MicorMIG Pulse 300
Low-spatter welding thanks to stable and controllable pulse arc.
  • Operation concepts: BasicPlus, ControlPro
  • 25 - 300 A
  • ED 60% at 40°C: 250 A
  • Weldable wires steel Pulse steel: 0.6 – 1.2 mm Ø

Low-spatter pulse welding.

The stable pulsed arc that can be controlled very well saves rework and time for other tasks. The pulsed process warrants low-spatter welding without any time-consuming rework across the entire synergic line.

MicorBoost-technology for perfect welding results.

The innovative and patented Micorboost technology maximises power and the voltage reserve in the arc, optimising welding properties for all sheet metal as well as medium and heavy steel work. This results in outstanding welding results on steel, stainless steel, and aluminium.

EN1090 conformity + NFC technology.

Easily weld EN1090 compliantly thanks to the WPS booklet. Save some time- and cost-intensive individual tests of your welding results. The booklet contains independently certified welding instructions for all the relevant standard welding procedures. The MicorMIG Pulse 300 also keeps your parameter sets conveniently available via an NFC job card.

Future-proof by upgrade capacity.

Always just the functions you need: The NFC function makes the MicorMIG Pulse 300 welding units fully upgradeable, allowing you to subsequently install additional welding processes, welding programmes, and functions to facilitate work with NFC cards at any time, offline and without needing any external support.

Perfect quality assurance with the authorisation concept.

NFC technology allows setting up of a personalised authorisation system for welding system operation. The MicorMIG Pulse 300 allows use of NFC authorisation to ensure that only specific welders are allowed to adjust the corresponding parameters. A timed lock for the end of the working day additionally prevents unauthorised work on the device.

Outstanding price-performance ratio.

The MicorMIG Pulse 300 offers an easy switch to a fully adjustable welding system. Profit from the optimal welding properties of the MicorMIG Pulse 300 at an excellent price-performance ratio.

Energy efficiency by technology.

The Lorch MicorMIG Pulse 300 combines robust performance with efficient inverter technology and a stand-by function. This reduces costs while achieving perfect welding results. Transformers are a thing of the past.

Country-specific product variants.

Country-specific product variants are available for this Lorch welding unit. These may differ in the mains supply, the mains plug or other product features required for the country. You want to know more? Contact your local Lorch partner.

Technical data

MIG-MAG welding
Welding range 3~ 400 V: [A] 25 - 300
Voltage range: [V] 15.3 - 29
Weldable Wires Steel: [Ø in mm] 0.6 - 1.2
Weldable wires Stainless steel: [Ø in mm] 0.8 - 1
Weldable wires aluminum: [Ø in mm] 1 - 1.2
Weldable wires CuSi: [Ø in mm] 0.8 - 1
Voltage setting
Voltage setting: Continuo
MIG-MAG duty cycle
Duty cycle 100% (40°c): [A] 200
Duty cycle 60% (40°c): [A] 250
Duty cycle at max. current (40°c): [%] 45
TIG welding
Welding range 3~ 400 V: [A] 10 - 300
Voltage range: [V] 10.4 - 22
TIG Duty cycle DC 400 V
Duty cycle DC 100% (40°c): [A] 220
Duty cycle DC 60% (40°c): [A] 270
Duty cycle DC at max. current (40°c): [%] 50
Electrode welding
Welding range 400 V: [A] 10 - 300
Voltage range: [V] 20.4 - 32
Weldable electrodes: [Ø in mm] 1.5 - 8
Electrode duty cycle
Duty cycle 100% (40°c): [A] 200
Duty cycle 60%: [A] 250
Duty cycle at max. current (40°c): [%] 45
Process-independent data
Open circuit voltage: [V] 76 - 83
Feed speed standard: [m/min] 1 - 25
Mains 400 V
Mains voltage 3~ (50/60 Hz): [V] 400
Mains fuse 3~ (50/60 Hz): [A] 32
Positive mains tolerance 3~ (50/60 Hz): [%] 15
Negative mains tolerance 3~ (50/60 Hz): [%] 15
Mains plug
Mains plug: CEE 32
Standards and approvals
Protection class: IP23S
Insulation class: F
Norm/Standard: EN 60974-01
Designation/Certification: CE, S
Cooling type
Cooling type: Gas-cooled , Water-cooled
Standard cooling capacity (l/min): [kW] 1.06
Tank capacity: [l] 4.3
Dimensions length x width x height
Dimensions (LxWxH) [mm] 880 × 490 × 885
Dimensions wire feed case (LxWxH) [mm] 575 × 245 × 434
Weight: [kg] 58
Weight wire feeder case: [kg] 10.6
Weight, water cooling (filled): [kg] 13


  • “3 steps and weld” operating concept
  • Simple one-button operation
  • Stepless current adjustment
  • Digital Volt-Amperage-display
  • Automatic settings (synergy function)
  • Simple process and welding program selection
  • 7-step dynamic arc control


  • “3 steps and weld” operating concept
  • Simple one-button operation
  • Stepless current adjustment
  • Digital Volt-Amperage-display
  • Automatic settings (synergy function)
  • Simple process and welding programme selection
  • 21-step dynamic arc control
  • OLED graphic display - for display of the 3rd main parameter
  • Tiptronic job memory for 100 welding tasks


You would like to learn more? Technical data as well as details on application and equipment can be found here:

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