CIRCUIT BREAKER

• Main Authors: NAGAMINE KAZUTERU, TABATA YUTAKA, MIZUKAMI SHOICHIRO
• Format: Patent
• Language: English; Japanese
• Published: 19.01.2024
• Subjects: BASIC ELECTRIC ELEMENTS; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; RELAYS; SELECTORS

To provide a circuit breaker which can be downsized and stably perform a rotating operation of a movable contactor.SOLUTION: A current interruption section corresponding to each phase of a main circuit comprises a long tabular movable contactor 16 with a first movable contact 16d and a second movable contact 16e provided in both ends. In the movable contactor, a power source side spring arrangement space 19 is provided by forming a first recess on one surface in a width direction closer on a side closer to the first movable contact than a shank 16a provided in a central part in a length direction, and a load side spring arrangement space 21 is provided by forming a second recess on the other face in the width direction closer to the second movable contact than the shank. A power source side contact pressure spring 17 is arranged in the power source side spring arrangement space, and both ends of the spring are engaged to the movable contactor and a movable element holder 14. A load side contact pressure spring 18 is arranged in the load side spring arrangement space, and both ends of the spring are engaged to the movable contactor and the movable holder.SELECTED DRAWING: Figure 3 【課題】小型化を図ることができるとともに、可動接触子の回動動作を安定して行うことができる回路遮断器を提供する。【解決手段】主回路の各相に対応する電流遮断部は、第１可動接点１６ｄ及び第２可動接点１６ｅを両端に設けた長尺な板形状の可動接触子１６を備えている。可動接触子は、長尺方向の中央部に設けた軸部１６ａより第１可動接点側の幅方向の一方の面に第１凹部を形成することで電源側バネ配置スペース１９が設けられ、軸部より第２可動接点側の幅方向の他方の面に第２凹部を形成することで負荷側バネ配置スペース２１が設けられている。そして、電源側接圧バネ１７が、電源側バネ配置スペースに配置され、バネ両端部が可動接触子及び可動子ホルダ１４に係合されている。また、負荷側接圧バネ１８が、負荷側バネ配置スペースに配置され、バネ両端部が可動接触子及び可動ホルダに係合されている。【選択図】図３