Mitsubishi MR-J4-40A-RJ

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

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

RoHS Compliant

The Mitsubishi MR-J4-40A-RJ Digital AC-Servo Amplifier is designed for precision and high-performance in industrial automation applications. With a rated output of 400W, this servo amplifier is part of the MELSERVO-J4 series, known for its reliability and advanced functionality. The MR-J4-40A-RJ features a generic command interface and supports both single-phase and three-phase 230V power supplies, making it versatile for various setups.

This servo amplifier includes a built-in dynamic brake, enhancing safety and control during operation. It also incorporates the Safe Torque Off (STO) function compliant with IEC/EN 61800-5-2, ensuring a high level of safety by preventing unexpected motor starts.

The MR-J4-40A-RJ is CE, UL/cUL, EAC, and UKCA compliant, meeting international standards for quality and safety. Its compact design, with dimensions of 40mm width, 168mm height, and 170mm depth, and a weight of just 1kg, allows for easy integration into various systems.

Environmentally conscious, this product complies with RoHS and WEEE B2B directives, though it exceeds REACH limits for certain substances. It is free from hazardous materials, ensuring safe use and disposal.

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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

Rated Output
400 W
Power Supply
1PHASE 230V, 3PHASE 230V
Command Interface
GENERIC INTERFACE
Number of Axes
1
Dynamic Brake
BUILT-IN
Safety Function Type
STO (IEC/EN 61800-5-2)

Available Offers

(6)
MR-J4-40A-RJ Mitsubishi Electric, Servomotors & Servo Drives

Mitsubishi Electric

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

Mitsubishi Electric

Available:
5 pcs.
In-Stock
Updated at: 04-09-2026
Offer from:
Trusted supplier — Germany, member since 2024
Warranty:
24 months
MR-J4-40A-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-J4-40A-RJ, including specifications and features.

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

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