Description
LORCH X 350 PST
Advanced MMA Welding with Automatic Polarity Switching
The LORCH X 350 PST is a high-performance MMA (stick) welding machine designed for the toughest site environments. Featuring Polarity Switch Technology (PST), this model allows for automatic polarity change (DC+ ↔ DC–) at the push of a button—no more manual cable swapping.
⚙️ Key Features
âś… Polarity Switch Technology (PST)
Switch between electrode-positive (DC+) and electrode-negative (DC–) automatically, especially useful when welding with cellulose or specialty electrodes.
âś…ControlPro Interface
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- Advanced digital control panel offering precise setting and monitoring of welding parameters, including:
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- HotStart
- Anti-Stick
- Arc-Force
- Pulse MMA
- TIG with ContacTIG
- MicorUp for upward TIG welding
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âś… MicorBoost Technology
Delivers instant extra voltage when needed, ensuring a more stable arc and higher arc force when working with demanding electrodes.
âś… Rugged Construction for Job Sites
Drop resistance up to 60 cm
IP34S protection class
Ideal for unstable power grids and generator use
| Â Specification | Details |
|---|---|
| Â Welding Processes | MMA (Stick), TIG DC (Contact ignition) |
|  Output Range | 10 – 350 A |
|  Duty Cycle (40°C) | 100% @ 230 A • 60% @ 280 A • 35% @ 350 A |
|  Electrode Diameter | 1.5 – 8 mm (rutile, basic, cellulose up to 6 mm) |
| Â Polarity Switching | Automatic (No need to reconnect cables) |
| Â Control Interface | ControlPro with Pulse and MicorUp |
| Â Additional Features | MicorBoost, HotStart, ArcForce, Anti-Stick, TIG |
|  Dimensions & Weight | ~476 × 215 × 345 mm • ~20.2 kg |
|  Power Supply | 3-phase 400 V • 25 A fuse |
| Â Protection Class | IP34S (splash- and dust-resistant) |
Applications
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- Heavy-duty construction and infrastructure welding
- Pipe welding, repair, and structural work
- Projects requiring fast polarity switching for electrode types
- Occasional TIG DC tasks on-site
