These heavy-duty, fan-cooled IGBT inverter power sources are engineered for MMA welding applications.
The unit automatically calculates optimal start and stop parameters according to your preset welding current.
Built-in booster circuit delivers extra voltage to achieve reliable arc ignition and great performance for cellulosic electrodes.
Wide current adjustment and strong welding capability allow this DC arc welder to work with various electrode types for multiple scenarios.
It supports general purpose, stainless steel, cellulosic and low-hydrogen welding rods to meet diverse welding demands.
Hot Start function facilitates easy arc striking even when using hard-to-ignite welding electrodes.
The ARC FORCE feature enables users to adjust and obtain ideal dynamic arc characteristics.
Designs:
| Parameter | UNMMA‑ 250BIE | UNMMA‑ 300BIE | UNMMA‑ 350BIE |
| Mains Voltage (V) | 220 | 220 | 220 |
| Frequency (HZ) | 50/60 | 50/60 | 50/60 |
| No‑load Voltage (V) | 75 | 75 | 65 |
| Rated Input Capacity (KVA) | 9.5 | 10.8 | 15.0 |
| Insulation Class | F | F | F |
| Output Current (A) | 20‑250 | 20‑300 | 20‑350 |
| Rated Duty Cycle (%) | 80 | 80 | 60 |
| Dimensions (CM) | 40*16*27 | 40*16*27 | 40*16*27 |
| Weight (KG) | 7.0 | 7.5 | 8.5 |
| Parameter | UNMMA‑ 250PIE | UNMMA‑ 300PIE | UNMMA‑ 350PIE |
| Mains Voltage (V) | 220 | 220 | 220 |
| Frequency (HZ) | 50/60 | 50/60 | 50/60 |
| No‑load Voltage (V) | 75 | 75 | 65 |
| Rated Input Capacity (KVA) | 9.5 | 10.8 | 15.0 |
| Insulation Class | F | F | F |
| Output Current (A) | 20‑250 | 20‑300 | 20‑350 |
| Rated Duty Cycle (%) | 80 | 80 | 60 |
| Dimensions (CM) | 42*19*34 | 42*19*34 | 42*19*34 |
| Weight (KG) | 8.0 | 8.5 | 9.5 |
| Parameter | UNMMA‑ 250MIE | UNMMA‑ 300MIE | UNMMA‑ 350MIE |
| Mains Voltage (V) | 220 | 220 | 220 |
| Frequency (HZ) | 50/60 | 50/60 | 50/60 |
| No‑load Voltage (V) | 75 | 75 | 65 |
| Rated Input Capacity (KVA) | 9.5 | 10.8 | 15.0 |
| Insulation Class | F | F | F |
| Output Current (A) | 20‑250 | 20‑300 | 20‑350 |
| Rated Duty Cycle (%) | 80 | 80 | 60 |
| Dimensions (CM) | 40*16*27 | 40*16*27 | 40*16*27 |
| Weight (KG) | 7.0 | 7.5 | 8.5 |
Optimizes arc ignition performance for hard‑to‑strike welding electrodes.
Adjustable to select optimal dynamic characteristics of welding arc.
Intelligent thermal protection prevents machine damage caused by overheating.
Efficient cooling system accelerates heat dissipation and extends service life.
Safeguards internal components against unstable input voltage surges.
High conversion rate, less power loss and improves welding working performance.
Low idle power consumption, improves energy efficiency during long working hours.
individual packing，6pcs/ctn
individual packing，6pcs/ctn
