Part Number - MR-J2-350B

MR-J2-350B is

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Product Details

  • Melservo MR-J2 Servo Amplifier (MRJ2350B)
  • Manufacturer: Mitsubishi
  • Series: MELSERVO MR-J2

Product Description

The Mitsubishi MR-J2-350B (MRJ2350B) is a 3.5kW, 200V Melservo MR-J2 servo amplifier. The power supply of this module has 3-phases for its voltage. The voltage itself spans from 200 to 230VAC; withal, the voltage is permitted to have a larger varying range of 170 to 253VAC. The frequency for this power supply is 50/60Hz, but the frequency may also oscillate between +5% and -5% of the original frequency.

There are multifarious motors that may link with the MR-J2-350B servo amplifier from the HC-SF, HC-RF, and HC-UF series. The motors which may be applied are the following: the HC-SF301, HC-SF352, HC-SF353, HC-RF203, and HC-UF202.

The MR-J2-350B servo amplifier has four ports and many screw terminals. The CN3 port may connect to a personal computer that utilizes the necessary system software. Then, the CN2 port may attach to the encoder of one of the aforementioned servo motors. For the power supply on the servo motor, a connection must be made by the three of the screw terminals that are in the MR-J2-350B servo amplifier, the ‘U, V, and W’ screw terminals. The last two ports, the CN1A and CN1B, connect to companion MRJ2-B servo amplifiers. The CN1A port will connect to the CN1B port of a servo amplifier that has come before the MR-J2-350B servo amplifier; the CN1B port attaches to the CN1A port of a succeeding servo amplifier. The other screw terminals may either be grounded or connect to the FR-BAL reactor which connects to a magnetic contactor which itself connects to a circuit breaker.

Here is the manual that may have been referenced:

Technical Specifications

Part Number: MR-J2-350B (MRJ2350B)
Module Type: Servo Amplifier
Voltage/Frequency: 200 to 230VAC, 3-phase 50/60Hz
Output Wattage: 3.5kW
Weight: 4.4lbs (2.0kg)

Related Parts

MR-J2-350A - Mitsubishi Melservo MR-J2 Servo Amplifier (MRJ2350A)
HC-SF352B - Mitsubishi Melservo HC Servo Motor with Brake, AC, 3.5KW (HCSF352B)
HC-SF352K - Mitsubishi Melservo HC Servo Motor with Key, AC, 3.5KW (HCSF352K)
HC-SF352BK - Mitsubishi Melservo HC Servo Motor with Brake Key, AC, 3.5KW (HCSF352BK)
HC-SF353 - Mitsubishi Melservo HC Servo Motor, 3.5KW (HCSF353)
HC-SF353BK - Mitsubishi Melservo HC Servo Motor with Brake Key, 3.5KW (HCSF353BK)
HC-RF203 - Mitsubishi Melservo HC Servo Motor, 2KW (HCRF203)

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-J2 Shipping options vary by location. Call for an accurate quote.


  • The Mitsubishi MR-J2-350B 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-J2 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-J2 parts available for purchase.

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