公开(公告)号：DE19702094A1

公开(公告)日：1998-07-23

申请号：DE19702094

申请日：1997-01-22

Applicant: ABB RESEARCH LTD

Inventor： DULLNI EDGAR DR ,  GLATZ-REICHENBACH JOACHIM DR ,  KUHLEFELT JAN ,  LOITZL RUZICA ,  PELANEK ZDENEK ,  SKINDHOEJ JOERGEN DR ,  STRUEMPLER RALPH DR

IPC: H01H33/16 ,  H02H3/02 ,  H01C1/16

Abstract: The circuit breaker device (L) has at least one current conductor to which a high voltage is applied. A series circuit is arranged in the path of the current conductor. The series circuit includes a switch point and a current limiting element including at least one PTC resistor and at least one parallel connected varistor. A device for operating the switch point cooperates with the current limiting element. The current limiting element has n parallel circuits connected in series. Each parallel circuit has at least one PTC resistor and at least one varistor connected in parallel. n is a natural number greater than 1. A current sensor acting on an input of the switch actuator is arranged in the current path of the current conductor.