
MR-J4
Rated Capacity (kW)
0.4
Number of Axes
1
Safety Function Type
STO (IEC/EN 61800-5-2)
Power Supply (VAC)
1PHASE 230V, 3PHASE 230V

Available Offers

(8)
MR-J4-40B-RJ Mitsubishi Electric, Servomotors & Servo Drives

Mitsubishi Electric

Available:
13 pcs.
In-Stock
Updated at: 04-09-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months
MR-J4-40B-RJ Mitsubishi Electric, Servomotors & Servo Drives

Mitsubishi Electric

Available:
2 pcs.
In-Stock
Updated at: 04-09-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months
MR-J4-40B-RJ Mitsubishi Electric, Servomotors & Servo Drives

Mitsubishi Electric

Available:
1 pc.
On Request
Updated at: 22-08-2026
Offer from:
Trusted supplier — Romania, member since 2023, 1–4 employees

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Documents

Data Sheet

Datasheet for Mitsubishi Electric MR-J4-40B-RJ, including specifications and features.

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CAD Models

3D CAD model and technical drawings, ready for your design software.

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