ZX7-250 Portable DC Inverter MMA / Stick Arc Welding Machine (220V)

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ZX7-250 Portable DC Inverter MMA / Stick Arc Welding Machine (220V)
Welding Systems September 10, 2026

ZX7-250 Portable DC Inverter MMA / Stick Arc Welding Machine (220V)

Price not available

Overview

Deliver smooth, reliable welds on the go with the ZX7-250 Portable DC Inverter Arc Welding Machine. Designed around high-efficiency DC inverter technology, this ultra-compact welder is built for general steel fabrication, gate and fence repairs, site maintenance, and light structural welding tasks.

Featuring an intuitive front control panel with a real-time digital display and an adjustable current control dial, the ZX7-250 gives operators precise control over output power. With built-in thermal protection, forced air cooling, and an IP21 protection rating, it offers consistent arc performance and high efficiency in a lightweight, single-hand portable housing.

Key Features

  • Precision Output Range (40A / 21.6V to 120A / 24.8V): Delivers a stable DC welding arc ideal for smooth burn-through on sheet metal, steel tubing, and general fabrication jobs.
  • Real-Time Digital Display & Micro-Adjustment Dial: Features a clear LED digital readout paired with an adjustable current control knob for fast, accurate amperage setting.
  • Industrial Duty Cycle Rating: Rated for a 30% duty cycle at maximum 120A, 60% at 85A, and continuous 100% duty cycle at 66A for steady, uninterrupted work sessions.
  • Built-in Safety & Forced Air Cooling: Outfitted with Class F insulation, IP21 enclosure protection, internal fan-assisted cooling, and an LED warning indicator to protect against overheating.
  • Heavy-Duty Quick-Connect Terminals: High-conductivity brass terminal sockets ensure secure cable locking and minimal electrical resistance.
  • Compact & High Mobility: Rugged housing with a built-in top carry handle makes it effortless to carry up ladders, scaffold towers, or between service sites.

Technical Specifications & Net Weight

ParameterExact Specification (From Machine Nameplate)
ModelZX7-250
Welder TypeInverter DC Manual Metal Arc (MMA / Stick)
Input Voltage (U_1)220 V AC ($\sim 220\text{V}$)
Open-Circuit Voltage (U_0)56 V
Welding Current Range (I_2)40 A โ€“ 120 A
Output Voltage Range (U_2)21.6 V โ€“ 24.8 V
Duty Cycle (X)30% @ 120A (24.8V) / 60% @ 85A (23.4V) / 100% @ 66A (22.6V)
Max Effective Input Current (I_1eff)12.0 A
Max Rated Input Current (I_1max)22.0 A
Insulation Class / ProtectionClass F / IP21
Cooling MethodForced Air Cooling
Standard ComplianceGB/T 15579.1-2013
Estimated Net Weight~2.8 kg โ€“ 3.3 kg (approx. 6.1 โ€“ 7.3 lbs)
Primary ApplicationsSteel Security Gates, Metal Furniture, Automotive Patchwork, Light Fabrication