What happens when the current exceeds safe limits in an electrical system?

When the current exceeds safe limits in an electrical system, fuses function as critical protective devices that interrupt the current flow. Fuses are designed to melt and break the circuit when the current reaches a level that could potentially damage equipment or create hazards like overheating or fires. By interrupting the flow of current, fuses help prevent damage to the electrical system and ensure safety.

In contrast, equipment may not function properly or safely if the current exceeds its limit, and voltage regulators do not directly address excess current but instead manage voltage levels within operational limits. Transformers primarily adjust voltage levels and do not inherently compensate for overcurrent situations. Therefore, the role of fuses is pivotal in safeguarding electrical systems from the dangers associated with excessive current, ensuring that the system remains reliable and safe.