
HAMMER ARC 4000 400V
Industrial MMA welder 400 A · 400 V three-phase
Tough, as it should be. Fully industrial.
- 400A
- Max current
- 350A
- At 100% duty cycle
- 80V
- Open-circuit voltage
01 / Overview
Tough, as it should be. Fully industrial.
The HELIOS HAMMER ARC 4000 is a fully industrial stick (MMA) welder, in the 400 V three-phase supply version. It delivers 400 A at 60 % and 350 A at 100 % duty cycle for non-stop production, with an 80 V open-circuit voltage and strong tolerance to mains fluctuations.
Peak current control gives a long, stiff, stable arc that won't break. It welds carbon and low-alloy steels, cast iron, copper and its alloys and other non-ferrous metals, with 2.5 to 6.0 mm electrodes preset from the diameter selector.
HELIOS technology: Hot Start for easy strikes with a cold electrode, Arc Force for better droplet transfer, HYPER ARC advanced arc control, touch-start Lift TIG with no high frequency, Anti Stick that cuts the current if the electrode sticks, and VRD, which reduces the no-load voltage for safety. The digital display shows real-time amperage and voltage, with an alarm indicator.

Model
HAMMER ARC 4000 400V
Reference
—
Family
Stick MMA
Sheet / Rev.
01 / A
Data from the official HELIOS datasheet. Subject to continuous improvement.
02 / Technical sheet
Technical sheet
Current range
30–400A
60%
Duty cycle
80V
Open-circuit voltage
Weight
17kg
Electrical
7- Power supply
- 400 V · 3PH · 50/60 Hz
- Current range
- 30 – 400 A
- Working voltage
- 21.2 – 36 V
- Current at duty cycle
- 400 A / 36 V @ 60% · 350 A / 34 V @ 100%
- Open-circuit voltage (OCV)
- 80 V
- Voltage reduction device (VRD)
- ✓
- Output current
- DC
Process & control
5- Arc control
- HYPER ARC
- Processes
- MMA / TIG DC Lift Arc
- Electrode diameter
- Ø 2.5 – 6.0 mm
- Display
- Digital A / V display with alarm
- Technology
- Inverter IGBT
Physical & environment
5- Standard
- EN 60974-1
- Insulation class
- H
- Protection rating
- IP21S
- Dimensions
- 508 × 273 × 423 mm
- Weight
- 17 kg
Other data
5- Efficiency
- ≥ 87%
- Adjustable Arc Force
- 0 – 100 A
- Adjustable Hot Start
- 0 – 100 A
- Anti Stick
- ✓
- Output characteristic
- Constant current (CC)
PDF datasheet
Take the full datasheet with you
A PDF with the photo, every figure and this machine's QR code, in HELIOS's own design and with its own document ID so you always know which revision you are holding.
Knowledge centre
Technical guides for this machine
04 / Related








