Description
The Royce MMA-250S (Item No. RAC-250 / MMA-250) is a compact, highly portable IGBT inverter stick welding machine. It is designed for light steel fabrication, gate/window grill repairs, agricultural equipment maintenance, and general workshop use.
Technical Specifications
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Welding Technology: IGBT Inverter with PWM (Pulse Width Modulation) closed-loop control.
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Input Voltage: Single Phase 220V–230V AC (50/60 Hz).
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Input Capacity: 6.0 KVA to 8.7 KVA.
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Output Current Range: 20A to 250A (adjustable via digital display).
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Supported Electrode Sizes: $1.6\text{ mm}$ to $4.0\text{ mm}$ (up to $5.0\text{ mm}$ for brief light passes).
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Duty Cycle: 60% at 250A maximum output; 100% at normal continuous working currents.
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Efficiency: ~85% power efficiency rating.
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Cooling & Protection: Forced air cooling fan with built-in thermal overload protection.
Key Features
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Compact & Lightweight: Smaller chassis than the 300S and 400S models, making it very easy to move around job sites or work at heights.
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Easy Arc Starting: Integrated Hot Start functionality helps trigger the arc instantly without frequent sticking.
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Stable Power Draw: Low idle energy loss compared to traditional transformer welders, suitable for standard home and light-commercial power outlets.
Standard Accessories Included
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Electrode Holder with cable & quick dinse connector.
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Earth Clamp with ground cable.
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Simple handheld face mask.
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Chipping hammer & wire brush tool.
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