Fronius

TPS 400i Genuine Fronius Welding Machines

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Introduction to Fronius TPS 400i Welding Machine

The Fronius TPS/i series intelligent welding platform sets a new standard in welding performance, user interface, and operational simplicity. Through a fundamental redesign of the working principles, the TPS 400i delivers exceptional arc stability, energy efficiency, and process reliability. Its modular design and scalable system architecture offer unmatched flexibility, making it suitable for a wide range of industrial welding applications.

This page provides a detailed overview of the Fronius TPS 400i – a high-performance welding machine engineered for precision and productivity.

Key Specifications

Parameter	Value
Maximum Welding Current	400 A
Minimum Welding Current	3 A
Welding Current / Duty Cycle (10 min / 40°C)	400 A / 40%
	360 A / 60%
	320 A / 100%
Operating Voltage	14.2 – 34.0 V
Open Circuit Voltage	73 V
Mains Frequency	50/60 Hz
Mains Voltage	3 x 400 V
Mains Fuse	35 A
Dimensions (W x L)	300 mm x 706 mm
Weight	36.45 kg
Protection Level	IP23

Fronius TPS 400i welding machine front view

Main Features

Plain Text Display

The TPS 400i features an intuitive plain text display that shows all welding parameters in clear language. By analyzing user interaction data, Fronius optimized the panel layout, color scheme, brightness, and button feedback. Graphics and text work together to make operation faster and simpler – even when wearing heavy welding gloves.

FSC Interface (Fast System Connector)

The FSC interface is the central connection point between the welding machine and various welding peripherals. It allows tool‑less, quick connection of torch and feeder lines, ensuring stable current transmission and significantly reducing downtime during maintenance or replacement of wear parts.

Plug & Weld Functionality

Every component of the TPS 400i system can be installed manually. After connection, the system automatically identifies the attached components and alerts the user if any incompatible part is detected. This plug‑and‑weld capability prevents incorrect setup, guarantees system integrity, and simplifies installation.

SpeedNet Communication

The integrated SpeedNet data bus operates at up to 100 Mbit/s, enabling real‑time, high‑speed communication between all welding system components. This ensures precise process control, instantaneous parameter adjustments, and continuous monitoring of system status, resulting in superior weld quality and reliability.

Fronius TPS 400i control panel and interfaces

Why Choose the Fronius TPS 400i?

Ideal for demanding industrial environments – from automotive manufacturing to heavy fabrication – the TPS 400i combines robust construction with intelligent features. Its high duty cycle, wide current range, and advanced communication capabilities make it a versatile solution for MIG/MAG, pulsed, and other advanced welding processes.