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Lincoln Flextec 350X PowerConnect Tweco - K4273-1

SKU: K4273-1
$7,958.87

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The Lincoln Flextec 350X PowerConnect Tweco - K4273-1 is a versatile, multi-process welder with automatic voltage adjustment, CrossLinc® technology, and compatibility with a variety of wire feeders, designed for reliability in demanding jobsite environments.

Overview
Lincoln Flextec 350X Power Connect Tweco - K4273-1

The Lincoln Flextec 350X PowerConnect Tweco model represents the ultimate in welding versatility, combining multi-process capabilities with unparalleled input power flexibility. This innovative system automatically adapts to any available input voltage from 200V to 600V, in either single-phase or three-phase configurations, eliminating the need for manual reconnection when moving between job sites with different power supplies. The PowerConnect technology continuously monitors incoming voltage and self-adjusts for optimal performance, allowing welders to focus on productivity rather than power source configuration.

Building on the proven Flextec platform, the 350X PowerConnect supports a comprehensive range of welding processes including Stick, TIG, pulsed and CV MIG, and carbon arc gouging. The system includes built-in pulse programs for carbon steel, stainless steel, metal core, and aluminum applications when paired with compatible Power Feed ArcLink wire feeders. This exceptional process flexibility makes the Flextec 350X PowerConnect suitable for diverse applications across construction, fabrication, and industrial environments.

The Flextec 350X PowerConnect features Lincoln's innovative CrossLinc Technology as standard, enabling remote control over welding parameters without additional control cables when used with compatible accessories. The system's comprehensive connectivity supports virtually all Lincoln wire feeder types, including CrossLinc, 14-pin analog, 5-pin ArcLink digital, and across-the-arc models. Based on the same field-proven platform as previous Flextec machines, this model delivers exceptional reliability even in extreme environments, with lab and field testing confirming its durability for demanding applications.

Key Features

  • PowerConnect technology automatically adapting to any input voltage from 200-575VAC, single or three-phase, 50 or 60Hz.
  • Built-in pulse programs for carbon steel, stainless steel, metal core, and aluminum when used with Power Feed ArcLink feeders.
  • Comprehensive process flexibility supporting MIG, TIG, Stick, Flux-Cored, and Carbon Gouging applications.
  • Universal feeder compatibility with CrossLinc, 14-pin analog, 5-pin ArcLink digital, and across-the-arc wire feeders.
  • CrossLinc Technology enabling remote control without additional control cables for streamlined operations.
  • Tweco style welding output connections providing quick, secure coupling of welding cables.
  • Field-proven reliability based on the established Flextec platform with extensive testing in extreme environments.
  • Portable design facilitating easy transport between diverse job sites with varying power configurations.
  • Intuitive interface simplifying setup and operation for improved productivity across applications.

Specifications

Product Weights & Dimensions
Dimensions (H x W x D) 17 in x 13 in x 24 in (432 mm x 330 mm x 609 mm)
Net Weight 84 lbs (38.1 kg)
General Specification
Machines Processes Stick (SMAW)
Gouging (CAC-A)
Flux-Cored (FCAW)
TIG (GTAW)
MIG (GMAW)
Pulsed MIG (GMAW-P)
Input Voltage 200-600/1/3/50/60
Input Current 3 Phase: 350A/34V/60%, 208-220/220-230/380-415/460/575, 45/40/23/19/15
1 Phase: 350A/34V/60%, 380-415/460/575, 39/32/26
1 Phase: 300A/32V/60%, 200-208/220-230, 62/56
Input Hertz 50/60
Input Phase 1/3
Input Power 3 Phase, 200-208/220-230/380-415/460/575 - 50/60 Hz
1 Phase, 380-415/460/575 - 50/60 Hz
1 Phase, 200-208/220-230 - 50/60 Hz
Output Range 3 Phase 200-600V, 5-425A, Max OCV: 80V DC
1 Phase 380-575V, 5-425A, Max OCV: 80V DC
1 Phase 200-230V: 5-350A Max OCV 67V DC
Machine Technologies & Connections
Output Range by Mode 5-425
Machines Communication Technology analog
digital
CrossLinc
ArcLink
Wire Feeder Supply Voltage 40VDC
Amphenol Pins (type of connector) 5
14
12
Work Lead Connector Type Tweco
Application
Typical Application Cross Country Pipeline
Construction & Field Erection
General Fabrication
Heavy Equipment
Heavy Fabrication
Structural Fabrication
Warranty
Warranty 3 Years
Specifications
FeatureValue
Typical Applications Cross Country Pipeline
Construction & Field Erection
General Fabrication
Heavy Equipment
Heavy Fabrication
Structural Fabrication
Processes Stick (SMAW)
Gouging (CAC-A)
Flux-Cored (FCAW)
TIG (GTAW)
MIG (GMAW)
Equipment Classification Heavy Industrial
Welding Technology Inverter/Chopper
Product Height (in) 17
Product Height (mm) 432
Product Width (in) 13
Product Width (mm) 330
Product Length (in) 24
Product Length (mm) 609
Product Weight (lb) 84
Product Weight (kg) 38.1
Machines Processes Stick (SMAW);Gouging (CAC-A);Flux-Cored (FCAW);TIG (GTAW);MIG (GMAW);Pulsed MIG (GMAW-P)
Max Rating 425A
Input Voltage 200-600/1/3/50/60
Input Current 3 Phase: 350A/34V/60%, 208-220/220-230/380-415/460/575, 45/40/23/19/15;1 Phase: 350A/34V/60%, 380-415/460/575, 39/32/26;1 Phase: 300A/32V/60%, 200-208/220-230, 62/56
Input Hertz 50/60
Input Phase 1/3
Input Power 3 Phase, 200-208/220-230/380-415/460/575 - 50/60 Hz ;1 Phase, 380-415/460/575 - 50/60 Hz;1 Phase, 200-208/220-230 - 50/60 Hz
Output Range 3 Phase 200-600V, 5-425A, Max OCV: 80V DC;1 Phase 380-575V, 5-425A, Max OCV: 80V DC;1 Phase 200-230V: 5-350A Max OCV 67V DC
Rated Output 3 Phase 200-600V: ;350A/34V/60%;300A/32V/100% ;1 Phase 380-575V: ;350A/34V/60%;300A/32V/100%;1 Phase 200-230V: ;300A/32V/60%;280A/31V/100%
Includes
  • (1) Flextec® 350X
  • (1) Input Power Cable 8.5 ft 4 Conductor/ 8 AWG
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