The Tesla Arc, developed by the Sovereignty Republic of Salvatia under the visionary leadership of Supreme Sovereign Xavier Salvador, is a revolutionary energy system that synergizes advanced electromagnetic field manipulation with arcane magitechnology, creating a self-sustaining, high-output energy source capable of powering everything from colossal defense structures to portable weapons with unparalleled efficiency and adaptability. At its core, the Tesla Arc operates by channeling and amplifying electrical energy through specialized aetherium conduits, which are infused with magical properties to stabilize and enhance the flow of electricity, producing arcs of energy that are not only immensely powerful but also highly malleable, allowing for precision control and rapid energy transfer across connected systems.

The Tesla Arc Tower, an imposing defense structure built to protect Salvatian cities, fortresses, and key installations, functions by harnessing the raw power of the Tesla Arc to generate massive discharges of concentrated electrical energy, which are then released in devastating arcs capable of vaporizing enemy forces, disabling incoming projectiles, and disrupting electronic systems with pinpoint accuracy. These towers are equipped with an intricate network of magitechnological amplifiers and targeting arrays, allowing them to track and engage multiple enemies simultaneously, while their regenerative aetherium cores ensure a near-limitless supply of energy, making them resilient against prolonged sieges and environmental conditions.

The Tesla Arc Gun, wielded by Salvatian infantry and integrated into the arsenal of mecha fighters, is a portable application of the Tesla Arc's energy system, designed to deliver devastating bursts of lightning-like energy in combat scenarios. Infantry variants of the Tesla Arc Gun feature ergonomic designs with reinforced aetherium-infused barrels, enabling soldiers to unleash concentrated electrical blasts that can pierce through armor and incapacitate electronic systems with unparalleled effectiveness. Meanwhile, the mecha-mounted Tesla Arc Guns are scaled-up versions equipped with advanced cooling systems and energy modulators, capable of generating continuous streams of destructive energy or firing concentrated arcs that chain between multiple targets, providing both overwhelming firepower and tactical versatility on the battlefield.

In essence, the Tesla Arc represents the pinnacle of Salvatian magitechnological innovation, blending science and magic into a harmonious energy system that empowers the nation's defensive and offensive capabilities while serving as a testament to the ingenuity and ambition of Salvatian engineering and strategic design.