ESAB MIG 402i Welding Machine 400 Amps

The ESAB MIG 402i Welding Machine is an industrial-grade welding power source designed for professional and heavy-duty welding applications. Based on IGBT inverter technology, the MIG 402i is designed to provide reliable welding performance, easy arc control and efficient operation.

With a welding output of 400 A at 100% duty cycle, the ESAB MIG 402i Welding Machine 400 Amps is suitable for demanding fabrication and industrial welding requirements. ESAB specifies the machine for applications including structural steel fabrication, ship and offshore yards, civil construction and heavy fabrication.

Key Features of ESAB MIG 402i Welding Machine

The ESAB MIG 402i combines inverter technology with digital controls and a 4-roll wire feeding system.

Key features include:

400 A welding output at 100% duty cycle
IGBT inverter technology
4-roll wire feeder
Wire-feed speed of 1.5–20 m/min
Digital interface for welding parameter selection
16 sets of program memory
Fine voltage adjustment
Wide input voltage tolerance
High power factor and energy-efficient operation
Suitable for heavy fabrication
Supports MIG/MAG, MMA and TIG processes
Euro torch connection
IP21S enclosure class
IEC 60974-1 standard
Rugged industrial construction

400 Amp MIG Welding Machine

The ESAB MIG 402i 400 Amp welding machine is designed for high-current welding applications. ESAB specifies a MIG current range of 30–400 A, while the machine can also operate in MMA and TIG processes with a current range of 20–400 A.

The machine provides a MIG voltage range of 15.5–34 V, allowing welding parameters to be adjusted according to the material, wire, shielding gas and application requirements.

The correct welding parameters should always be selected according to the welding procedure, material thickness, wire type and applicable safety requirements.

IGBT Inverter Technology

The ESAB MIG 402i Welding Machine is based on IGBT inverter technology. ESAB states that this technology provides reliable equipment with welding characteristics and easy arc control.

The machine also features energy-saving characteristics through a high power factor and efficiency. ESAB specifies a power factor of 0.91 and efficiency of 90% at maximum current.

4-Roll Wire Feeder

The MIG 402i uses a 4-roll wire feeder system designed to provide smooth and consistent wire feeding.

The wire feeder operates at 1.5–20 m/min and supports wire diameters from 0.8 to 1.2 mm according to ESAB’s published specifications.

Consistent wire feeding is important for maintaining stable welding performance during continuous MIG/MAG welding operations.

Digital Welding Controls

The ESAB MIG 402i features a user-friendly digital interface for selecting welding materials, wire types and gas settings. It also provides 16 sets of welding parameter program memory, allowing commonly used welding parameters to be stored for convenient operation.

The predefined parameters and fine voltage adjustment are designed to make parameter selection easier for professional welding operators.

Welding Processes

The ESAB MIG 402i supports multiple welding processes:

GMAW / MIG-MAG

The primary process is GMAW, commonly known as MIG/MAG welding. It is suitable for productive welding applications and fabrication work.

SMAW / MMA

The machine also supports MMA or stick welding, providing additional flexibility for industrial welding operations.

GTAW / TIG

The MIG 402i can also be used for TIG welding applications within its specified operating range.

Industrial Applications

The ESAB MIG 402i Welding Machine 400 Amps is specified for several demanding industries and applications, including:

Structural steel fabrication
Heavy fabrication
Shipbuilding
Offshore yards
Civil construction
Engineering workshops
Industrial fabrication
Equipment manufacturing
Repair and maintenance
General industrial welding

Its high-current output and 100% duty-cycle rating make it suitable for applications where continuous welding capability is important.

ESAB MIG 402i Specifications

Specification	Details
Brand	ESAB
Model	MIG 402i
Product Type	MIG Welding Machine
Technology	IGBT Inverter
Input Voltage	415 V +15/-20%, 3 Phase, 50/60 Hz
MIG Current Range	30–400 A
MMA Current Range	20–400 A
TIG Current Range	20–400 A
MIG Voltage Range	15.5–34 V
MMA Voltage Range	21–36 V
TIG Voltage Range	10.8–26 V
Welding Output	400 A @ 100% Duty Cycle
Wire Feeder	4-Roll
Wire Feed Speed	1.5–20 m/min
Wire Diameter	0.8–1.2 mm
Open Circuit Voltage	70 V
Power Factor	0.91
Efficiency	90%
Rated Input Power	17.8 kVA
Enclosure Class	IP21S
Insulation Class	H
Standard	IEC 60974-1
Dimensions	615 × 290 × 510 mm
Weight	31.5 kg

Specifications are based on ESAB’s current India product information.

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ESAB MIG 402i Welding Machine 400 Amps | Industrial MIG Welder