What does a blue light at the breaker indicate?

A blue light at the breaker typically indicates that the breaker is closed, meaning that it is in the 'on' position and allowing electricity to flow through the circuit. This visual indication serves as a quick reference for determining the status of the breaker without needing to physically check it.

The function of circuit breakers includes ensuring electrical safety and managing power distribution. The blue light's clarity in showing that the breaker is closed aids users in maintaining proper energy management and troubleshooting any potential issues in their electrical systems. In contrast, indicators for an open breaker or a malfunctioning system may be represented by different colors or lights to signify their specific conditions.