Description
Royce MMA-450S / TIG-MMA 450
The Royce MMA-450S / TIG-MMA 450 is the heavy-duty, top-tier model in the Royce inverter welder series. Unlike the standard lower-amperage models, the 450S supports dual-process operation (MMA Stick + Lift TIG Welding) and higher power output.
Technical Specifications
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Welding Technology: Advanced IGBT Inverter with PWM closed-loop control.
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Welding Processes: MMA (Manual Metal Arc Stick) and TIG (Lift Arc TIG).
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Input Voltage: Single Phase 220V–230V AC ±15% (50/60 Hz).
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Input Capacity: 10 KVA.
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Output Current Range: 20A to 450A (stepless adjustment with digital readout).
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Electrode Diameter: $1.6\text{ mm}$ to $5.0\text{ mm}$ (supports basic, rutile, stainless steel, aluminum-compatible, and cellulose E6010 electrodes).
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Protection Class: IP21S rated with thermal overload, over-voltage, and anti-stick protection.
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Cooling: Heavy-duty internal cooling fan with forced air ventilation.
Key Features
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Dual Process Capable: Allows switching between standard MMA stick welding for thick structural steel and Lift-TIG welding for cleaner, finer seams on thinner materials or stainless steel.
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Stepless Amperage Adjustment: Smooth control knob lets you dial in the exact amperage for fine metal thicknesses or heavy-duty structural rods.
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Anti-Stick & Hot Start: Prevents the electrode from freezing to the workpiece during initial ignition or fast dips.
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High Duty Cycle & Efficiency: Designed to handle continuous heavy-duty welding tasks with minimal energy waste.
Included Accessories (Standard Kit)
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Electrode Holder with cable & quick-connect dinse plug.
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Earth Clamp with ground cable.
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Handheld face shield / welding visor.
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Wire brush & slag chipping hammer combination.





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