Manual and motor operated circuit breaker

Abstract From the Canadian patent

A circuit breaker is equipped with both a rotary operating handle and a power unit for selective manual and motor driven operation thereof. Mechanical and electrical control elements cooperate to insure reliable operation in both the manual and motor driven operating modes and, as a safety, measure, to provide fool-proof visual indications of the, circuit breaker condition during the progressive stages of either operating mode. The power unit utilizes a permanent magnet, DC motor for improved performance and economies in design.