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Cros Arc TIG AC/DC 400 – Water Cooled 400v

Cros Arc TIG AC/DC 400 – Water Cooled 400v

£3,800.00
£3,800.00 £3,800.00
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Cros Arc TIG AC/DC 400 – Water Cooled 400v
  • Cros Arc TIG AC/DC 400 – Water Cooled 400v
  • Cros Arc TIG AC/DC 400 – Water Cooled 400v
Cros Arc TIG AC/DC 400 – Water Cooled 400v

Cros Arc TIG AC/DC 400 – Water Cooled 400v

£3,800.00
£3,800.00 £3,800.00
Shipping calculated at checkout.

The Cros Arc TIG AC/DC 400 – Water Cooled 400v is a three-phase, high-duty TIG and MMA inverter package for professional bodyshop and fabrication work, supplied complete with cooler and torch for sustained high-amperage welding. Designed for serious workshop use, the Cros Arc TIG AC/DC 400 – Water Cooled 400v offers stable TIG DC for steels, full AC control for aluminium, and a practical front panel layout that suits daily use in repair centres. With a trolley-mounted power source, integrated water cooling and a 400A output at industrial duty cycles, the Cros Arc TIG AC/DC 400 – Water Cooled 400v is well suited to structural work, jig fixtures and heavier body and chassis repairs.

Key Features

  • 400A three-phase TIG power
  • AC/DC for steel and aluminium
  • Water-cooled torch package included
  • HF and lift TIG start modes
  • Comprehensive AC balance and frequency
  • Pulse, job save and MMA functions
Technical Support

Everything we sell is supported by our factory trained engineers at our premesis in Manchester or nationwide through our mobile service engineers.

Delivery + Returns

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Supply voltage

Supply

400V

Warranty

Warranty

2 years

Free delivery

Free Delivery

UK mainland delivery

Service engineers

Service

In-house engineers

Technical support

Support

0161 223 1843

📄

Technical Datasheet

Download the official manufacturer datasheet for Cros Arc TIG AC/DC 400 – Water Cooled 400v including specifications, compatibility information and technical details.

Download Cros Arc TIG AC/DC 400 – Water Cooled 400v Datasheet

Technical Features

  • Latest IGBTbased multi‑process inverter power source for stable TIG and MMA performance with good efficiency and power factor on a 400 V three‑phase supply
  • AC/DC TIG capability with both HF start and lift‑TIG modes for reliable arc initiation on aluminium, magnesium and steels without contaminating the tungsten
  • Integrated MMA (stick) welding mode with hot start and adjustable arc force to help prevent sticking and maintain a strong arc on structural and repair work
  • Water‑cooled package with matched cooler and SGT18FX torch to keep the torch cool at higher currents, improving comfort and consumable life in long welds
  • Digital volt/amp display for clear, accurate setting and live monitoring of welding parameters, useful for repeat jobs and procedure compliance
  • 2T/4T torch trigger control to suit both short tacks and long seam runs, reducing operator fatigue on continuous welds
  • Pre‑flow and post‑flow gas adjustment to protect the tungsten at arc start/finish and optimise gas usage for different materials and joint lengths
  • Adjustable up‑slope and down‑slope to ramp current in and out smoothly, reducing crater cracking and undercut on thin panels and aluminium edges
  • AC frequency control to fine‑tune arc focus and penetration on aluminium, allowing tighter beads or wider cleaning action as required
  • AC balance control to set the ratio of cleaning to penetration on oxide‑covered aluminium, useful for heavily oxidised castings versus clean extrusions
  • Start and end current adjustment so you can tailor ignition and crater‑fill behaviour for thin body panels, thicker sections or sensitive components
  • Built‑in pulse function with adjustable pulse frequency to control heat input, improve puddle control and reduce distortion, particularly on thin sheet
  • VRD (Voltage Reduction Device) for improved safety in MMA mode, reducing open‑circuit voltage when not welding in higher‑risk environments
  • Job save function allowing storage and recall of welding programmes, speeding up changeover between common materials and thicknesses in a busy shop
  • Generator‑friendly design so the set can be run from suitably rated engine‑driven generators on mobile or remote repair work
  • Trolley‑mounted power source and cooler package to keep the machine, cooler, gas bottle and accessories together and easy to move around the workshop
  • Fan‑cooled design with internal protection to help maintain duty cycle and protect the inverter when working hard in bodyshop conditions
  • Supplied with professional Parker SGT18FX‑12 TIG torch, earth lead, gas hose, foot pedal and water cooler so it is ready for workshop installation with minimal extras required
Bodyshop Equipment Engineers

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We also have some of the most experienced engineers in the industry who are able to offer full technical support on top of what the manufacturers offer.

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Specification

Input Voltage
3P-400V ±15% 50
Input Current
25A
Current Range
10–400A
Duty Cycle @ 40°C
400A @ 60%
Power Factor @ 100%
0.93
Protection Class
IP23
Insulation Class
H
Cooling
Fan
Dimensions
685 x 295 x 560mm
Weight
40kg
Standards Compliance
EN IEC 60974-1:2022 + A11:2022, EN IEC 60974-10:2021, BS EN IEC 60974-1:2022 + A11:2022, BS EN IEC 60974-10:2021
Process Modes
MMA, TIG AC
Gas Control
Pre-flow and post-flow adjustable
Arc Control Functions
Hot Start, Arc Force
Operating Modes
2T
AC Controls
AC frequency control, AC balance control
Current Controls
Start current adjustment, End current adjustment
Pulse Controls
Pulse function with pulse frequency control
Display
Digital volt
Safety Features
VRD (Voltage Reduction Device)
Mounting
Trolley mounted
Included Torch
Parker SGT18FX-12 TIG torch
Included Accessories
Earth return lead and clamp, Gas hose, Water cooler, Foot pedal
Optional Accessories
MMA lead

FAQs

Is the Cros Arc TIG AC/DC 400 suitable for professional bodyshops and fabrication work?
Yes. It is a 3-phase 400 V inverter TIG/MMA set with a 10–400 A output range, water cooling and a 400 A @ 60% duty cycle at 40°C. That makes it suitable for continuous TIG work on chassis, structural fabrication, heavy brackets and production welding in busy bodyshops and engineering workshops. It will comfortably handle mild steel, stainless and aluminium work where you need both AC and DC TIG capability.
What power supply and installation requirements does it have?
The machine is designed for 3-phase 400 V (+/-15%) 50/60 Hz supplies and draws around 25 A. In practice we recommend a suitably rated 3-phase breaker, good quality industrial sockets and cabling sized correctly by your electrician. As with any inverter TIG, a clean, stable supply is important, but the set is generator friendly provided the generator is correctly sized and regulated. BWS can advise on supply sizing and any protection needed in your workshop.
What is included in the package and what else might I need to start welding?
The package includes the TIG 400 AC/DC inverter power source, Parker SGT18FX-12 water-cooled TIG torch, water cooler, earth lead and clamp, gas hose and a foot pedal. To start working you will additionally need an argon cylinder and regulator, appropriate tungsten electrodes, filler rods for the materials you weld, and PPE. If you plan to use MMA, an MMA lead set is available as an option. BWS can supply all consumables and accessories to match your applications.
What control features does the Cros Arc TIG AC/DC 400 offer for aluminium and precision work?
For AC TIG on aluminium it provides AC frequency and AC balance control, allowing you to tune cleaning action versus penetration and arc focus. It also has pre- and post-flow gas adjustment, up- and down-slope, start and end current control, pulse with adjustable pulse frequency, plus 2T/4T torch trigger modes. For MMA it offers hot start and arc force control. The digital volt/amp display and job save function help repeat set-ups for regular repair procedures in the workshop.

Expert Advice

Paul Jones

Paul Jones says

This is a three‑phase, water‑cooled AC/DC TIG set aimed at serious fabrication and body repair on both steel and aluminium. In a workshop it typically sits on a trolley with a cooler and gas bottle, doing chassis repairs, alloy brackets, intercooler pipework, suspension components and general fabrication where you need clean, controlled welds rather than speed.

The key with a machine at this level is matching the duty cycle and cooling to your work. Long runs on thicker aluminium will quickly expose any weakness in torch cooling, gas coverage or mains supply. Make sure the workshop has a suitable 400 V supply, correct fusing, and decent gas and water connections, otherwise you will trip breakers or cook torches.

A common issue I see is poor arc starts and dirty welds caused not by the set, but by wrong tungsten choice, contaminated gas, or badly prepared joints. Set it up properly, keep the cooling circuit maintained, and this type of TIG plant will give very stable performance and predictable results shift after shift.

Paul Jones, Technical Director

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