Ronix RH-4640 400A DC ARC Welding Inverter | IGBT Technology | Digital Display | Over Voltage, Heat,

Features
IGBT technology for better welding quality , greater welding penetration,reduced energy consumption and increased efficiency
Unbeatable automatic short circuit current protection, easy ignition, less spark, provides excellent arc strike performance at rust suface
Multi protection of over voltage, over heat, over current and over load protection
Hot start, anti-stick, less spark, reliable. Ideal welding equipment for entry-level welder.
Digital display provides highly accurate welding
Professional cooling system in order to increase efficiency and continuance welding

[@RaffyLabor]

Open inside the machine..I have ronix 250amp.