What does the test position of a breaker indicate?

The test position of a breaker is specifically designed to facilitate offline testing of the equipment without exposing it to live power. In this position, the power circuit is intentionally disconnected, allowing for safe evaluation of various parameters and functionality without the risk of electric shock or interference. While connected, the control circuit and ground remain operational, enabling technicians to perform diagnostic tests and verify the integrity of control functions within a safe environment.

This approach allows for comprehensive testing, ensuring all control functions can be checked while the power source remains inactive. The design of switching mechanisms in breakers ensures operators can safely conduct these tests, focus on control and protective features, and prevent any unintended energizing of the connected circuits.