H-420K 220V/380V IGBT Digital MMA Welder 30-200A Arc Welder
 | THE COMPLETE MACHINE COMES WITH A ONE-YEAR WARRANTY. |  | FOR EACH SHIPMENT, WE WILL PROVIDE SPARE PARTS FREE OF CHARGE, EQUIVALENT TO 1%–2% OF THE TOTAL ORDER VALUE. |
 | ACCESSORIES ☑ 3M 200A Electrode Holder Cable x1 ☑ 2M Ground Clamp Cable x1 |
Machine Type | MMA WELDER |
Function | MMA (Hot start, Arc force, Anti-stick, VRD) |
Input Voltage / Frequency | 220V/380V 50HZ/60HZ |
Rated Input Current | 220V:28A 380V:25A |
Output Current | 220V:30-180A 380V:30-200A |
Rated Duty Cycle | 40℃ 40% |
Inverter Technology | IGBT INVERTER |
Efficiency | 85% |
No-load Voltage | 65V |
Electrode Diameter | 2.5-5.0mm |
Welding Thickness Range | 1-16MM |
Insulation & Protection Class | F |
Machine Dimensions | 300*140*230MM |
Package Dimensions | 355*160*285MM |
Net Weight | 4.2KG |
Gross Weight | 4.8KG |
 | ◉ 30–180 A at 220 V and 30–200 A at 380 V Adjust the current to suit the electrode size and welding job. ◉ Hot start, arc force and anti-stick Makes arc starting easier, helps maintain the arc and reduces sticking interruptions. ◉ J422, E6011 and E7018 electrode compatibility Supports common electrode types, including acid-coated and basic-coated options. |
◉ Large LED display Makes settings easy to read and check before welding. ◉ Synergic adjustment Simplifies setup for users with less welding experience. ◉ Reinforced carry handle Provides a comfortable, sturdy grip for carrying the machine. |  |
 | ◉ Overheat, overcurrent and voltage protection Helps protect the machine from excessive heat, current and unsuitable supply voltage. ◉ VRD and soft start Reduces open-circuit voltage when VRD is active and limits the startup current surge. ◉ Digital control Welding parameters can be configured at the factory to suit your requirements. |
Q1. What welding process does the H-420K support? A1. The H-420K is a digital DC MMA stick welder designed for manual metal arc welding with coated electrodes. It provides stable arc performance for fabrication, repair, and maintenance applications. Q2. Does the H-420K support both 220V and 380V input power? A2. Yes. The machine operates on both 220V and 380V power supplies at 50/60Hz and automatically adapts to the available input voltage without manual switching. Q3. What is the output current range? A3. The output range is 30–180A on 220V input and 30–200A on 380V input, allowing users to adjust welding current for different electrode sizes and applications. Q4. What electrode sizes can the H-420K run? A4. The H-420K supports 2.5mm, 3.2mm, 4.0mm, and 5.0mm electrodes on both 220V and 380V power supplies. Q5. What material thickness can it weld? A5. The machine is suitable for welding steel sections from 1–16mm. Actual welding performance depends on electrode size, joint preparation, welding position, and operator technique. Q6. Does the H-420K require shielding gas? A6. No. MMA stick welding uses flux-coated electrodes that create their own shielding protection during welding, so no external gas supply is required. Q7. What technology does the H-420K use? A7. The machine uses IGBT inverter technology to provide stable welding performance, efficient power conversion, and a compact machine design. Q8.What are the main technical specifications? A8. The H-420K features a rated duty cycle of 40%, a no-load voltage of 65V, insulation class F, and efficiency of up to 85%. Q9. What accessories are included? A9. The standard package includes a 3m electrode holder cable and a 2m ground cable. Users only need suitable electrodes and personal protective equipment before operation. Q10. What applications is the H-420K best suited for? A10. The H-420K is suitable for fabrication workshops, repair shops, farm maintenance, equipment servicing, construction projects, metal installation work, and general steel welding applications. |
