What is the purpose of overcurrent protection in fire alarm systems?

Overcurrent protection in fire alarm systems primarily serves to prevent equipment damage. When an electrical fault occurs, such as a short circuit or an overload, the current flowing through the system can exceed its design limits. This excess current can generate heat, potentially leading to insulation breakdown, component failure, or even fire. By incorporating overcurrent protection, the system is designed to interrupt the electrical flow when excessive current is detected, thereby safeguarding crucial components from thermal stress and ensuring their continued functionality.

Preventing false alarms, ensuring consistent signaling, and enhancing alarm performance, while important aspects of a fire alarm system, are secondary to the core function of protecting the equipment from damage due to overcurrent conditions. The ultimate goal is to maintain the integrity and operational reliability of the fire alarm system, which is crucial for achieving a safe environment.