270A MMA Welder 220V/380V with 100% Duty Cycle
 | 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 | Single-phase:220V 50HZ/60HZ Double-phase:380V 50HZ/60HZ Three-phase: 380V 50HZ/60HZ |
Rated Input Current | 220V:28A 380V:25A |
Output Current | 220V: 30A 380V:24A |
Rated Duty Cycle | 40℃ 100% |
Inverter Technology | IGBT INVERTER |
Efficiency | 85% |
No-load Voltage | 65V |
Electrode Diameter | 4.0-5.0mm |
Welding Thickness Range | 1-20MM |
Insulation & Protection Class | F |
Machine Dimensions | 410*180*280MM |
Package Dimensions | 420*230*350 MM |
Net Weight | 7.3KG |
Gross Weight | 8.15KG |
 | ◉ 30–200 A at 220 V and 30–270 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. ◉ 100% duty cycle Supports continuous operation at the specified duty-cycle current. |
◉ 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 ZX7-400SiC support? A1. The ZX7-400SiC is a DC MMA stick welder designed for manual metal arc welding with coated electrodes. It is suitable for fabrication, maintenance, construction, and structural steel applications. Q2. What input voltages does the ZX7-400SiC support? A2. The machine operates on single-phase 220V, dual-phase 380V, and three-phase 380V power supplies at 50/60Hz, providing flexibility for different industrial environments. Q3. What is the output current range? A3. The output range is 40–200A on 220V input and 40–270A on 380V input, allowing the machine to handle demanding welding applications with larger electrodes. Q4. What electrode sizes can the ZX7-400SiC use? A4. The machine is designed to run 4.0mm and 5.0mm electrodes, making it suitable for heavy-duty fabrication, repair, and maintenance work. Q5. What material thickness can it weld? A5. The ZX7-400SiC is suitable for welding steel sections from 1–16mm. Actual welding performance depends on electrode size, joint preparation, welding position, and operator technique. Q6. What does SiC technology mean? A6. SiC stands for Silicon Carbide. The ZX7-400SiC uses silicon carbide technology in its inverter system to support stable welding performance and efficient operation in demanding working conditions. Q7. What is the benefit of a 100% duty cycle? A7. A 100% duty cycle means the machine is rated for continuous operation at its specified output level, making it suitable for production work, heavy fabrication, and industrial maintenance tasks. Q8. Does the ZX7-400SiC require shielding gas? A8. No. MMA stick welding uses flux-coated electrodes that create their own shielding protection during welding, so no external gas supply is required. 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 ZX7-400SiC best suited for? A10. The ZX7-400SiC is suitable for heavy fabrication, structural steel work, construction projects, industrial maintenance, equipment repair, and other demanding welding applications requiring continuous-duty performance. |
