EACO ZX7-400S Digital Inverter Arc Welder

The EACO ZX7-400S Digital Inverter Arc Welder delivers heavy-duty manual stick performance in a portable 9.6 kg form factor. Built with an advanced digital micro-controller and IGBT module power train, it offers reliable dual-voltage single-phase operation across 220V and 380V grids.

Providing up to 240A of welding current with a 50% rated duty cycle at 220V, the ZX7-400S features independently regulated Arc Force and Hot Start timing, anti-freeze electrode protection, and high-temperature thermal shutoff. Its deep penetration arc is ideal for shipbuilding pipes, structural framing, and pressure vessel root passes.

Technical Specifications

EACO ZX7-400S Digital Inverter Arc Welder:

Input Voltage: 1-Phase AC 220V / AC 380V ±15%, 50/60 Hz
Rated Input Current: 38.5 A (220V) / 31.0 A (380V)
Rated Input Power: 8.5 kVA (220V) / 11.8 kVA (380V)
Rated Duty Cycle: 50% (220V) / 40% (380V) at 40°C
No-load Voltage: U0 = 72V / Ur = 11.3V (220V); U0 = 64V / Ur = 11.3V (380V)
Welding Current Range: 30 ~ 200 A (220V) / 30 ~ 240 A (380V)
Arc Force Range: 0 ~ 50 A
Arc Start Current: 0 ~ 100 A (Time: 0.1 ~ 3.0 s)
Insulation & Protection: Class F, IP21S
Cooling Method: Forced Air Cooling
Dimensions & Weight: 415 × 190 × 360 mm, 9.6 kg

Key Features & Capabilities

Robust 240A output for heavy structural rods up to 5.0 mm diameter
Dual-voltage input flexibility (220V single phase / 380V single phase)
Digital current pre-display with exact parameter repeatability
Built-in VRD voltage reduction device prevents electrical hazards in wet environments
Equipped with anti-sticking and thermal overload security monitoring

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