XLNT MMA300-2B IGBT ARC Inverter Welding Machine

The XLNT MMA300-2B is a compact IGBT ARC inverter welding machine designed for repair, maintenance, fabrication and general workshop welding applications.

The product is marketed as a 300A model, while the supplied technical specification lists an adjustable output-current range of 40-175A. For accurate catalogue information, 300A should be treated as the product or model designation until the physical machine rating plate confirms otherwise.

The machine supports a listed 220V/380V ±15% input at 50/60Hz. It also features 85% listed efficiency, a 0.89 power factor, Class F insulation, IP21 housing protection and a compact 4.95kg body.

The live product page highlights IGBT inverter technology, generator-compatible positioning and over-voltage, under-voltage and over-current protection. It is presented for heavy welding, maintenance, repair and fabrication.

40-175A Adjustable Welding Output

The supplied specification image lists an adjustable welding-current range of 40-175A.

The correct welding current depends on:

• Electrode diameter
• Electrode type
• Metal thickness
• Joint design
• Welding position
• Material condition
• Electrical-supply stability
• Required penetration
• Machine duty-cycle limitation

Supported electrode sizes are not provided in the supplied information and should be confirmed before adding an electrode-selection chart.

300A Model Designation

The current product page promotes the machine as a 300A model. However, the supplied technical specification lists a maximum adjustable output of 175A.

Recommended catalogue wording:

Marketed Model Amperage: 300A

Published Technical Output Range: 40-175A

Do not publish the following claims until the physical rating plate confirms them:

• Actual 300A welding output
• Continuous 300A output
• 300A at a stated duty cycle
• Rated maximum current of 300A

220V/380V Dual-Voltage Input

The supplied specification lists an input voltage of 220V/380V ±15% with a frequency of 50/60Hz. The live page also displays a 220-380V input range. 

Before operating the machine, confirm:

• Whether 220V operation is single-phase
• Whether 380V operation is three-phase
• Whether voltage selection is automatic or manual
• Recommended MCB or MCCB
• Input power cable size
• Plug and socket rating
• Earthing requirements
• Input current for each voltage mode

The machine should only be connected after its voltage and phase requirements are confirmed from the physical rating label.

Input-Current Specification Requires Verification

The supplied image appears to show a rated input current of 170A.

This value should not be published as a confirmed specification because it may represent:

• 170A exactly
• 17.0A with a missing decimal point
• A catalogue-printing error
• A value belonging to another operating condition

Use:

Rated Input Current: Verify from physical rating label

Do not recommend a circuit breaker, plug, socket or input cable until the correct value is confirmed.

70V No-Load Voltage

The supplied specification lists a no-load voltage of 70V.

No-load voltage is present when the machine is switched on but no welding arc is active. Avoid touching exposed output terminals, electrodes or conductive welding components while the machine is energised.

Duty Cycle Requires Verification

The supplied specification table contains two different load-duration figures:

Rated Load Duration: 60%

Load Duration: 40

Because these values conflict, neither should be published as the final duty cycle until the physical rating label is checked.

Recommended temporary wording:

Duty Cycle: To be confirmed

The verified specification should ideally include:

• Duty-cycle percentage
• Welding current used for testing
• Ambient test temperature
• Required cooling period
• Applicable testing standard

Listed 85% Efficiency

The supplied image lists an efficiency of 85%.

This value can be included in the technical section, but it should not be used for direct comparisons unless the products being compared were tested under equivalent conditions.

0.89 Power Factor

The supplied specification lists a power factor of 0.89.

This information is useful for electrical planning and can be retained after confirming it from the physical machine label.

IGBT Inverter Technology

The live page identifies the MMA300-2B as an IGBT inverter welding machine. It also promotes the machine as lightweight and durable.

Do not add the following functions unless separately verified:

• Hot start
• Arc-force control
• Anti-stick
• VRD
• Lift TIG
• Automatic voltage selection
• Thermal-overload protection

Digital Welding Control Panel

The product image shows a digital display and two adjustment controls.

Until their exact functions are verified, describe the system as:

Digital Welding Control Panel

Confirm whether the display or controls provide:

• Welding-current adjustment
• Arc-force adjustment
• Hot-start adjustment
• Voltage display
• Actual-current display
• Error codes
• Thermal-warning indication

Electrical Safety Protection

The live page lists:

• Over-voltage protection
• Under-voltage protection
• Over-current protection

The operating thresholds and reset method are not published.

Generator-Compatible Positioning

The product page states that the welding machine is generator compatible. However, it does not specify the required generator capacity.

Before recommending generator operation, confirm:

• Minimum generator capacity in kVA
• Recommended continuous generator output
• AVR requirement
• Suitable generator voltage
• Single-phase or three-phase requirement
• Generator earthing instructions

Compact and Lightweight Design

The supplied specification image lists:

Net Weight: 4.95kg

Dimensions: 340 x 180 x 240 mm

This compact body supports easier movement between workshops, maintenance locations and suitable on-site jobs.

Confirm whether the dimensions represent the machine itself or the shipping carton.

Suitable for Repair and Maintenance

The current product page lists maintenance and repair among the intended applications.

Possible applications include compatible repairs to:

• Gates and grills
• Machinery frames
• Metal brackets
• Workshop equipment
• Agricultural equipment
• Fabricated assemblies
• General steel fixtures

Application suitability depends on the electrode, metal thickness, output current and verified duty cycle.

Suitable for Fabrication

The machine is positioned for general fabrication work and workshop metal joining.

Do not promote the machine for certified structural welding unless its technical capacity, electrode compatibility and welding procedure have been approved for that application.

IP21 Housing Protection

The supplied specification lists:

Housing Protection Grade: IP21

Shell Enclosure Rating: IP21S

IP21 does not mean the machine is waterproof. Keep it protected from:

• Rain
• Direct water spray
• Standing water
• Wet workshop floors
• Damp storage
• Conductive metal particles
• Excessive grinding dust

Confirm whether IP21S applies to the complete machine or only a specific enclosure condition.

Class F Insulation

The supplied specification lists Class F insulation.

Include this value in the technical specifications, but do not use it to claim a particular maximum operating temperature without official manufacturer documentation.

How to Use

• Place the machine on a stable, dry and ventilated surface.
• Confirm the correct voltage and phase configuration.
• Inspect the power cable, output terminals, welding holder and earthing clamp.
• Connect the earthing clamp to clean, bare metal.
• Insert a compatible welding electrode into the holder.
• Connect the machine to the approved electrical supply.
• Select the appropriate welding-current setting.
• Wear approved welding protective equipment.
• Begin welding using the correct electrode angle and arc length.
• Monitor the machine and welding-cable temperature.
• Follow the verified duty-cycle limitation.
• Allow the machine to cool when required.
• Switch off and disconnect the machine after use.

Safety Instructions

• Confirm the correct input voltage before connection.
• Have the electrical installation checked by a qualified electrician.
• Wear an approved welding helmet.
• Use flame-resistant gloves and protective clothing.
• Wear suitable safety footwear.
• Ensure adequate ventilation or fume extraction.
• Remove combustible materials from the welding area.
• Never weld sealed or pressurised containers.
• Inspect all electrical and welding cables before operation.
• Use proper electrical earthing.
• Keep the welding machine dry.
• Never touch exposed electrical terminals.
• Protect nearby people from welding arc and sparks.
• Keep ventilation openings unobstructed.
• Disconnect the machine before servicing.
• Internal repairs should be handled by qualified technicians.

Maintenance Instructions

• Keep the machine body clean and dry.
• Remove dust from the ventilation openings.
• Inspect the input power cable regularly.
• Check the welding holder and earthing clamp.
• Inspect the output terminals for overheating.
• Confirm that the cooling fan operates correctly.
• Replace damaged cables with properly rated parts.
• Do not wash or submerge the machine.
• Store the welder in a dry location.
• Arrange periodic professional servicing according to usage.