Fuse boxes are centralized distribution points for electrical circuits, typically located within the engine compartment or passenger cabin. They house a series of fuses—protective devices utilizing a calibrated metallic strip that breaks upon excessive current—safeguarding wiring and components from damage. Each fuse corresponds to a specific circuit, allowing for isolated protection and troubleshooting. Modern fuse boxes often incorporate relay sockets and bus bars for efficient current distribution. Construction materials are typically heat-resistant polymers and corrosion-resistant metal contacts to ensure longevity and reliability.