Solid-state circuit breaker includes airgap operating mechanism configured to operate in limited space

Patent metadata

Field	Value
Publication number	US-12176166-B2
Application number	US-202217820790-A
Country	US
Kind code	B2
Filing date	Aug 18, 2022
Priority date	Aug 18, 2022
Publication date	Dec 24, 2024
Grant date	Dec 24, 2024

Abstract

A solid-state circuit breaker comprises an airgap operating mechanism including components and a housing that houses the components of the airgap operating mechanism such that each component in the operating mechanism is configured to operate in a way that only limited amount of space is required to achieve functions of ON, OFF, and TRIP. The components of the operating mechanism include a contact arm, a handle, and an interface feature to interface between the handle and the contact arm to apply a force thereon. The interface feature is configured to adjust the contact arm ensuring an optimal positioning. The components of the operating mechanism include a double pivot of the contact arm and a handle feature in that the contact arm has two-pivot legs, an armature, an armature pivot feature and a stopper feature, a cradle, and a stopper pin configured to stop the cradle during TRIP operation.

First claim

What is claimed is:

1. A solid-state circuit breaker comprising:
an airgap operating mechanism including components; and
a housing that houses the components of the airgap operating mechanism such that each component in the operating mechanism is configured to achieve functions of ON, OFF, and TRIP, wherein the components of the operating mechanism include:
a contact arm,
a handle,
an interface feature between the handle and the contact arm to adjust the contact arm ensuring an optimal positioning,
a double pivot of the contact arm and a handle feature in that the contact arm has two-pivot legs to provide a double pivot of the contact arm and the handle such that the two-pivot legs reduce a pop-out force, which is a detrimental force from an operating spring pushing parts out of the solid-state circuit breaker during an assembly process,
an armature,
an armature pivot feature and a stopper feature that work together to allow the armature to be able to have a stable pivot and a reset mechanism,
a cradle, and
a stopper pin configured to stop the cradle during a TRIP operation utilizes less space in comparison to a traditional method of using a thick plastic wall to surround the cradle at its stop.

2. The solid-state circuit breaker of claim 1 , wherein the interface feature is configured to adjust the contact arm ensuring the optimal positioning when the operating mechanism is at an ON state so that the interface feature enables the operating mechanism to have a specific pre-determined force which reduces contact resistance and have a mechanism stability at an ON position.

3. A solid-state circuit breaker comprising:
an airgap operating mechanism including components; and
a housing that houses the components of the airgap operating mechanism such that each component in the operating mechanism is configured to achieve functions of ON, OFF, and TRIP,
wherein the components of the operating mechanism include:
a contact arm,
a handle,
an armature,
an armature pivot feature and a stopper feature that work together to allow the armature to be able to have a stable pivot and a reset mechanism,
a cradle, and
a stopper pin configured to stop the cradle during a TRIP operation utilizes less space in comparison to a traditional method of using a thick plastic wall to surround the cradle at its stop.

4. The solid-state circuit breaker of claim 3 , wherein the components of the operating mechanism include:
an interface feature to interface between the handle and the contact arm to apply a force thereon, the interface feature is configured to adjust the contact arm ensuring an optimal positioning.

5. The solid-state circuit breaker of claim 4 , wherein the interface feature is configured to adjust the contact arm ensuring the optimal positioning when the operating mechanism is at an ON state so that the interface feature enables the operating mechanism to have a specific pre-determined force which reduces contact resistance and have a mechanism stability at an ON position.

6. A solid-state circuit breaker comprising:
an airgap operating mechanism including components; and
a housing that houses the components of the airgap operating mechanism such that each component in the operating mechanism is configured to achieve functions of ON, OFF, and TRIP,
wherein the components of the operating mechanism include:
a contact arm,
a handle,
a double pivot of the contact arm and a handle feature in that the contact arm has two-pivot legs to provide a double pivot of the contact arm and the handle such that the two-pivot legs reduce a pop-out force, which is a detrimental force from an operating spring pushing parts out of the solid-state circuit breaker during an assembly process,
an armature,
an armature pivot feature and a stopper feature that work together to allow the armature to be able to have a stable pivot and a reset mechanism,
a cradle, and
a stopper pin configured to stop the cradle during a TRIP operation utilizes less space in comparison to a traditional method of using a thick plastic wall to surround the cradle at its stop.

Assignees

• Siemens Industry Inc

Inventors

• Kim Raiden Jay
• Yang Guang
• Titus Solomon R
• Shmukler Mark I
• Nguyen Huy

Classifications

• H02H9/02

  responsive to excess current {(current limitation for voltage regulators G05F1/573; disconnection after limiting H02H3/025)} · CPC title

• H01H1/225

  the supporting member being pivotable · CPC title

• H01H71/123 Primary

  using a solid-state trip unit (circuits H02H) · CPC title

• H01H71/2463

  with plunger type armatures · CPC title

• H01H71/521

  Details concerning the lever handle · CPC title