Lichtbogenkontaktanordnung und Schutzschalter

Details

Veröffentlichungs-Nr.

EP3989255

Aktenzeichen

EP21204286

Anmeldetag

22. Oktober 2021

Veröffentlichung

24. Juli 2024

Erteilung

24. Juli 2024

Rechtsraum

EP

IPC

H01H33/12H01H3/40

Abstract

The present invention provides an arc contact assembly and a circuit breaker. The arc contact assembly comprises: a base; a support rod, a support rod lower end being erected on the base in a first direction perpendicular to the base, and a threaded part being formed at the support rod upper end; an arc contact body 400, comprising: a contact point and a bottom remote from the contact point, with a threaded hole being provided at the bottom, and being fitted round the threaded part of the support rod; a length compensation mechanism, comprising: a thermal bimetallic spring member, a first connecting member and a second connecting member, wherein a spring upper end of the thermal bimetallic spring member is connected to the second connecting member, and a spring lower end of the bimetallic spring is connected to the first connecting member, such that the thermal bimetallic spring member gives rise to a torque when experiencing deformation according to temperature, so that the arc contact body rotates around the threaded part and moves in a direction away from the base, guided by the mating of the threads. This solves the problem that an arc contact in the prior art is unable to meet the requirement for a high electrical life, in particular of 20 times or more, due to loss.

Anmelder

Firma

Siemens Energy Global GmbH & Co. KG

Land

🇩🇪 Deutschland

Fachgebiete