Kemppi Master S 400A Celluosic MMA Arc Welder

400A 3Phase Stick Welder
  • Now £2,456.00 (ex. VAT)
  • (FREE UK Delivery)
  • RRP £3,070.00 (ex. VAT)
Item in Stock   |   Usually dispatched within 24 hours

Master S series MMA power sources are designed for high-performance professional welding, offering compact, robust and portable MMA power solutions with optimum energy efficiency.

A perfect partner for heavy-duty MMA welding where the ease of use, reliability and durability are paramount. 

The powerful 400 amp power sources provide reliable welding results with efficient ignition.

Suitable for use with a wide voltage network, Master S also integrates Voltage Reduction Device (VRD) for increased safety at work.


  • Hot start and arc force adjustment for optimised starts and arc control with alternative electrode types, guaranteeing flawless and stable weld pool control every time.
  • Antifreeze cuts off the power and protects the electrode if sticking occurs during welding
  • Contact ignition (Lift TIG) in DC TIG
  • Arc gouging
  • Parent power supply CC/CV for Kemppi voltage-sensing wire feed systems and in-line TIG solutions.
  • Including cellulose welding characteristics

Master S 400 SPEC

Product code 632140001

Connection voltage 3~ 50/60 Hz 380 - 440 V ±10%

Fuse (delayed) 25 A

Open circuit voltage in VRD mode < 35 V

Output (TIG) 60% ED 400 A/26.0 V

Output (TIG) 100% ED 310 A/22.4 V

Output (MMA) 60% ED 400 A/36.0 V

Output (MMA) 100% ED 310 A/32.4 V

Open circuit voltage 80 – 95V

Stick electrode sizes 1.6...6.0 mm

Operating temperature range -20…+50 °C

External dimensions LxWxH 570 × 270 × 340 mm

Weight (no accessories) 20.5 kg

Degree of protection IP23S 

Please contact us for our Delivery & Returns Policy

Please contact us for our Payment & Security policy.