ZX7-400 IGBT Inverter MMA Welding Machine

The ZX7-400 is a high-performance 400A industrial MMA welding machine. It uses advanced soft switch technology for high efficiency and low power consumption. This machine works with 3-phase 380V power and can handle voltage changes up to ±20%.

It provides a stable arc and precise welds. The machine supports all electrode types up to 5.0mm diameter. It includes key safety features like overcurrent, overheating, and over/under voltage protection.

The digital display shows current and voltage clearly. You can preset the welding current. Special functions allow adjustment of arc-ignition current and thrust current. This prevents the electrode from sticking to the workpiece.

Weighing only 35kg, it is compact and portable with a convenient handle. An optional remote control box is available for easier operation. This machine is built for reliable performance in demanding professional environments.

Features & Benefits

Advanced Technology: Uses soft switch technology. This provides high efficiency and reduces power consumption.
Stable Performance: Delivers a very stable electric arc. This creates a quiet molten pool and produces fine, high-quality welds.
Comprehensive Protection: Built-in systems protect against overcurrent, overheating, and over/under voltage. This ensures operational safety and machine durability.
User-Friendly Controls: Features a digital display for real-time monitoring of current and voltage. Allows for easy current presetting.
Adjustable Arc Control: Separate controls for arc-ignition current and thrust current. This optimizes arc starting and prevents the electrode from sticking.
Wide Compatibility: Works with all standard MMA electrodes up to 5.0mm. Suitable for almost all welding applications.
Robust Power Supply: Designed for 3-phase 380V input. Tolerates voltage fluctuations up to ±20%, ideal for unstable power grids.
Portable Design: Compact dimensions and light weight (35kg). Integrated handle allows for easy movement between job sites.
Optional Accessory: A remote control box can be supplied. This adds convenience for the operator.

Technical Specifications

Parameter	Specification
Model	ZX7-400
Power Supply	3-phase 380V 50Hz
Rated Input Power	17.3 kVA
Rated Input Current	26.3 A
Rated Welding Current/Voltage	400A / 36V
Duty Cycle	400A @ 60%, 315A @ 100%
No-load Voltage	70-80V
Current Adjustment Range	20 - 400A
Efficiency	≥ 83%
Dimensions (L x W x H)	590 x 306 x 510 mm
Weight	35 kg
Input Cable	3 x 4 mm² + 1 x 2.5 mm²
Insulation Class	F
Protection Class	IP21

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