Overload release, in particular for a circuit breaker
AssigneeSiemens Aktiengesellschaft
InventorsAndreas Dürr, Xaver Laumer
Life of this patent
Estimating the term…
Abstract
An overload release is disclosed, in particular for a circuit breaker, including a metal strip which is made of at least two different types of metal and around which a heat conductor is wound, wherein an electrical insulator is arranged between the metal strip and the heat conductor. In an embodiment, the heat conductor is welded onto the metal strip by way of arc welding.
Claims14
An overload release, comprising:
- a metal strip, including at least two different types of metal;
- a heating conductor, wound around the metal strip and welded onto the metal strip;
- and
- an electrical insulator, arranged between the metal strip and the heating conductor,
- wherein substantially an entire end surface of the heating conductor is welded to the metal strip through an arc weld, the end surface being a transverse surface intersecting a longitudinal surface and a lateral surface of the heating conductor.
A method for producing an overload release including a metal strip, the metal strip including at least two different types of metal and a heating conductor being wound around the metal strip, and an electrical insulator arranged between the metal strip and the heating conductor, the method comprising:
- welding, substantially, an entire end surface of the heating conductor onto the metal strip by end-on contactless tungsten inert-gas welding arc (TIG welding), the end surface being a transverse surface intersecting a longitudinal surface and a lateral surface of the heating conductor.
A method for producing an overload release, comprising:
- winding a heating conductor around a metal strip and an electrical insulator so that the electrical insulator is arranged between windings of the heating conductor and the metal strip, the metal strip including at least two different types of metal;
- and
- welding, substantially, an entire end surface of the heating conductor onto the metal strip using a welding process that uses an arc to weld the heating conductor onto the metal strip without exerting additional resistance forge welding at a welding point, the end surface being a transverse surface intersecting a longitudinal surface and a lateral surface of the heating conductor.
A method for producing an overload release having:
- a metal strip including at least two different types of metal;
- a heating conductor wound around the metal strip;
- and
- an electrical insulator arranged between the metal strip and the heating conductor, the method comprising:
- welding an entire end surface of the heating conductor onto the metal strip by an end-on arc tungsten inert-gas weld (TIG weld), the end surface being a transverse surface intersecting a longitudinal surface and a lateral surface of the heating conductor.
Dependencies are inferred from the claim text.