(19)
(11) EP 4 258 314 A3

(12) EUROPEAN PATENT APPLICATION

(88) Date of publication A3:
17.01.2024 Bulletin 2024/03

(43) Date of publication A2:
11.10.2023 Bulletin 2023/41

(21) Application number: 23195006.4

(22) Date of filing: 06.08.2018
(51) International Patent Classification (IPC): 
H01H 73/18(2006.01)
H01H 33/10(2006.01)
 H01H 9/36(2006.01)
(52) Cooperative Patent Classification (CPC):
H01H 9/36; H01H 73/18; H01H 2009/365
(84) Designated Contracting States:
AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

(30) Priority: 01.02.2018 JP 2018016138

(62) Application number of the earlier application in accordance with Art. 76 EPC:
18904243.5 / 3748666

(71) Applicant: MITSUBISHI ELECTRIC CORPORATION
Chiyoda-ku Tokyo 100-8310 (JP)

(72) Inventors:
  • Matsumura, Kohei
    Tokyo, 100-8310 (JP)
  • Sagara, Yuta
    Tokyo, 100-8310 (JP)

(74) Representative: Witte, Weller & Partner Patentanwälte mbB 
Postfach 10 54 62
70047 Stuttgart
70047 Stuttgart (DE)

   


(54) CIRCUIT BREAKER AND CIRCUIT BREAKING METHOD


(57) .The present application relates to a circuit breaker in which an arc generated between contact (1a, 2a) is interrupted by at least one grid (5) to extinguish the arc (10), wherein the grid (5) has an insulating portion (52); the arc (10) generated between the contact (1a, 2a) is drawn into the grid (5), generates arc discharges at mutually different positions of the grid (5), and flows through the grid (5); and the insulating portion (52) is provided between those mutually different positions of the grid (5) and makes current flowing through the grid (5) between those generated arc discharges.







Search report









Search report