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GR3 Series (YD-350GR3 / YD-500GR3)

GR3 Series Catalog
*In addition to this product (welding power source), a wire feeder, remote control unit, torch, and gas regulator are required for welding.

Key functions

  • Full digital control achieves high-quality welding

  • High-precision encoder feedback control

  • Enhanced mobility achieved by eliminating the remote control unit cable to the power source

  • Easy-to-use operation panel and remote control unit

  • An aluminum welding model is also available


Spatter reduction

Full digital control ensures stable output from the start to end of welding. Significantly reduces the amount of spatter compared to conventional inverter-type models.

Wire feeding performance

The motor of the wire feeder was reviewed for improvements, enabling consistently uniform wire feeding.


Mutual compatibility of ancillary devices has been achieved with the VR series. The wire feeder and torch can be used without any modifications.

Strengths and Features

welding samples

Achieves high-quality welding with a smooth and stable arc start

This series enables a quick current rise when starting arc ignition, and a uniform wire tip shape through FTT control when completing welding, thereby achieving a consistently stable arc start. This series supports welding over a wide current range from a low current region to the rated current.


High-precision encoder feedback control

A motor equipped with an encoder performs high-precision wire feeding. The uniform wire feeding performance is maintained even when external factors occur, including changes in the power supply voltage and ambient temperature.

remote cableless

Enhanced mobility achieved by eliminating the remote control unit cable to the power source

Reduced the number of cables for improving ease of maintenance. Since the remote control unit is connected to the wire feeder, the number of cables for connecting the welding power source and wire feeder was reduced to three (control cable, power cable, and gas hose).


Simple and easy-to-use operation panel

A simple operation panel was adopted for the welding power source in conformity with use environments. Users can adjust all welding-related settings at their fingertips. The operation panel is bright and easy to see even in the welding frontlines and allows smooth settings in order from left to right.


A remote control unit for simple memory reproduction is also available

The recorded welding conditions can be reproduced by the remote control unit. (5 conditions)


An aluminum welding model is also available

The 350GR3-based model is capable of hard aluminum welding.

Full Digital CO/ MAG / MIG Welding Machine
● Applicable wire: hard aluminum (⌀1.2) ● Recommended current range: 80 A to 200 A

*Please refer to the catalog for details.

Option List


Wire feeder

オプション トーチ

Welding torch

オプション ガス調整器

Gas regulator

For CO2 / MAG / MIG welding

For CO2 welding
* YX-01GB1 is a gas pressure reduction detection unit with a buzzer alarm.


Remote control unit

* Cable length : 2 m

See details


Connection cable

Please purchase separately as necessary.

See details


Model number YD-350GR3 YD-500GR3
Rated input voltage V 200 AC*1 (allowable fluctuation range:180 to 242)
Number of phases, rated frequency 3-phase, 50 / 60 Hz
Rated input kVA 17 28
kW 16 26.5
Maximum open circuit voltage V 68 DC 77 DC
Rated duty cycle (10-minute cycle) % 60 100
Output current adjustment range A 30 to 350 DC 60 to 500 DC
Output voltage adjustment range V 12 to 36 DC 14 to 45 DC
Control method IGBT inverter type
Memory functions 9-channel storage and reproduction
Applicable welding process CO2 / MAG / MIG
Waveform control function Digital setting
Applicable shielding gas CO2 : 100 %,
MAG : 80 % Ar  and 20 % CO2,
Stainless steel MIG : 98 % Ar and 2 % O2
Applicable wire diameter mm 0.8 / 0.9 / 1.0 / 1.2 1.2 / 1.4 / 1.6
Applicable wire materials Mild steel / Mild steel FCW / Stainless steel / Stainless steel FCW
Pre-flow time s (seconds) 0.0 to 5.0 (adjustable in 0.1 increments)
Post-flow time s (seconds) 0.0 to 5.0 (adjustable in 0.1 increments)
Arc spot time s (seconds) 0.3 to 10.0 (adjustable in 0.1 increments)
Input power supply terminal Terminal block (M5 bolt fixing)
Output terminal Copper plate terminal (with M8 bolt)
External dimensions (width x depth x height) mm 380 × 540 × 640 380 × 540 × 810
Mass kg 45 65

*1: Supports nominal voltages of 200/220 V.
● View the required power supply capacity and cable thickness data



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