T 250
A very special class of mobile TIG welding performance.
  • Operation concepts: BasicPlus, ControlPro
  • 5 - 250 A
  • ED 60% at 40°C: 200 A
  • DC and AC/DC versions available
T 250

Perfect aluminium welding thanks to AC version.

Aluminium TIG welding requires alternating current (AC). Since aluminium is a very good conductor of heat, a higher current is required for every additional millimetre of material thickness. Material thicknesses far exceeding 8 mm can be handled easily by the T 250 welding units. Beyond this, the AC mode optimises the current form for greatest stability, outstanding cleaning effect of the aluminium oxide layer and reduced noise. The integrated automatic cap shaping function ensures perfect tungsten shaping as well.

Improved welding quality thanks to MACS.

The additional special Lorch MACS (ModulatedACSystem) process improves welding quality by way of targeted heat application. MACS provides outstanding results, in particular when joining different material thicknesses.

Mobile at the construction site.

The T 250 is compact enough to fit your TIG equipment in the optional protective assembly trolley. Your entire system, including its cables, tools, helmet, and gloves will be safely stowed and can be pulled along with you in its case.

Pulsing and fast pulsing at up to 2 kHz.

The integrated pulse and fast pulse function at up to 2 kHz is particularly suitable for welding thin sheets. It facilitates outstanding weld pool control for perfect results even with difficult welding tasks.

Energy efficiency at full power.

The Lorch T 250 features state-of-the-art power electronics with stand-by function to reduce your costs while achieving perfect welding results.

Longevity.

At barely more than 16 kg, the T 250 is perfectly equipped for mobile use. The special drop protection keeps the housing safe at falls from a height of up to 60 cm. The standard protective cover of the control panel and the integrated dust filter ensure robustness and durability even in rough working conditions.

MMA welding.

The T 250 is also suitable for MMA welding. The arc-force control comes in when welding, ensuring arc stability and perfect material transition. The electrode will not stick or anneal due to the anti-stick system.

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

TIG welding
Welding range 3~ 400 V: [A] 5 - 250
Voltage range: [V] 10.2 - 20
TIG Duty cycle AC 400 V
Duty cycle AC 100% (40°c): [A] 175
Duty cycle AC 60% (40°c): [A] 200
Duty cycle AC at max. current (40°c): [%] 35
TIG Duty cycle DC 400 V
Duty cycle DC 100% (40°c): [A] 175
Duty cycle DC 60% (40°c): [A] 200
Duty cycle DC at max. current (40°c): [%] 35
Electrode welding
Welding range 400 V: [A] 10 - 200
Voltage range: [V] 20.4 - 28
Weldable electrodes: [Ø in mm] 1.5 - 5
Electrode duty cycle
Duty cycle 100% (40°c): [A] 170
Duty cycle 60%: [A] 185
Duty cycle at max. current (40°c): [%] 55
Process-independent data
Open circuit voltage: [V] 61 - 72
Mains 400 V
Mains voltage 3~ (50/60 Hz): [V] 400
Mains fuse 3~ (50/60 Hz): [A] 16
Positive mains tolerance 3~ (50/60 Hz): [%] 15
Negative mains tolerance 3~ (50/60 Hz): [%] 15
Mains plug
Mains plug: CEE 16
Standards and approvals
Protection class: IP23S
Insulation class: F
Norm/Standard: EN 60974-01
Designation/Certification: CE, S
Cooling type
Cooling type: Gas-cooled
Dimensions length x width x height
Dimensions (LxWxH) [mm] 483 × 185 × 325
Weights
Weight: [kg] 16.3

BasicPlus

  • “3 steps and weld” operating concept
  • Simple one-button operation
  • Stepless current adjustment
  • Amperometric digital display
  • User-focused operator guidance with illuminated symbols and welding sequence control

ControlPro

  • “3 steps and weld” operating concept
  • Simple one-button operation
  • Stepless current adjustment
  • Amperometric digital display
  • User-focused operator guidance with illuminated symbols and welding sequence control
  • Tiptronic job memory for 100 welding tasks

Always the best advice: close, personal and honest.

You are interested in a Lorch welding machine but you are not sure which model is the right one for you or you have other questions? Use our Partner Finder to easily find a competent contact person near you and get personal advice.