TECFEED 350i EXPERT SUITCASE FEEDER

TECFEED 350 Expert – 350A CC/CV Arc Voltage MIG Wire Feeder

British Manufactured Industrial Welding Equipment

The TECFEED 350 Expert is a professional, heavy-duty 350A arc voltage wire feeder, designed and manufactured in Britain by Technical Arc, York, England. Built for demanding industrial applications, it provides exceptional MIG/MAG welding performance from almost any DC welding power source, including Constant Current (CC) and Constant Voltage (CV) machines.

Ideal for use with diesel engine driven welders, conventional welding machines and modern inverter power sources, the TECFEED 350 Expert transforms your existing DC welding machine into a versatile MIG welding system without requiring an additional power supply. The feeder is powered directly by the welding arc voltage.

Featuring advanced digital displays, remote voltage control, a rugged four-roll geared wire drive system and a robust weather-resistant polypropylene case with aluminium internal construction, the TECFEED 350 Expert is designed to deliver reliable performance in the harshest working environments.

Key Features & Benefits

• 350 Amp industrial arc voltage MIG wire feeder.
• Compatible with CC and CV DC welding power sources.
• Powered by arc voltage – no additional electrical supply required.
• Advanced digital displays showing welding voltage, welding amps and wire feed speed.
• Remote voltage adjustment facility for compatible welding power sources.
• Heavy-duty four-roll geared wire drive system.
• Swedish motor drive technology for reliable wire feeding.
• Handles solid welding wire up to 1.2mm and cored wire up to 1.6mm.
• Adjustable wire feed speed from 1–21 metres per minute.
• MIG, MAG, FCAW and MCAW welding processes.
• Suitable for gas-shielded and self-shielding flux-cored wires.
• Adjustable burn-back control.
• 2T/4T torch trigger function.
• Wire inching/jog facility.
• Standard Euro torch connection.
• Heavy-duty British-made Albright contactor.
• Tough polypropylene case with protective aluminium internal chassis.
• IP23 protection for outdoor industrial applications.
• Suitable for working temperatures from -10°C to +45°C.
• Lightweight and portable at approximately 11.5kg.

Designed for Diesel Engine Welders & Industrial Power Sources

The TECFEED 350 Expert is particularly suited to diesel engine driven welding machines from manufacturers including Lincoln, Miller, Mosa, Arcgen, Shindaiwa and Genset.

It can also be connected to conventional and inverter-based DC welding power sources, providing a practical and cost-effective solution for contractors who want MIG welding capability without purchasing a dedicated MIG welding machine.

The feeder works with both CC (Constant Current) and CV (Constant Voltage) outputs, offering excellent welding performance across a wide range of industrial applications.

Advanced Expert Digital Control System

The TECFEED 350 Expert features twin digital displays providing clear readings of welding voltage, welding current and wire feed speed.

Welding voltage is continuously displayed, while the second display shows the selected wire feed speed before welding and automatically changes to display welding amps during welding.

An additional remote voltage control knob allows welding voltage to be adjusted directly from the feeder when connected to a compatible power source remote control circuit.

This makes the TECFEED 350 Expert an excellent choice for professional welders who require accurate control of their welding parameters.

Rugged Four-Roll Wire Drive System

A powerful four-roll geared wire drive system provides consistent and reliable wire feeding, even when using longer MIG welding torches or larger diameter flux-cored wires.

The feeder is supplied as standard with 1.0/1.2mm dual-groove V rollers for solid welding wire. Alternative drive rollers are available to accommodate different wire sizes and types.

Built for the Harshest Industrial Environments

Constructed using a tough polypropylene outer case and a strong internal aluminium chassis, the TECFEED 350 Expert is designed to withstand demanding industrial conditions.

Its enclosed construction protects the internal control PCB, contactor, gas solenoid and wiring from dust, moisture and general site conditions.

Compact, lightweight and easy to transport, it is ideal for offshore welding, shipyards, quarries, construction sites, agricultural applications, structural steel fabrication and general industrial welding.

Technical Specifications – TECFEED 350 Expert

• Maximum welding current: 350A
• Duty cycle: 350A at 60%
• Welding voltage range: 14–50V
• Maximum open circuit voltage: 110V DC
• Wire feed speed: 1–21m/min
• Solid wire diameter: 0.6–1.2mm
• Cored wire diameter: 0.9–1.6mm
• Weight: Approximately 11.5kg
• Dimensions: 210mm W x 560mm L x 420mm H
• Protection rating: IP23
• Operating temperature: -10°C to +45°C
• Wire spool capacity: 15kg / 300mm

TECFEED 350 Expert – Professional British-made arc voltage wire feeding technology, built to work hard wherever you need to weld.

TECFEED 350 Expert – Frequently Asked Questions

1. What is the TECFEED 350 Expert?

The TECFEED 350 Expert is a professional 350A arc voltage MIG wire feeder manufactured by Technical Arc in York, England. It converts compatible DC CC or CV welding power sources into a versatile MIG/MAG welding system.

2. Does the TECFEED 350 Expert require an external power supply?

No. The TECFEED 350 Expert is powered directly by the welding arc voltage, so no additional electrical supply is required.

3. Can the TECFEED 350 Expert work with diesel engine welders?

Yes. It is designed to work with many diesel engine driven welding machines, including Lincoln, Miller, Mosa, Arcgen, Shindaiwa and Genset models, provided they have a suitable DC output.

4. Is the TECFEED 350 Expert compatible with CC and CV welding machines?

Yes. The TECFEED 350 Expert operates with both Constant Current (CC) and Constant Voltage (CV) DC welding power sources. CV is preferred for the best overall MIG welding performance.

5. What is the maximum welding current?

The TECFEED 350 Expert is rated at 350 amps with a 60% duty cycle.

6. What welding processes can the TECFEED 350 Expert perform?

It supports MIG, MAG, FCAW and MCAW welding processes, including gas-shielded solid wires and self-shielding flux-cored wires.

7. What size welding wire can it handle?

It accommodates solid welding wire from 0.6mm to 1.2mm and cored welding wire from 0.9mm to 1.6mm.

8. Does the TECFEED 350 Expert have digital displays?

Yes. It features twin digital displays showing welding voltage, welding current and wire feed speed. The wire speed display automatically changes to show welding amps during welding.

9. Can I adjust the welding voltage from the wire feeder?

Yes. The Expert model includes a remote voltage adjustment control. This can be connected to a compatible remote control circuit on your welding power source using the appropriate connection cable and plugs.

10. What is the advantage of the four-roll wire drive system?

The heavy-duty four-roll geared wire drive provides consistent, reliable wire feeding and helps maintain a stable welding arc, particularly when using longer torches and flux-cored welding wires.

11. Can I use gasless welding wire?

Yes. The TECFEED 350 Expert supports self-shielding flux-cored welding wires, allowing gasless welding applications. It can also be used with conventional gas-shielded MIG wires.

12. Is the TECFEED 350 Expert suitable for outdoor use?

Yes. It has an IP23 protection rating and a tough polypropylene case with aluminium internal construction. The side door seals to IP55 to help protect the wire spool and internal components from the elements.

13. Is the TECFEED 350 Expert suitable for offshore and site welding?

Yes. Its compact, portable and rugged construction makes it ideal for offshore work, shipyards, quarries, construction sites, agricultural applications, structural steel fabrication and industrial maintenance.

14. What is the maximum open circuit voltage it can withstand?

The TECFEED 350 Expert is designed to operate with welding power sources having up to 110V DC open circuit voltage. Each unit is factory tested to 160V to help ensure reliability.

15. What size wire spool does it accept?

It accepts standard 15kg welding wire spools with a maximum diameter of 300mm.

16. Does the TECFEED 350 Expert have a wire inching facility?

Yes. It includes a wire inching/jog switch, allowing the operator to feed welding wire through the torch without switching on welding power.

17. Does it have a 2T and 4T torch trigger function?

Yes. The internal 2T/4T switch allows the operator to select normal torch trigger operation or latching operation for longer welding runs.

18. What is the difference between the TECFEED 350 and TECFEED 350 Expert?

The TECFEED 350 Expert includes twin digital displays for welding voltage, welding amps and wire feed speed, together with a remote voltage control facility. The standard TECFEED 350 has basic front panel controls without the Expert digital display system.

19. How much does the TECFEED 350 Expert weigh?

The TECFEED 350 Expert weighs approximately 11.5kg, making it highly portable for industrial and site welding applications.

20. Are spare parts available for the TECFEED 350 Expert?

Yes. Technical Arc guarantees availability of spare parts and components for a minimum of 15 years from purchase, providing excellent long-term support.

21. Where is the TECFEED 350 Expert manufactured?

The TECFEED 350 Expert is designed and manufactured by Technical Arc in York, England. It is British-made industrial welding equipment built for demanding professional applications.

22. Can I connect the TECFEED 350 Expert to any welding machine?

It is designed to connect to a wide range of DC CC and CV welding power sources. However, compatibility depends on the machine's output voltage, open circuit voltage, connections and remote control facilities. Contact Technical Arc if you need advice about a particular welding machine.

23. Can the TECFEED 350 Expert weld thin materials?

Yes, particularly when connected to a CV welding power source. When using a CC power source, thinner materials can be more challenging, so correct wire diameter and welding settings are important. Typically, 2–3mm material upwards can be welded using 0.8mm wire on a suitable CC machine.

24. Why choose the TECFEED 350 Expert?

The TECFEED 350 Expert combines British manufacturing, advanced digital controls, a heavy-duty four-roll wire drive, excellent portability and compatibility with a wide range of DC welding power sources. It is an ideal solution for professionals needing reliable MIG welding capability in demanding working environments.