What type of device is indicated by an overload indicator on CSPs?

An overload indicator on Continuous Safety Protection Systems (CSPs) is specifically associated with a circuit breaker. Circuit breakers are designed to protect electrical circuits from overload and short-circuit conditions by disrupting the flow of electricity when the current exceeds a certain threshold. The overload indicator serves as a crucial feature, providing a visual or audible alert that the breaker has detected an unsafe level of current and has tripped to prevent potential damage to the electrical system or fire hazards.

Understanding the function of circuit breakers is vital for linemen as they work to maintain electrical safety and system integrity. While other options may represent devices used in various contexts, they do not fulfill the specific role of indicating overload conditions in electrical circuits like a circuit breaker does.