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500A Inverter Arc MMA Welder Structural Welding

● Advanced IGBT switching power supply and PWM technology.enclosed feedback control circuit, energy-efficient and low noise.Additional arc force control and digital displayRugged, reliable performance and superior arc characteristics.Built-in alarming and protective circuits are provided to preventover current, over heat and over voltage.
● Run every type of stick electrode, including cellulosic and thosefor stainless steel.
● High strength case construction for industrial applications.
● Ildeal for stick welding in vocational education, industrial production.
● Maintenance and repair or farm shop environments,etc.

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Description

Specification

Product Advantage

Product Uses

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Product Overview

The 500A IGBT DC Inverter Arc Welder is a heavy-duty welding solution engineered for industrial users and enterprise-level fabrication teams, designed specifically for structural welding scenarios that demand high power and stable performance. Adopting advanced IGBT switching power supply and PWM technology, this welder features an enclosed feedback control circuit that ensures energy-efficient operation with ultra-low noise, a core demand for large-scale industrial workshops. With an output current range of 20-500A, arc force current adjustable from 0-100A and hot start current of 0-100A, it delivers superior arc characteristics and reliable ignition for all types of stick electrodes, including cellulosic and stainless steel electrodes. Boasting a high-strength cold-rolled steel case and IP21S protection grade, it is built to withstand the harsh conditions of construction sites and heavy industrial production. The integrated digital display and arc force control enable precise parameter adjustment, while built-in alarming and protective circuits effectively prevent over current, over heat and over voltage, making it a robust choice for continuous heavy-duty welding work. Its rated input capacity of 15KVA (AC380V, 50/60Hz) and 60% rated duty cycle further ensure consistent performance for enterprise-level welding demands, with a usable electrode range of 1.6-5.0mm to cover all structural welding needs.

500A Inverter Arc MMA Welder Structural Welding

MODEL	MMA-315	MMA-400	MMA-500	MMA-630

Input Power Voltage(V)	AC380V	AC380V	AC380V	AC380V
Input Power Frequency(Hz)	50/60	50/60	50/60	50/60
Rated Input Capacity(KVA)	9	12.5	15	18.5
output Current Range(A)	20-315	20-400	20-500	20-630
ARC Force Current(A)	0-100	0-100	0-100	0-100
HOT Start Current(A)	0-100	0-100	0-100	0-100
Lift Tig	YES	YES	YES	YES
VRD	YES	YES	YES	YES
No-load Voltage(V)	67	67	67	67
Rated Duty Cycle(%)	60	60	60	60

Power Factor(COSΦ)	0.93	0.93	0.93	0.93
Protection Grade	IP21S	IP21S	IP21S	IP21S
Dimensions(mm)	500260420	500260420	500260420	550260470
Weight(Kg)	12	14	17	20
Usable Electrode(mm)	1.6-5.0	1.6-5.0	1.6-5.0	1.6-5.0

Advantages of 500A IGBT DC Inverter Arc Welder

High-Efficiency Power Conversion & Energy Saving

Equipped with high-frequency inverter technology, this industrial structural welding machine achieves a power conversion efficiency of 95%, saving 40% of electricity compared with traditional welders— a critical advantage for industrial users aiming to reduce operational costs. Its no-load power consumption is only 0.8W, and the power factor reaches 0.93, maximizing energy utilization for continuous large-scale welding operations.

Rugged Industrial-Grade Durability & Anti-Interference

The thickened cold-rolled steel shell and IP21S dustproof and waterproof design allow the welder to work stably in extreme environments from -20℃ to 60℃. The built-in anti-interference circuit effectively resists voltage fluctuations, ensuring stable performance even in unstable power supply conditions of construction sites. With a service life of over 8 years and 8 hours of continuous working time, it fully meets the high-intensity use requirements of industrial production and structural engineering.

Intelligent Welding Control & High Precision

Featuring an intelligent current regulation chip, the welder realizes 0.1A stepless fine adjustment, matching more than 20 welding materials such as mild steel and alloy steel. It achieves high precision low spatter welding with a weld seam smoothness rate of 99.5%, avoiding secondary polishing and improving construction efficiency by 30% for both professional welders and enterprise welding teams.

Comprehensive Safety & Humanized Operation

The clear digital display and intuitive parameter adjustment panel reduce the learning cost for operation teams, while the over-temperature automatic protection and overload alarm functions ensure safe operation in heavy-duty scenarios. The machine’s dimensions of 500×260×420mm and weight of 17kg balance ruggedness and maneuverability, suitable for both fixed workshop production and on-site structural welding.

Uses of 500A IGBT DC Inverter Arc Welder

Construction Steel Structure Welding

As the core equipment for construction enterprise teams, it is used to weld steel beams, columns and rebars for high-rises, bridges and industrial workshops, building load-bearing frames with excellent structural stability and earthquake resistance. Its stable performance adapts to the outdoor and high-altitude complex working conditions of construction sites, the primary application scenario for this heavy-duty MMA welder for enterprise fabrication.

Large-Scale Industrial Production

Ideal for metal processing factories and manufacturing enterprises, it is applied in the welding of large-scale mechanical parts, industrial equipment frames and heavy metal components. The wide electrode compatibility and high output current meet the mass production demands of industrial manufacturing, ensuring welding quality and production efficiency.

Heavy-Duty Maintenance & Repair

Suitable for maintenance teams of factories, shipyards and farm shops, it is used to repair large-scale mechanical equipment, ship hull structures and heavy agricultural machinery. The strong arc force and reliable ignition ensure perfect welding of thick metal plates, restoring the structural strength of damaged equipment efficiently.

Vocational Education & Training

It is also a professional teaching tool for welding vocational education institutions, providing industrial-grade welding experience for trainee welders and helping them master the operation skills of heavy-duty welding equipment, meeting the talent training needs of the welding industry.