Global Patent Index - EP 3358577 B1

EP 3358577 B1 20200122 - OVERVOLTAGE PROTECTION DEVICE INCLUDING A VARISTOR A FUSE AND TWO FAIL SAFE MECHANISMS

Title (en)

OVERVOLTAGE PROTECTION DEVICE INCLUDING A VARISTOR A FUSE AND TWO FAIL SAFE MECHANISMS

Title (de)

ÜBERSPANNUNGSSCHUTZVORRICHTUNG MIT WAFER AUS VARISTORMATERIAL, EIN THERMISCHES ELEMENT, UND MIT ZWEI SICHERHEITSMECHANISMUS

Title (fr)

DISPOSITIFS DE PROTECTION CONTRE LES SURTENSIONS COMPRENANT UNE VARISTANCE, UN ÉLÉMENT FUSIBLE ET DEUX MÉCANISMES DE DÉCLANCHEMENT DE SÉCURITÉ

Publication

EP 3358577 B1 20200122 (EN)

Application

EP 18163022 A 20120726

Priority

  • GR 20120100325 A 20120619
  • US 201213552240 A 20120718
  • EP 12177955 A 20120726

Abstract (en)

[origin: EP2677524A1] An overvoltage protection device includes first and second electrically conductive electrode members (130, 120) and a varistor member (110) formed of a varistor material (172) and electrically connected with each of the first and second electrode members. The overvoltage protection device has an integral fail-safe mechanism operative to electrically short circuit the first and second electrode members about the varistor member by fusing the meltable member (140) in the overvoltage protection device (134) by using an electric arc. The overvoltage protection device further includes an electrically insulating spacer member (144) electrically isolating the fusing metal member (140) from the electrodes; the electric arc disintegrates the spacer member and extends across the gap (G1, G3 and G2) to fuse the meltable/fusing member (140).

IPC 8 full level

H01C 7/12 (2006.01); H01C 8/04 (2006.01); H01T 1/16 (2006.01)

CPC (source: EP)

H01C 7/126 (2013.01); H01C 7/12 (2013.01); H01T 1/14 (2013.01)

Designated contracting state (EPC)

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

DOCDB simple family (publication)

EP 2677524 A1 20131225; EP 2677524 B1 20180905; DK 3358577 T3 20200427; EP 3358577 A1 20180808; EP 3358577 B1 20200122; EP 3640958 A1 20200422; EP 3640958 B1 20230329; PL 2677524 T3 20190228; PL 3358577 T3 20210125; SI 2677524 T1 20181231; SI 3358577 T1 20200731

DOCDB simple family (application)

EP 12177955 A 20120726; DK 18163022 T 20120726; EP 18163022 A 20120726; EP 19214780 A 20120726; PL 12177955 T 20120726; PL 18163022 T 20120726; SI 201231429 T 20120726; SI 201231769 T 20120726