300A MMA Stick Welder 220V/380V 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:30A 380V:24A |
Output Current | Single-phase 220V:30-200A Double-phase/ Three-phase 380V:30-315A |
Rated Duty Cycle | 40℃ 100% |
Inverter Technology | IGBT INVERTER |
Efficiency | 85% |
No-load Voltage | 65V |
Electrode Diameter | 3.2-5.0mm |
Welding Thickness Range | 1-20MM |
Insulation & Protection Class | F |
Machine Dimensions | 440*210*300MM |
Package Dimensions | 490*280*400MM |
Net Weight | 8.5KG |
Gross Weight | 10.9KG |
 | ◉ 30–200 A at 220 V and 30–315 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 ZX7-500SIC support? A1. It supports DC MMA (manual metal arc) stick welding with coated electrodes. The SiC-based inverter technology helps provide stable arc performance for fabrication, repair, and structural welding applications. Q2. What input voltages does it accept? A2. The machine operates on 220V single-phase power and 380V dual-phase or three-phase power at 50/60Hz, providing flexibility across workshops, construction sites, and fabrication facilities. Q3. What is the actual output current range? A3. The output range is 40–200A on 220V input and 40–300A on 380V input. It supports 3.2–5.0mm electrodes for fabrication, structural steel work, equipment repair, and industrial maintenance. Q4. What welding thickness can the ZX7-500SiC handle? A4. The machine supports welding applications on steel thicknesses from 1–20mm when matched with appropriate electrodes and welding parameters. Q5. What does the 100% duty cycle mean? A5. A 100% duty cycle means the machine is designed to support continuous welding operations under rated working conditions, making it suitable for demanding fabrication and maintenance environments. Q6. What does “SiC” mean and why is it important? A6. SiC stands for silicon carbide, an advanced semiconductor material used in the inverter system. SiC technology helps improve power conversion efficiency and supports stable welding performance in demanding applications. Q7. Does it require shielding gas or compressed air? A7. No. MMA stick welding uses flux-coated electrodes and does not require shielding gas or compressed air, making it suitable for outdoor and field welding applications. Q8. What is included in the package? A8. The standard package includes an electrode holder, ground cable, and related welding accessories. Please confirm the exact package contents with your supplier before ordering. Q9. What are the key technical specifications? A9. The ZX7-500SiC features SiC inverter technology, a 100% duty cycle, a no-load voltage of 65V, insulation class F, and efficiency of up to 85%. Q10. What applications is the ZX7-500SiC best suited for? A10. The ZX7-500SiC is suitable for heavy fabrication, structural steel work, equipment repair, industrial maintenance, construction projects, and applications requiring high-output continuous MMA welding. |
