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• Main Author: NAGAHATA KAZUHIRO
• Format: Patent
• Language: Korean
• Published: 09.12.2020
• Subjects: BASIC ELECTRIC ELEMENTS; BOARDS, SUBSTATIONS, OR SWITCHING ARRANGEMENTS FOR THE SUPPLYOR DISTRIBUTION OF ELECTRIC POWER; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER; ELECTRIC SWITCHES; ELECTRICITY; EMERGENCY PROTECTIVE DEVICES; GENERATION; RELAYS; SELECTORS

베이스부(21)의 개폐 기구부와 부하 단자(82)와의 사이에 짜넣어지고, 부하 배선에 흐르는 전류를 계측하는 센서와, 센서가 계측한 신호에 근거하여, 부하 배선에서의 이상의 발생을 검출하는 이상 검출 회로를 가지는 이상 검출부와, 이상 검출부로부터 출력된 전류에 따라 동작하는 전자 액츄에이터를 가지고, 베이스부(21)에서의 개폐 기구부와 전원 단자(81)와의 사이에 마련되며, 전자 액츄에이터에 의해 개폐 기구부의 트립 동작을 행하는 전자 트립 장치(61)를 구비하고, 베이스부(21)에는, 이상 검출 회로가 형성된 기판(41)과, 기판 841)과 전자 트립 장치(61)를 전기 접속하는 배선(42)을, 배면측으로부터 짜넣을 수 있도록, 레일 홈(21c)을 종단하는 배면 개구(21a)가 마련되어 있다. The present invention comprises: an abnormality detection unit that includes a sensor which is embedded between an opening/closing mechanism section of a base section (21) and a load terminal (82) and which measures a current flowing to load wiring, and that includes an abnormality detection circuit that detects the occurrence of abnormalities in the load wiring on the basis of a signal measured by the sensor; and an electromagnetic tripping device (61) which includes an electromagnetic actuator that acts in accordance with a current output from the abnormality detection unit, which is disposed between the opening/closing mechanism section in the base section (21) and a power source terminal (81), and which performs an action in which the opening/closing mechanism section is tripped by the electromagnetic actuator. The base section (21) is provided with a substrate (41) on which the abnormality detection circuit is formed, and a back-surface opening (21a) that vertically passes through a rail groove (21c) so that wiring (42) that electrically connects the substrate (41) and the electromagnetic tripping device (61) is embedded from the back-surface side.