The ESAB RS 400 Thyristorised Welding Rectifier is a heavy-duty industrial welding power source engineered for demanding fabrication, construction, shipbuilding, and project site applications. Designed with a rugged chassis and high-performance thyristor technology, the RS 400 delivers a smooth DC welding output with minimal ripple, ensuring stable arc performance and reduced spatter.

Its Class-H insulated transformer, built-in Hot Start function, overload protection, and thermal cut-out make it ideal for continuous operation in harsh environments. The machine also supports TIG welding with suitable accessories and includes a remote-control facility for enhanced operator convenience.

Key Features

• Heavy-duty 400 Amp Thyristorised Welding Rectifier
• Smooth DC output with low ripple for excellent weld quality
• Ideal for MMA (Stick) welding applications
• Supports TIG welding with suitable accessories
• Built-in Hot Start for easy arc ignition
• Suitable for long welding leads and cellulosic electrodes
• Remote current control included as standard
• Built-in overload and thermal protection
• Handles ±10% input voltage fluctuation
• Heavy-duty undercarriage with rubber wheels
• Class-H insulated transformer for long service life
• Low power consumption
• Designed for project sites and industrial fabrication

Technical Specifications

Applications

• Structural Steel Fabrication
• Heavy Engineering
• Shipbuilding
• Pressure Vessel Manufacturing
• Construction Projects
• Pipeline Welding
• Maintenance & Repair Workshops
• Industrial Fabrication Plants

Why Choose the ESAB RS 400?

The ESAB RS 400 is built for professionals who demand dependable performance in challenging environments. Its robust construction, stable DC output, and advanced protection features ensure high-quality welds with exceptional reliability, making it an excellent choice for continuous industrial operation.

Package Includes

• ESAB RS 400 Welding Rectifier
• Remote Control Unit
• User Manual