R-Tech TIG Welder Digital AC/DC 400 Amp 415v

R-Tech TIG Welder Digital AC/DC 400 Amp 415v

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R-Tech TIG Welder Digital AC/DC 400 Amp 415v

£2,295.00 +VAT £2,754.00 Incl. VAT

Availability: In stock

Code: TIG400EXT
In stock

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£2,295.00 +VAT £2,754.00 Incl. VAT


The R-Tech TIG400EXT is a power-packed 400Amp AC/DC TIG welder with 415V input, 4 AC waveforms, 9 Job memory store, True 4 way trigger latching with pre/post gas, slope up/down and start/final amps, LED display, advanced pulse welding and remote foot pedal option and a massive 60% duty cycle

Technical Specifications


 Amperage range DC 5-400A,  AC 10-320A,   MMA 20-315A 
 Duty cycle  TIG 400A 60% - MMA 315A 35% 
 TIG 315A 100% - MMA 250A 60%
 Input voltage/amps  415v 3 Phase 22A No load voltage 70v
 Memory Stores  9 
 AC Frequency  20 - 250 Hz  
 AC Balance  5 - 90 %  
 Pulse Width  5 - 95 %  
 Pulse Frequency  AC 0.1 - 250 Hz Squarewave  
   AC .01 - 250 Hz Soft, Sine & Triangular Wave   
   DC 0.1 - 500 Hz  
 Pre flow gas  0 - 25 seconds  
 Post flow gas  0 - 50 seconds  
 Start amperage  Yes  
 End amperage  Yes  
 Slope up  0 - 25 seconds  
 Slope down  0 - 25 seconds  
 HF Start  Yes  
 Lift Start  Yes  
 MMA Arc force  0 - 100 %  
 MMA Hot start  0 - 2 seconds  
 MMA Hot start amps    0 - 100%  
 VRD  Yes - Reduces MMA OCV for user safety  
 Gross weight  34KG  
 Dimensions  660mm x 280mm x 550mm  LxWxH
 Insulation class  IP21S  
 Cooling fan  Fan-On-Demand fan cooling system for quieter operation 


Digital control panel - designed for easy use
- Control all parameters from a single button
- Easy start and finish set-up
- Store up to 9 jobs in memory

4 AC Waveforms
- Advanced Square Wave: fast cooling weld pool, deep penetration and fast travel speed
- Soft Square and Sine Wave: Lower arc noise, for a more traditional arc
- Triangular Wave: designed for thin alloys, reduces heat input

Microstart HF - improved arc starting and less interference - What is this?Ensures an ultra-clean start to your welds
Lift Tig start option when welding near sensitive electronics - Automotive ECUs etc
Full 4-way functioning with control of pre/post flow gas, initial/final amps, slope up/down
Generator Friendly - Recommended minimum of 12KVA
LED display for preset and actual amperage
MMA Anti-Stick, Arc-Force & Hot Start technology

Package contents:
TIG400 Digital Tig Welder, Remote foot pedal, 4M WP26 Tig Torch, 3M Earth Lead, MMA lead, Argon Regualtor, Gas hose, Torch consumables pack.

2 year collect and return UK warranty - What is this?in the unlikely event of machine failure, R-Tech will pay to collect, repair and return the Tig welder to you quickly- No quibble warranty Includes a remote foot pedal worth £178.00

Download Manual

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Product review for R-Tech TIG Welder Digital AC/DC 400 Amp 415v (1)
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The service from R-Tech has been superb, from delivery, to technical questions and any accessory or spares we've required. Our unit gets heavy use and has performed excellently. So well in fact, we bought a second unit for our other workshop