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Merkle MobiARC 284 cel

Manufacturer: Merkle (Germany)
Model: mobiarc 284
Technology: IGBT Inverter
Welding Processes: MMA (Stick), TIG DC (Lift-Arc)
Input Power: 400 V, 3-phase, 50/60 Hz
Product Description
The Merkle mobiarc 284 is a modern, lightweight inverter-based welding power source, designed for professional use in workshops, construction sites, assembly companies, and industrial maintenance. Thanks to its compact design and low weight of only 19 kg, it is highly portable and ideal for on-site and confined-space welding.
This unit delivers excellent welding characteristics, smooth current control, and advanced arc control functions. It is approved for welding in confined spaces and marked with the “S” safety symbol, making it suitable for demanding and safety-critical environments.
Key Features
• Advanced IGBT Inverter Technology – Efficient, compact, and reliable
• Smooth Welding Current Adjustment – Precise control for high-quality welds
• Digital Display – Clear indication of all welding parameters
• Remote Control Socket – 10-pole connector with polarity switch
• MMA Welding with Cellulosic Electrodes – Stable arc, suitable for vertical-down welding
• TIG DC Welding (Lift-Arc) – TIG welding without high-frequency ignition
• Confined Space Approved (S Symbol) – Safe operation in restricted areas
• Lightweight & Portable Design – Ideal for site work and field repairs
MMA (Stick) Welding
The mobiarc 284 is designed to weld all types of coated electrodes with diameters from 1.6 to 6.0 mm. It includes advanced arc control functions:
• Arc Force: Automatically increases welding current to prevent electrode sticking
• Hot Start: Adjustable current and time for reliable arc ignition
• Anti-Stick: Immediately cuts current if the electrode sticks, allowing easy re-ignition
• Excellent Performance with Cellulosic Electrodes
TIG Welding (DC Lift-Arc)
The unit is also well suited for DC TIG welding with filler wire using Lift-Arc ignition. A separately available TIG torch with integrated gas valve, pressure regulator, and shielding gas cylinder are required.
Applications
• Repair and maintenance
• Civil construction projects
• Agricultural equipment repair
• Assembly and installation companies
• Industrial and general fabrication
Suitable Materials
• Alloyed and unalloyed steel
• Stainless steel
• Cast iron
Technical Specifications
• Input Voltage: 400 V, 3-phase, 50/60 Hz
• Welding Current Range: 15 – 280 A
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• Welding Voltage Range: 20.6 – 31.2 V
• Duty Cycle (eta) 40 °C (10 min):
o 35% – 250 A
o 50% – 250 A
o 60% – 240 A
o 100% – 210 A
• Open-Circuit Voltage: 90 V
• Current Consumption (MMA / TIG): 14 A / 12 A
• Power Consumption (MMA / TIG): 9.7 kVA / 8.3 kVA
• Maximum Input Current (MMA / TIG): 21 A / 16 A
• Electrode Diameter: 1.5 – 6.0 mm
• Power Factor: 0.98 cosφ
• Protection Class: IP23
• Insulation Class: H
• Remote Control Interface: 10-pole connector with polarity switch
• Connection Socket: 50 mm²
• Standards: EN 60974-1, CE, “S” marking
• Dimensions (L × W × H): 495 × 210 × 450 mm
• Weight: 19.0 kg