What does a surge protector do?

A surge protector is designed to safeguard electronic devices from voltage spikes, which can occur due to various factors such as lightning strikes, electrical storms, or sudden fluctuations in power supply. By diverting excess voltage away from connected devices, it helps prevent damage that could result from these surges. This protection is crucial because voltage spikes can lead to overheating, component failure, or even complete device destruction.

The other options describe functions that do not align with the primary purpose of a surge protector. Increasing voltage delivered to devices, allowing devices to consume more power over time, or serving as a circuit breaker for older wiring systems do not accurately depict how surge protectors function. Instead, they focus on entirely different mechanisms related to power management and electrical safety.