Sunstone PA250i Micro TIG Welder
Experience the highest level of welding performance with the Sunstone PA250i, the most powerful pulse arc welder in Sunstone’s lineup. Delivering up to 250 joules of controlled energy, the PA250i provides unmatched strength, precision, and versatility for demanding production environments.
Designed for shops, semi-automated systems, or fully automated production lines, the PA250i adapts seamlessly to any workflow. Its advanced digital energy control, ultra-small heat-affected zone, and precise weld placement make it ideal for welding small, delicate, or thin metal components with outstanding consistency.
Compact yet powerful, the PA250i includes a user-friendly touchscreen interface, low-maintenance design, and exceptional repeatability—making it the go-to solution for high-performance micro TIG pulse arc welding.
Key Benefits
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250 Joules Max Energy – The most powerful pulse arc welder Sunstone offers
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Minimal Heat-Affected Zone – Protects delicate components
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Precise Weld Placement – Easily position welds exactly where needed
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Versatile Material Compatibility – Welds a wide range of metals, including dissimilar combinations
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User-Friendly Operation – Simple touchscreen interface and microscope compatibility
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High Consistency & Repeatability – Ideal for production shops
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Compact, Workbench-Friendly Size
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Low Machine Maintenance Requirements
Sunstone’s PA Micro TIG Welder Provides
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Welds extremely thin materials down to 0.0005" (0.0127 mm)
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Three configurations available: Stylus Only, Weld Head, or CNC Table
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Digital waveform graphs: energy waveforms, histograms, and more
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PLC-Ready with 5 outputs / 2 inputs
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CNC compatible for automated production
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127 remote schedules for quick setup
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Import/export weld settings
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Lock-out mode to secure production parameters
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Built-in alarms and warnings
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Onboard training videos
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WiFi-enabled software updates
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1-year manufacturer’s warranty