Product Description
The Mitsubishi MR-J3-PWS4-79-15M, a 15-meter power cable with a straight connector, is designed for optimal performance with 1kW and 2kW MELSERVO MR-J3 series servo motors, specifically HG-SP and HG-JP models. Its IP67-rated, shielded design offers high bending endurance and protection against noise, interference, dust, and water, ensuring reliable operation in temperatures from 0 to 55C (storage: -20 to 75C) and compliance with NFPA 79 safety standards.
Is Your Device Showing These Signs?
The Mitsubishi MR-J3-PWS4-79-15M cable commonly experiences issues such as conductor breaks due to repetitive motion, resulting in servo drive communication errors and positional inaccuracies. Insulation degradation from environmental factors or excessive bending leads to short circuits and drive faults. Connector damage, specifically pin breakage or loosening, causes intermittent signal loss and disrupts encoder feedback. Resolve these issues through cable replacement, proper cable routing to minimize stress, and secure connector terminations to ensure reliable servo system operation.
Technical specifications
The Mitsubishi MR-J3-PWS4-79-15M is a 15-meter, IP67-rated, shielded power cable with a straight connector for 1kW/2kW MELSERVO MR-J3 series servo motors (HG-SP/HG-JP). It offers high bending endurance, noise/interference/dust/water protection, operates from 0-55C, and complies with NFPA 79.
Our Repair Process for the
MR-J3-PWS4-79-15M
Our repair process for the Mitsubishi MR-J3-PWS4-79-15M cable begins with a thorough inspection to identify conductor breaks, insulation degradation, and connector damage. Cable replacement is mandatory when conductor breaks or significant insulation degradation are present. Proper cable routing is implemented to minimize stress and prevent future conductor issues. Connector terminations are secured to eliminate intermittent signal loss and ensure reliable encoder feedback. This process guarantees the servo system operates without communication errors, positional inaccuracies, short circuits, or drive faults.
Your Guarantee: Warranty & Lifetime Support
Your satisfaction is our top priority, and we confidently stand behind the quality of our repairs. That's why every repair service is covered by our comprehensive 24-month warranty. Furthermore, we offer lifetime phone support – if you have questions or need assistance related to our repair down the road, we're here to help. Our service commitment is straightforward: we guarantee our work, and if you're not satisfied, we will make it right. Learn More about our Repair process.
Comprehensive Repairs You Can Depend On
We take immense pride in the quality and reliability of our work. Our process goes beyond simply fixing the immediate problem. We perform a comprehensive inspection of your main board (or other equipment) and proactively replace components known to be failure-prone or showing signs of potential future failure. Before any item is returned, it undergoes rigorous functional testing to ensure it meets performance specifications and operates flawlessly. Visit our main Repair Services page to learn more.
Save Significantly
Our primary goal is to save you hundreds, or even thousands, of dollars compared to the cost of new equipment replacement. By repairing existing components, we provide an economical solution that is also eco-friendly. At Roc Industrial, our commitment to integrity and community drives our consistent growth and ensures you receive a reliable, cost-effective solution.


Please Note: Roc Industrial operates as an independent service provider and is not an authorized distributor for the manufacturers or brands mentioned. Consequently, the original manufacturer's warranty is not applicable to items repaired or sold by us. Roc Industrial provides its own 2-year warranty on all repair services performed.
Buying Options
To receive a quote within 2 hours, please provide us with the details of your requirements. Our team will promptly review your request and send you a custom offer.
Ships from Rochester, NY