公开(公告)号：US20240399619A1

公开(公告)日：2024-12-05

申请号：US18679830

申请日：2024-05-31

Applicant: ABB Schweiz AG

Inventor： Christoph Kenel ,  Markus Hoidis ,  Thierry Delachaux

IPC: B28B1/00 ,  B28B11/00 ,  C22C1/10 ,  C22C29/00 ,  C22C29/08

Abstract: A method for forming a contact piece for a circuit breaker, the contact piece comprising a reinforcement phase and a conductive phase, the method comprising: providing a slurry of the reinforcement phase in liquid; freeze casting the slurry, to form a cast comprising a frozen liquid structure and a reinforcement phase structure; removing the frozen liquid structure from the cast, to form a foam comprising the reinforcement phase structure; sintering the foam, to form a sintered foam; and infiltrating the sintered foam with the conductive phase, to form a piece part.

公开(公告)号：US11152179B2

公开(公告)日：2021-10-19

申请号：US15937011

申请日：2018-03-27

Applicant: ABB Schweiz AG

Inventor： Thomas Schmoelzer ,  Markus Hoidis ,  Enrico Dell Oro ,  Chiara Cantini ,  Antonello Antoniazzi ,  Reinhard Simon

IPC: H01H1/021 ,  H01H71/66 ,  C22C5/06 ,  H01H1/0233 ,  H01H3/22 ,  H01H71/02 ,  H01H73/04 ,  B22F7/02 ,  C22C29/08 ,  C22C32/00 ,  H01H37/32 ,  H01H71/04

Abstract: A low voltage circuit breaker is provided. The low voltage circuit breaker includes a contact system with a first contact and a second contact that are electrically connectable and disconnectable relative to one another. The first contact includes a body having a first layer and a second layer, wherein the first layer is arranged on the second layer and is configured to come in contact with the second contact for providing the electrical connection with the second contact. The first layer has a first material composition having an Ag content that is higher than an Ag content of a second material composition of the second layer. Further, the first material composition has a WC content that is lower than a WC content of the second material composition.

公开(公告)号：US20250018489A1

公开(公告)日：2025-01-16

申请号：US18899793

申请日：2024-09-27

Applicant: ABB Schweiz AG

Inventor： Christoph Kenel ,  Markus Hoidis

IPC: B23K1/19 ,  B23K103/00 ,  B23K103/12

Abstract: A brazing method for providing a brazed joint. The method comprises directly brazing an AgC contact to a Cu carrier using an active braze.

公开(公告)号：US20180286620A1

公开(公告)日：2018-10-04

申请号：US15937011

申请日：2018-03-27

Applicant: ABB Schweiz AG

Inventor： Thomas Schmoelzer ,  Markus Hoidis ,  Enrico Dell Oro ,  Chiara Cantini ,  Antonello Antoniazzi ,  Reinhard Simon

IPC: H01H71/66 ,  H01H3/22 ,  H01H1/021 ,  H01H73/04 ,  H01H71/02

Abstract: A low voltage circuit breaker is provided. The low voltage circuit breaker includes a contact system with a first contact and a second contact that are electrically connectable and disconnectable relative to one another. The first contact includes a body having a first layer and a second layer, wherein the first layer is arranged on the second layer and is configured to come in contact with the second contact for providing the electrical connection with the second contact. The first layer has a first material composition having an Ag content that is higher than an Ag content of a second material composition of the second layer. Further, the first material composition has a WC content that is lower than a WC content of the second material composition.