
HAMMER ARC 4000 MV
Industrial multi-voltage MMA welder 380 A · 220–440 V
One machine. Any supply.
- 380A
- Max current
- 80V
- Open-circuit voltage
- 16kg
- Weight
01 / Overview
One machine. Any supply.
The HELIOS HAMMER ARC 4000 MV is a multi-voltage industrial stick (MMA) welder: it runs on 220 V single- or three-phase and on 400/440 V three-phase only, whatever supply the site has. It delivers 380 A at 60 % on 440 V and, on 220 V, 260 A at 60 % and 220 A at 100 % duty cycle, with an 80 V open-circuit voltage.
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, with an alarm indicator.

Model
HAMMER ARC 4000 MV
Reference
HRH-400-MLV
Family
Stick MMA
Sheet / Rev.
01 / A
Data from the official HELIOS datasheet. Subject to continuous improvement.
02 / Technical sheet
Technical sheet
Current range
30–260A
60%
Duty cycle
80V
Open-circuit voltage
Weight
16kg
Electrical
6- Power supply
- 220 V · 1PH/3PH · 400/440 V · 3PH · 50/60 Hz
- Current range
- 30 – 260 A (220 V) · 30 – 380 A (440 V)
- Current at duty cycle
- 440 V: 380 A @ 60% · 220 V: 260 A @ 60% · 220 A @ 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 amperage display with alarm
- Technology
- Inverter IGBT
Physical & environment
5- Standard
- EN 60974-1
- Insulation class
- H
- Protection rating
- IP21S
- Dimensions
- 550 × 240 × 410 mm
- Weight
- 16 kg
Other data
5- Efficiency
- ≥ 85%
- Adjustable Arc Force
- ✓
- Adjustable Hot Start
- ✓
- 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










