Electrical fuse element
AssigneeWickmann-Werke GmbH
InventorsAndré Jöllenbeck, Barbara Marzinkowski, Peter Pössnicker
Life of this patent
Estimating the term…
Abstract
The present invention relates to an electrical fuse element having an essentially ceramic housing which, in the unfired state, is closed around at least one fusible conductor. To improve the properties of such a fuse element with respect to the extremely high internal pressures occurring during switching off as well as when exposed to an arc, a fuse element (5) in which the fusible conductor (1) has an electrically conducting component, in particular a metallic wire (2), and an insulating, porous component is proposed.
Claims15
An electrical fuse element comprising
- a) at least one fusible conductor having an electrically conductive component and an insulating, porous component;
- and
- b) a substantially ceramic housing which, in an unfired state, is closed around said at least one fusible conductor and includes at least one ceramic layer having at least one hole located proximate the at least one fusible conductor, said at least one hole being full of a conductive paste, said conductive paste being capable of cofiring and, after a sintering step, forming an electrical connection to the fusible conductor and an external contact.
An electrical fuse element comprising
- a) at least one fusible conductor having an electrically conductive elongated member and an insulating, porous component;
- b) a substantially ceramic housing which, in the unfired state, is closed around said at least one fusible conductor and includes at least one ceramic layer having at least one hole located proximate the at least one fusible conductor and filled with a conductive paste, said conductive paste being capable of cofiring and, after a sintering step, forming an electrical connection to the at least one fusible conductor and an external contact;
- c) a ceramic covering layer having a hole;
- and
- d) a ceramic base layer having a hole arranged such that the hole of said covering layer lies above the hole of the ceramic base layer in the region of the at least one fusible conductor for forming an external contact.
An electrical fuse element comprising:
- a) at least one fusible conductor comprising an electrically conductive wire and a porous, insulating component comprising a plurality of ceramic filaments, said electrically conductive wire being surrounded by said plurality of ceramic filaments in a substantially tubular manner such that said electrically conductive wire is embedded within said plurality of filaments;
- and
- b) a substantially ceramic housing which, in an unfired state, is closed around said electrically conductive wire and includes at least one ceramic layer having at least one hole located in the region of the electrically conductive wire and filled with a conductive paste, said conductive paste being capable of cofiring and, after a sintering step, forming an electrical connection to the electrically conductive wire and an external contact.
Dependencies are inferred from the claim text.