Circuit breakers incorporating reset lockout mechanisms

A circuit breaker comprising:

• a line phase terminal;
• a load phase terminal;
• a line neutral terminal;
• a conductive path formed between the line phase terminal and the load phase terminal, the conductive path having an open configuration and closed configuration;
• a sensor;
• a linkage configured to move the conductive path between the open configuration and the closed configuration;
• a switch spring;
• a rocker selectively engageable with the linkage, the rocker configured to move the linkage between an open position and a closed position, wherein the rocker further comprises a finger operatively coupled to the switch spring to mechanically engage the switch spring;
• and
• wherein when the switch spring is mechanically engaged, the circuit breaker is enabled to determine when a fault condition occurs;
• and
• an arm selectively engageable with the rocker, the arm configured to prevent the conductive path from moving to the closed configuration unless the circuit breaker passes a self-test when movement of the rocker is detected.