What is the main purpose of using surge protectors in electrical circuits?

The main purpose of using surge protectors in electrical circuits is to safeguard against voltage spikes. These devices are designed to protect electrical equipment from transient voltage surges, which can occur due to various factors such as lightning strikes, power outages, or switching activities within the electrical system. When a voltage spike occurs, the surge protector diverts the excess voltage away from sensitive appliances and devices, preventing damage that could result from these sudden increases in voltage.

Surge protectors work by absorbing or redirecting the surge energy, allowing only a safe amount of voltage to pass through to connected equipment. This protection is crucial for maintaining the longevity of electronic devices, especially in HVACR systems where sensitive components like controls, sensors, and communication devices can be easily affected.

While increasing voltage levels, improving circuit efficiency, and reducing energy consumption are important concepts in electrical systems, they are not the primary function of surge protectors. The primary role is focused specifically on protecting against harmful voltage surges, making option B the correct choice.