What is the function of an electrical device designed to stop current flow during faults?

The function of an electrical device designed to stop current flow during faults is primarily to disconnect the circuit during an overload. When a fault occurs, such as a short circuit or an excessive current draw, this device acts as a protective measure to interrupt the flow of electricity. By doing so, it helps prevent damage to the electrical system, reduces the risk of fire, and enhances safety by minimizing the likelihood of electric shock. This mechanism is essential in maintaining the integrity of electrical systems and ensuring that safe operating conditions are upheld.

Other options do not accurately describe the primary function of fault protection devices. Regulating voltage assists in maintaining stable electric supply but does not directly interrupt current during faults. Moisture insulation is more about protecting components from environmental factors rather than managing current flow. Similarly, splitting circuits for better load management pertains to designing systems for efficiency and balance rather than addressing fault conditions directly.