The Mitsubishi MR-J4-70A-RJ is a servo amplifier rated for 0.75 kW output, running on a 1-phase 200 VAC supply. It uses full closed-loop control, meaning the drive continuously compares the commanded position against encoder feedback from the motor to correct following error in real time — essential for applications needing tight positional accuracy without mechanical backlash compensation.

Mitsubishi MR-J4-70A-RJ Servo Amplifier, 0.75 kW, Full Close
MPNMR-J4-70A-RJ
Mitsubishi MR-J4-70A-RJ servo amplifier, 0.75 kW output, 1-phase 200 VAC input, full closed-loop control.
$1,943.30Ref. price · indicative, final on quote
Source DocumentedChannel stated on listing & quote
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Worldwide DispatchDHL/FedEx — transit quoted per order
Independent China distributor & sourcing agent· Listing updated Sep 2026
Specifications
| Parameter | Value |
|---|---|
| Weight | 0.91 kgs |
| Interface | GENERAL PURPOSE |
| Power supply | 1 PHASE, 200 VAC |
| Rated output | 0.75 KW OUTPUT |
| Special spec | FULL CLOSED LOOP CONTROL |
Product details
Frequently asked questions
What are the key ratings for MR-J4-70A-RJ?
It delivers 0.75 kW rated output from a 1-phase 200 VAC supply, with full closed-loop control architecture.
MPN
MR-J4-70A-RJ