What safety features does the Big Blue 400 Pro have?

The Big Blue 400 Pro includes thermal overload protection to prevent damage from exceeding duty cycles or airflow obstruction, low open-circuit voltage (VRD) for enhanced safety when welding is inactive, Hot Start™ technology, contactor control, auto-idle, and a 120 V block heater. It also features a durable HD powder coat finish with zinc-rich primer for corrosion resistance.