Power Craft PWM 320 – Heavy Duty Welding Machine
The PWM 320 is a mid-capacity AC/DC transformer-type arc welder designed for general fabrication, maintenance, and medium-duty industrial work. It operates on a standard 220V power supply and delivers a flexible output current range suitable for most common welding tasks.
With an output of approximately 60–320 amps, it can handle a variety of electrode sizes (2.5 mm to 6 mm), making it versatile for welding mild steel and other common metals. Its 35% duty cycle allows consistent performance for intermittent welding jobs, while the 85% efficiency ensures reliable energy use.
Built with Class F insulation and a rugged transformer design, the PWM 320 is known for durability and long service life in workshop environments. However, due to its transformer construction, it is relatively heavy (around 100+ kg), making it more suitable for fixed installations rather than portable use.
Best suited for:
• Fabrication shops
• Repair and maintenance work
• Medium-thickness steel welding
Power Craft PWM 520 – Heavy Duty Welding Machine
The PWM 520 is a high-capacity version designed for heavy-duty industrial welding applications. It also runs on 220V but features a significantly larger transformer capacity, allowing it to deliver a much higher output current range of approximately 100–500 amps.
This higher amperage enables the machine to handle thicker materials and more demanding welding operations. Like the PWM 320, it supports electrode sizes from 2.5 mm to 6 mm, but performs better with larger electrodes and prolonged heavy welding tasks.
Despite its increased power, it maintains a 35% duty cycle and 85% efficiency, ensuring stable arc performance under load. Its robust construction, Class F insulation, and heavy-duty components make it ideal for continuous industrial use. The machine is also heavy (around 105 kg), reflecting its large transformer core and durability.
Best suited for:
• Heavy fabrication and structural welding
• Industrial and construction projects
• Thick plate and high-current applications
