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Mosa CT 350 KSX – Diesel Engine Driven Welder Generator

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  • AC generator Output – Multi Voltage 10 kVA
  • Welding Output – 350 Amps
  • Diesel, Air Cooled Engine



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The CT 350 KSX is a Diesel Powered Welder Generator by Mosa.  This machine is a multi process welder, suitable for Stick, MIG (Using the optional WF4 Wire Feed Unit) and TIG welding, capable of up to a 350 amp DC welding output.  It has a dual range function and an open circuit voltage of 70V. Incorporated in this model is a 12V battery, a battery charge indicator and this machine benefits from an electric start.

The CT 350 KSX CC/CV is able to weld any type of welding electrodes up to 6mm and takes full advantage of the engines power output using MOSAs signature “Power Optimizer” technology. With the ” Power Optimizer ” it is possible to ensure stable and optimal operation in all the welding conditions, exploiting the full power of the engine. This is a specific control technique aimed at preventing the engine overload when working near to its power limit.

The engine driven Mosa welder, is a Constant Current (CC), Constant Voltage (CV) professional machine with electronic control of the welding current. CC and CV welding output modes are selectable:

  • In Constant Current (CC) Mode, it is possible to choose between a characteristic with adjustable arc force, suitable for MMA and TIG welding (With Scratch Start).
  • In Constant Voltage (CV) mode it is possible to MIG weld using the optional WF4 Mosa Wire Feed Unit. Capable of Wire welding both Solid and Flux Cored wires.

An advantage of this welder is its’ diesel , a Kholer engine runs to a high specification and is very efficient with a fuel consumption of 2.5 litres per hour. The engine output is 14kw (19 hp) and has the capacity to generate an accessible speed of 3000 rpm.

With a weight of 345kg, this MOSA Diesel Welder; CT 350 KSX is also EEC noise compliant.

Equipped with all the usual CT series features including:

  • Voltage reduction device which limits the welding voltage at terminals to 20v maximum, when not in use.
  • Adjustable Electronic Arc Force – Stepless Control to Increase Electrode “Dig-Force”
  • Emergency Stop Button
  • Auto Idle
  • Chopper Technology to provide superior weld quality and a stable arc

The Kholer engine and asychronous alternator delivers a welding output or a single phase generator output of up to 10kVA three phase output. Central to the success of Mosa Welder Generators is this Mosa asynchronous welding alternator. This brushless alternator designed and manufactured in house by Mosa, offers excellent welding characteristics and simultaneous AC auxiliary power and requires no maintenance as there are no brushes to wear and the solid rotor has no windings.


Also available is an optional remote welding control allowing welding current adjustment up to 20 metres from the welder.


Suitable for a wide range of uses including mobile welding, site fabrication, maintenance and pipe welding.

In accordance with CE regulation


TBWS are able to access an impressive back catalogue of spares, parts and accessories for the Mosa range. This, coupled with the best build quality of Mosa machines, makes for machines that are built to last through servicing and repairs if required.



  • Current range, Continuous:                      20 – 350A
  • Duty cycle:                                                  interment 300A @ 60%   250A @ 100%
  • Open circuit voltage:                                 70 V

Dimensions L x W x H (mm)                               1230 x 690 x 925 (without wheels and towbar)
Displacement/Cylinders                                      2/954 cm3
Engine Type                                                       Kholer Diesel, air-cooled, 4 stroke
Fuel Consumption                                              2.5 l/hr
Insulating Class                                                  H
Protection IP                                                       23
Running Time                                                     15 hours @ 60% load

Three phase                                                       10 kVA / 400v / 14.4A
Single Phase                                                       5 kVA/230V/21.7A
Tank capacity                                                      38 litres
Weight (kg)                                                          345 (without wheels and towbar)


CAN BE PURCHASED AS A SITE READY PACKAGE INCLUDING; CTM Wheels & Handles Kit, Light Reactive Welding Helmet, 10 Mtr Welding Lead Set, Chipping Hammer, Wire Brush & Welding Gauntlets.



Additional extras available:

Welding Cable Set

Wheels and Handles Kit

Two Wheel Site Tow, Road Tow

Remote Control

Service Filter Kit.


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