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GZ4 Series(YD-350GZ4 / YD-500GZ4 / YD-500GZ4TAL)

GZ4 Series
* In addition to this product (welding power source), a wire feeder, remote control unit, torch, and gas regulator are required for welding.

Key functions

  • Continuous evolution of low spatter control

  • High-precision pulsed MAG welding

  • Intuitive operation

  • Easy-to-set welding conditions

  • Output of various data to support quality control and frontline management


Significantly reducing spatter

Equipped with voltage feedback control. This series significantly reduces spatter generated during MTS-CO2 welding and SP-MAG welding.

Improving productivity

Equipped with HD-Pulse functions.
The HD-Pulse functions suppress undercut during high-speed welding while maintaining the quality of low spatter welding.

Strengths and Features

MTS control reduces spatter of CO2 gas welding and takes advantage of its constant pan bottom-shaped peentration

Low-spatter welding achieved by the MTS-CO2 welding method

This method suppresses the vibration of the molten pool when the reignition of the arc takes place after the short circuit is opened. In addition, it suppresses micro short-circuits that occur during the arc period, thereby reducing the amount of spatter by up to 70 %.

MTS : Metal Transfer Stabilization Control

SP-MAG welding method

Low-spatter and high-quality achieved by the SP-MAG welding method

The current is superimposed immediately after short circuit opening to increase the melting rate of the wire tip, thereby making the next short-circuiting smoother and shortening the cycle. This reduces the amount of spatter by up to 85 %.

 HD-Pulse welding

The HD-Pulse welding method achieves reduced heat input and low spatter welding

HD-Pulse welding can achieve a shorter arc length and narrower molten pool compared to conventional pulse MAG welding, thereby achieving higher-speed welding. Furthermore, undercut is suppressed and gap tolerance is improved. It is ideal for high-current high-speed welding of medium thickness plates.


Easy-to-understand display for intuitive operation

Users can adjust all welding-related settings at their fingertips.

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 aluminum MIG welding

アルミ溶接 リモコン

Remote control unit


Connection cable

Please purchase separately as necessary.

See details


Model number YD-350GZ4 YD-500GZ4
Rated input voltage*1 V 200 AC*1 (allowable fluctuation range:180 to 242)
Number of phases, rated frequency 3-phase, 50 / 60 Hz
Rated input kVA 17.7 28.8
Rated input kW 16.0 27.5
Maximum open circuit voltage V 78 DC 82 DC
Rated duty cycle (10-minute cycle) % 60 100
Output current adjustment range A 30 to 350 DC Without pulse: 30 to 500 DC
With pulse: 30 to 400 DC
Output voltage adjustment range V 12 to 36 DC 12 to 45 DC
Control method IGBT inverter type
Memory functions 50-channel storage and reproduction
Applicable welding process CO2 / MAG / MIG CO2 / MAG / MIG / Pulsed MAG / Pulsed MIG
Waveform control function Digital setting
Applicable shielding gas CO2(100 %), MAG (Ar : 80 %, CO: 20 %), Stainless steel MIG (Ar : 98 %, O: 2 %)
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 10.0 (adjustable in 0.1 increments)
Post-flow time s (seconds) 0.0 to 10.0 (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 Steel plate terminal (with M8 bolt)
External dimensions (width x depth x height)*2 mm 380 × 550 × 640 378 × 543 × 896
Mass kg 52 77

*1: Supports nominal voltages of 200/220 V.
*2: The depth dimension does not include the input power supply terminal cover on the rear panel.
* Voltage detection wire (5 m) included.
● View the required power supply capacity and cable thickness data



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