Fuji Electric Co., Ltd.

Yasutoshi Ide

Koji Asakawa

Katsunori Kuboyama

Tatsunori Takahashi

Hideto Yamagata

Yoshinobu Hamada

Akihiko Kohanawa

Shoji Katsuyama

Hisao Kawato

Hideki Koyama

Junichi Iwase

Shuji Fushikida

A circuit breaker includes a molded case comprised of a case and a cover. Terminal parts to be connected to a power supply and a load are provided respectively at front and rear ends of the molded case. A control mechanism for switching a movable contact is disposed between the front and rear terminal parts. The cover is divided into three parts for covering the control mechanism and the terminal parts disposed at front and rear of the control mechanism, respectively. The front and rear parts of the cover covering the terminal parts are detachably mounted on the molded case as terminal covers.

Circuit breaker

Manual motor starter

An AC/DC current detection method that can detect small and large changes in current, by employing a high-frequency excitation current applied to a coil wrapped around an annular iron core. The change in this value is determined for operation in the region of the coercive force of the iron core or as the change in an extreme value thereof.

AC/DC current detecting method

Growing community of inventors

Saitama, Japan

Yasutoshi Ide