IP Library Granted Patent US 12671050
Granted Patent B2
US 12671050 · App. 18/408,844 · Granted Jun 30, 2026

Vacuum interrupter fuse

Inventors: Dietmar Gentsch (Ratingen, DE); Werner Ebbinghaus (Waltrop, DE)
Assignee: ABB Schweiz AG
H01H85/047
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Quick Facts
Patent No.
US 12671050
App. No.
18/408,844
Granted
Jun 30, 2026
Kind
B2
Abstract

A CutOut, comprising a first electrical connection rod; a second electrical connection rod; a first contact; a second contact; and a fuse wire; wherein the first contact is mounted to the first electrical connection rod; wherein the second contact is mounted to the second electrical connection rod; wherein when a current below a threshold levels flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut the vacuum-based fuse-CutOut is configured to hold the first contact a fixed distance from the second contact and the fuse wire is configured to electrical connect the first electrical connection rod to the second electrical connection rod; and wherein when a current at or above the threshold flows through the vacuum-based fuse-CutOut the fuse wire is configured to electrically disconnect the first electrical connection rod from the second electrical connection rod.

Claims (53)

1 . A vacuum-based fuse-CutOut, comprising:

a first electrical connection rod;

a second electrical connection rod;

a first contact;

a second contact;

a fuse wire;

a steel wire;

a release spring;

an insulation part surrounding the first contact, the second contact, the fuse wire, and the steel wire, the insulation part configured to maintain a vacuum around the first contact, the second contact, the fuse wire, and the steel wire;

a bellows;

a support lid; and

an outer body, wherein the outer body surrounds the insulation part, the support lid, the bellows, and the release spring, wherein the support lid abuts the insulation part, and

wherein the bellows are arranged between the insulation part and the release spring,

wherein the first contact is mounted to the first electrical connection rod;

wherein the second contact is mounted to the second electrical connection rod;

wherein when a current below a threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut the vacuum-based fuse-CutOut is configured to hold the first contact a fixed distance from the second contact, at least in part by the steel wire and the fuse wire is configured to electrically connect the first electrical connection rod to the second electrical connection rod;

wherein when a current at or above the threshold flows through the vacuum-based fuse-CutOut the fuse wire is configured to melt, thereby electrically disconnecting the first electrical connection rod from the second electrical connection rod,

wherein when the fuse wire electrically disconnects the first electrical connection rod from the second electrical connection rod the release spring is configured to move the second contact away from the first contact, and the second electrical connection rod away from the first electrical connection rod.

2 . The vacuum-based fuse-CutOut according to claim 1 , wherein the second contact is fixedly mounted to the second electrical connection rod.

3 . The vacuum-based fuse-CutOut according to claim 1 , wherein the first contact is a transverse magnetic field, TMF, contact, and wherein the second contact is a TMF contact.

4 . The vacuum-based fuse-CutOut according to claim 1 , wherein the first contact is an axial magnetic field, AMF, contact, and wherein the second contact is an AMF contact.

5 . The vacuum-based fuse-CutOut according to claim 1 , wherein the first contact is a transverse magnetic field, TMF, contact, and wherein the second contact is an AMF contact.

6 . The vacuum-based fuse-CutOut according to claim 1 , wherein the first contact is an AMF contact, and wherein the second contact is a TMF contact.

7 . The vacuum-based fuse-CutOut according to claim 1 , wherein when the current below the threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut the first contact is held the fixed distance from the second contact at least in part by the fuse wire.

8 . The vacuum-based fuse-CutOut according to claim 1 , wherein the vacuum-based fuse-CutOut comprises an outer body, and wherein the outer body is configured to maintain a vacuum within the body when the current below the threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut.

9 . The vacuum-based fuse-CutOut according to claim 8 , wherein the insulation part is located within the outer body, and wherein the insulation part surrounds the first contact and the second contact when the current below the threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut.

10 . Vacuum-based fuse-CutOut according to claim 9 , wherein the insulation part surrounds the first contact and the second contact during movement of the second contact away from the first contact when the fuse wire electrically disconnects the first electrical connection rod from the second electrical connection rod.

11 . The vacuum-based fuse-CutOut according to claim 1 , wherein the first contact and the second contact are further held opposite each other in an axial direction at least in part by the steel wire.

12 . A vacuum interrupter device, comprising:

a vacuum-based fuse-CutOut, comprising:

a first electrical connection rod;

a second electrical connection rod;

a first contact;

a second contact;

a fuse wire;

a steel wire;

an insulation part surrounding the first contact, the second contact, the fuse wire, and the steel wire, the insulation part configured to maintain a vacuum around the first contact, the second contact, the fuse wire, and the steel wire,

wherein the first contact is mounted to the first electrical connection rod;

wherein the second contact is mounted to the second electrical connection rod;

wherein when a current below a threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut the vacuum-based fuse-CutOut is configured to hold the first contact a fixed distance from the second contact and the fuse wire is configured to electrically connect the first electrical connection rod to the second electrical connection rod; and

wherein when a current at or above the threshold flows through the vacuum-based fuse-CutOut the fuse wire is configured to melt, thereby electrically disconnecting the first electrical connection rod from the second electrical connection rod;

a first electrical connector connected to the first electrical connection rod of the vacuum-based fuse-CutOut;

a second electrical connector connected to the second electrical connection rod of the vacuum-based fuse-CutOut;

at least one insulation structure surround at least part of the first electrical connector,

wherein when the current below the threshold level flows through the vacuum-based fuse-CutOut or no current flows through the vacuum-based fuse-CutOut the first contact is held the fixed distance from the second contact at least in part by the steel wire,

wherein when the fuse wire electrically disconnects the first electrical connection rod from the second electrical connection rod the vacuum-based fuse-CutOut is configured to move the second contact away from the first contact, and

wherein when the fuse wire electrically disconnects the first electrical connection rod from the second electrical connection rod the vacuum-based fuse-CutOut is configured to move the second electrical connection rod away from the first electrical connection rod;

a release spring;

a bellows;

a support lid; and

an outer body, wherein the outer body surrounds the insulation part, the support lid, the bellows, and the release spring, wherein the support lid abuts the insulation part, and wherein the bellows are arranged between the insulation part and the release spring,

wherein when the fuse wire electrically disconnects the first electrical connection rod from the second electrical connection rod the release spring is configured to move the second contact away from the first contact.

13 . The vacuum interrupter device according to claim 12 , wherein the second contact is fixedly mounted to the second electrical connection rod.