WELDCLASS ULTRA 155M MIG Welder – 150A | Gas & Gasless MIG | Synergic Control | 10A Plug | WC-155M

Compact European-Made Synergic MIG Welder for Light Fabrication, Repairs and Workshop Use

Supply Solutions Group supplies the WELDCLASS ULTRA 155M MIG Welder (Part Number WC-155M) for welding, fabrication, maintenance, automotive repair, farm work and general workshop applications throughout Australia.

The WELDCLASS ULTRA 155M is a compact and highly portable inverter MIG welder designed to make quality MIG welding straightforward for hobbyists and occasional users. Manufactured in Italy to Weldclass specifications, the machine delivers up to 150A MIG output while weighing only 9kg, making it easy to transport between workshops, garages and maintenance locations.

A major feature of the ULTRA 155M is its easy-to-use Synergic MIG control. Rather than requiring the operator to independently balance voltage and wire-feed speed, the single control can be adjusted according to material thickness and the machine automatically establishes suitable welding parameters.

The machine supports both gas-shielded MIG welding with solid wire and gasless MIG welding with flux-cored wire. It can accommodate 0.6mm, 0.8mm and 0.9mm wire configurations and accepts both compact 1kg D100 spools and larger 5kg D200 spools. Maximum mild-steel MIG welding capacity is approximately 5mm.

For convenient operation from common Australian power outlets, the ULTRA 155M comes fitted with a 240V 10A plug. It is also generator compatible, with Weldclass specifying a minimum generator capacity of approximately 7kVA and recommending 8kVA or greater.

The standard package includes the machine, 2m BZL 15 direct-connect MIG torch, 1.8m earth lead, drive roller for 0.6/0.8/0.9mm solid and gasless wires, input lead and fitted 10A plug.

Important procurement note: Weldclass now lists the ULTRA 155M as a discontinued/phased-out model, with the FORCE 132MST and FORCE 160MST identified as recommended replacement models. This listing is therefore most appropriate for remaining stock, replacement requirements or customers specifically seeking the WC-155M.

Product Type

• Product Type: Inverter MIG Welder
• Maximum Output: 150A
• Welding Processes: Gas MIG & Gasless MIG
• Input Power: 240V
• Plug: 10A
• Part Number: WC-155M
• Best For: Hobby, Maintenance & Occasional Fabrication

Key Features

• Genuine WELDCLASS ULTRA Series welder
• Part Number: WC-155M
• Maximum 150A MIG output
• Gas and gasless MIG capability
• Easy-to-use Synergic MIG control
• Automatically coordinates voltage and wire-feed settings
• Welds mild steel up to approximately 5mm
• Suitable for 0.6–0.9mm solid mild-steel wire
• Suitable for 0.8–0.9mm gasless flux-cored wire
• Suitable for 0.8mm stainless-steel wire
• Accepts 1kg and 5kg wire spools
• Compact 9kg machine weight
• 240V single-phase input
• Standard 10A plug fitted
• Generator compatible
• Manufactured in Italy
• Compact and highly portable design

Technical Specifications

Standard Package Includes

• WELDCLASS ULTRA 155M welding machine
• BZL 15 2m direct-connect MIG torch
• 1.8m earth lead
• 0.6/0.8/0.9mm drive roller
• Input power lead
• Fitted Australian 10A plug

Typical Applications

• Light steel fabrication
• General workshop repairs
• Automotive repairs
• Trailer repairs
• Farm maintenance
• Home workshop projects
• Gates and fencing
• Equipment repairs
• DIY fabrication
• Maintenance departments
• Light structural projects
• General steelwork

Suitable Industries

• Automotive
• Agriculture
• Maintenance
• Light fabrication
• Construction support
• Mechanical workshops
• Property maintenance
• General engineering
• Education and training
• Home and hobby workshops

Why Choose the WELDCLASS ULTRA 155M?

The ULTRA 155M was designed around simplicity and portability. Its synergic control system removes much of the complexity associated with manually balancing MIG voltage and wire speed, making it particularly suitable for occasional welders and operators who want reliable results without complicated setup.

At only 9kg, the machine is highly portable, while the standard 10A power connection means it can be operated from suitable conventional Australian outlets without requiring a dedicated 15A connection. The ability to run both gas and gasless wire further increases its versatility for workshop and field repair applications.

Weldclass specifically describes this model as intended for hobbyist and occasional use. For regular trade, field or site welding, heavier-duty Weldclass machines with Euro-connect torches and more substantial wire-drive systems are recommended.

Why Buy from Supply Solutions Group?

Supply Solutions Group is an Indigenous-owned Australian supplier of welding equipment, industrial consumables, PPE and workshop products, providing procurement support and Australia-wide delivery.

Benefits of Partnering with Supply Solutions Group

• Australia-wide supply capability
• Indigenous-owned and operated business
• Welding equipment and consumable sourcing
• Procurement support services
• Trade account options
• Bulk purchasing solutions
• Workshop and industrial supply capability
• Product sourcing assistance
• Responsive customer service
• Ongoing industrial supply arrangements

Frequently Asked Questions

Can the ULTRA 155M weld with and without shielding gas?
Yes. It supports conventional MIG welding using solid wire and shielding gas, as well as gasless MIG welding using self-shielded flux-cored wire.

What is the maximum welding output?
The machine provides up to 150A MIG output and has a maximum stated mild-steel MIG capacity of approximately 5mm.

Does it require a 15A power outlet?
No. The ULTRA 155M is supplied with a 240V 10A plug fitted, making it convenient for workshops and locations with suitable standard 10A outlets.

What wire sizes can it use?
Weldclass specifies solid mild-steel wire from 0.6–0.9mm, gasless flux-cored wire from 0.8–0.9mm, and 0.8mm stainless-steel wire.

Can it weld aluminium?
Weldclass does not recommend the ULTRA 155M for aluminium welding. A more suitable machine should be selected where aluminium MIG capability is required.

Is the ULTRA 155M still a current Weldclass model?
No. Weldclass currently lists the model as discontinued, with the FORCE 132MST and FORCE 160MST nominated as replacements.

Can it run from a generator?
Yes. Weldclass specifies a minimum 7kVA generator, with 8kVA or greater recommended.