Model RT-S420 Series

2B RT-S420 IGBT Inverter MMA Welding Machine (Rapidtech Series)

Rated Voltage: 220V / 60Hz Maximum
Input Power: 8.1 KVA Max
Weight: 6.35 / 4.55 kg Special

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Other sizes and models

S420S520

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Specifications

Model	RT-S420 Series
Rapidtech Series Welding Type	DC Inverter MMA Welding Machine
Rated Voltage	220V / 60Hz Maximum
Input Power	8.1 KVA Max
No Load Voltage	56
V Current	Range 20 – 180 A Usable Electrodes 1.6 – 5.0 mm Duty Cycle 20%
Weight	6.35 / 4.55 kg Special

Description

The 2B RT-S420 IGBT Inverter MMA Welding Machine (Rapidtech Series) is a portable yet powerful DC inverter welding machine designed for fabrication, maintenance, and construction welding tasks. Built with modern IGBT inverter technology, this machine provides stable arc performance, efficient energy usage, and reliable welding output for professional and workshop environments.

Key Benefits

High welding capacity supporting electrodes up to 5.0mm
Portable inverter design with digital amp meter for precise current control
Arc force control and overheating protection improve welding stability and safety

Product Overview

The 2B RT-S420 IGBT Inverter MMA Welding Machine from the Rapidtech Series is engineered for contractors, technicians, and workshop users who require reliable welding performance in a compact machine. Its inverter technology ensures smooth arc characteristics and improved power efficiency compared to conventional welding equipment. Operating on a 220V power supply with 8.1 KVA maximum input power, the RT-S420 offers a current range from 20A to 180A, supporting electrodes from 1.6mm to 5.0mm. Designed for portability, the unit includes features such as a digital amp meter, arc force control, and secure threaded locking connectors, making it suitable for fabrication, equipment repair, and field welding work.