As can be seen above, the Tyco Electronics line of circuit breakers encompasses several different models. The products are shown in approximate proportion to one another in this view. One feature that is common to all Tyco Electronics breakers is that they are designed to be trip-free devices. This means that in the event of an over-current, the breaker can trip and open its contacts even if someone or something is holding the button, rocker or toggle in the closed position. This helps to maintain circuit protection.