Circuit breakers and circuit breaker box

A circuit breaker box comprising a main circuit breaker for operatively connecting to hot service wires; first and second hot bus bars configured to receive power from the main circuit breaker; a plurality of receiver terminals configured to transfer power from a circuit breaker component to a first wire of an electrical circuit; and a safety shield for enclosing the hot bus bars and receiver terminals, wherein a plurality of slots is disposed in the safety shield, the slots are aligned with the first or second hot bus bars and receiver terminals, wherein the circuit breaker component comprises a first and a second prong contact for contacting the first or second hot bus bar and a receiver terminal, respectively.