Part Number - MR-J3-350A

MR-J3-350A is

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Product Details

  • Melservo MR-J3 Servo Amplifier (MRJ3350A)
  • Manufacturer: Mitsubishi
  • Series: MELSERVO MR-J3

Product Description

The Mitsubishi MR-J3-350A (MRJ3350A) is a 3.5kW, 200V Melservo MR-J3 servo amplifier. The voltage of this power supply spans between 200 to 230VAC while running on 3-phases. The frequency is 50/60Hz. The voltage may vary between 170 to 253VAC. The frequency also may have an extended fluctuation of -5% to +5% of the 50/60Hz. The MR-J3-350A servo amplifier has a frequency response with the speed of 900Hz.

The MR-J3-350A servo amplifier may attach to a couple of servo motors. Only the servo motors listed may be connected: the HC-RP203 and HC-SP352. There are two means by which the servo motor may connect to a servo amplifier (which will be shown below).

The MR-J3-350A servo amplifier has numerous ports and three connectors. The top port, the CN5 port, attaches to a PC (personal computer) that utilizes a MR Configurator software by concatenating with a MR-J3USBCBL3M cable. The CN1 port connects to a terminal block. Position control modules or output control modules, specifically from the FX series or Q series mat also connect to this port to create a linkage with the servo amplifier. The CN1 port of the MR-J3-350A servo amplifier can also connect to operation panel by using a control signal. The encoder of the servo motor may connect to the CN2 of the servo amplifier. The servo motor may also connect to the MR-J3-350A servo amplifier’s U, V, and W connector. The CN3 port can connect to a GOT series operator display panels by a RS-232 communication. There are also two other connectors that attach to a power supply.

Here is the manual referenced:

Technical Specifications

Part Number: MR-J3-350A (MRJ3350A)
Module Type: Servo Amplifier
Voltage/Frequency: 200 to 230VAC, 3-phase 50/60Hz
Output Wattage: 3.5kW
Weight: 5.07lbs (2.3kg)

Shipping and Order Information

  • TRW Supply can usually ship in stock items same day before 3:30 PM EST for no extra cost and before 5 PM with a rush fee
  • Mitsubishi MELSERVO MR-J3 Shipping options vary by location. Call for an accurate quote.


  • The Mitsubishi MR-J3-350A comes with a two year warranty.
  • A three year warranty is available. Please inquire for pricing.

Additional Information

TRW Electric & Supply Company is a global automation supplier. We deliver reliable new and refurbished parts at a great value. Our product focus is Omron and Mitsubishi products, but we have been able to provide our customers with solutions from other manufacturers as well. Our goal is to supply the automation industry with the best service and pricing, and of course conduct business with a high level of integrity.

Authorized Distributors

A Mitsubishi Authorized Distributor for MELSERVO-MR-J3 is not the only source for Mitsubishi products. Many of the Mitsubishi products have been discontinued and therefore are no longer available from authorized suppliers. TRW Electric & Supply has many new and refurbished Mitsubishi MELSERVO-MR-J3 parts available for purchase.

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