The Ralli Wolf RA40HK ARC 400HK is a compact, energy-efficient IGBT inverter welding machine designed for professional welding, fabrication, maintenance, and repair applications. Operating on a 415V three-phase power supply, it provides an adjustable welding current range of 20–400A for versatile industrial welding tasks.

Featuring a copper-wound main transformer and choke coil, the machine is designed to deliver stable arc performance, precise current control, and reduced welding spatter. Its Voltage Reduction Device (VRD) function helps improve operator safety, while the lightweight 12.5 kg design makes transportation between workshops and job sites easier.

Key Features

400A maximum welding current
IGBT inverter technology
415V three-phase power supply
Adjustable welding current from 20A to 400A
Compact and lightweight design
Copper-wound main transformer
Choke coil for reduced welding spatter
VRD safety function
Stable arc performance and precise current control
Designed for reduced maintenance requirements
Suitable for MMA (stick) welding
Optional accessories available for compatible TIG welding applications

Applications

General metal fabrication
Industrial workshop welding
Construction and structural metalwork
Machinery maintenance and repair
Steel fabrication projects
General-purpose electrode welding
Low-hydrogen electrode welding
Stainless-steel electrode welding

Technical Specifications

Specification	Details
Brand	Ralli Wolf
Model	RA40HK
Product Series	ARC 400HK
Machine Type	IGBT Inverter Arc Welding Machine
Input Voltage	AC 415V ±15%
Phase	3-Phase
Frequency	50/60 Hz
Rated Input Current	13.7 A
Rated Input Power	9.84 kVA
Output Current Range	20–400 A
No-Load Voltage	75V ±5%
Rated Output Voltage	32V
Duty Cycle	60% at 300A
No-Load Loss	40W
Efficiency	85%
Power Factor	0.93
Insulation Grade	H
Housing Protection Grade	IP21S
Inverter Technology	IGBT
Net Weight	12.5 kg
Dimensions (L × W × H)	425 × 200 × 360 mm

Package Details

1 × Ralli Wolf RA40HK ARC 400HK IGBT Inverter Welding Machine
Welding cables, electrode holder, earth clamp, and optional accessories: confirm with the supplier.

Ralli Wolf RA40HK ARC 400HK 400A Heavy Duty IGBT Inverter Arc Welding Machine, 415V 3-Phase for Industrial Welding and Metal Fabrication

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