Global Patent Index - EP 0096834 A3

EP 0096834 A3 19851030 - PROTECTIVE CIRCUIT ARRANGEMENT, ESPECIALLY FOR ELECTRICAL DEVICES

Title (en)

PROTECTIVE CIRCUIT ARRANGEMENT, ESPECIALLY FOR ELECTRICAL DEVICES

Publication

EP 0096834 A3 19851030 (DE)

Application

EP 83105600 A 19830608

Priority

  • DE 3221919 A 19820611
  • DE 3241133 A 19821108

Abstract (en)

[origin: EP0096834A2] A protection circuit arrangement has a fuse element (2) as short-circuit protection in the power, or primary circuit, and a temperature-dependent resistor (7) in a secondary circuit, the resistor (7) being electrically isolated from the fuse element (2) but being thermally coupled thereto. When the fuse element (2) warms up in the primary circuit under a current load, especially under an excessive current load, the temperature-dependent resistor (7) is likewise warmed up because of the thermal coupling, with a corresponding change of its resistance value proportional to the current load influencing the fuse element (2) in the primary circuit. On reaching specific instantaneous values of the resistor (7), which correspond to predetermined operating points, the secondary circuit switches the primary circuit off or exercises other protective functions. In this protective circuit arrangement, the fuse element (2) and the temperature-dependent resistor (7), which is thermally coupled thereto, are arranged as a separate electrical component, electrically isolated but jointly on a thermally conductive carrier (1) of dielectric material. <IMAGE>

IPC 1-7

H01H 85/04; H01H 85/46

IPC 8 full level

H01H 85/046 (2006.01); H01H 85/46 (2006.01)

CPC (source: EP)

H01H 85/046 (2013.01); H01H 85/463 (2013.01); H01H 2085/0483 (2013.01)

Citation (search report)

Designated contracting state (EPC)

DE FR GB IT NL SE

DOCDB simple family (publication)

EP 0096834 A2 19831228; EP 0096834 A3 19851030

DOCDB simple family (application)

EP 83105600 A 19830608