US 9,136,081 B2Granted

D/C trip assembly

AssigneeEaton Corporation

InventorsKin Hang Leung, James Patrick Sisley, David Curtis Turner, David Edward Little, Paul Alan Merck

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Abstract

A D/C trip assembly for a circuit breaker is provided. The D/C trip assembly includes a magnet, a mounting assembly and an armature assembly. The mounting assembly includes a body, the mounting assembly body including a pivotal coupling. The armature assembly includes a magnetic body and a trip bar linkage, the trip bar linkage extending from the armature assembly body. The armature assembly body is structured to move between a first position, wherein the armature assembly body is close to the magnet, and a second position, wherein the armature assembly body is spaced from the magnet. The trip bar linkage is structured to move between a first position and a second position, the trip bar linkage positions corresponding to the armature assembly body positions. The trip bar linkage is structured to be coupled to a trip bar.

Claims18

Dependent claims

A D/C trip assembly structured to detect a D/C trip condition in an A/C circuit breaker, wherein said circuit breaker includes a housing assembly, a trip unit assembly, and a conductor assembly, said conductor assembly including a number of load buses, said trip unit assembly including a trip bar, said D/C trip assembly comprising:

a magnet coupled to a load bus;
a mounting assembly including a body, said mounting assembly body including a pivotal coupling;
said mounting assembly body structured to be coupled to said circuit breaker housing assembly and to position said mounting assembly body pivotal coupling adjacent said magnet;
an armature assembly including a magnetic body and a trip bar linkage, said trip bar linkage extending from said armature assembly body;
said armature assembly body pivotally coupled to said mounting assembly body pivotal coupling;
said armature assembly body structured to move between a first position, wherein said armature assembly body is close to said magnet, and a second position, wherein said armature assembly body is spaced from said magnet;
wherein, said trip bar linkage structured to move between a first position and a second position, said trip bar linkage positions corresponding to said armature assembly body positions;
and
said trip bar linkage structured to be coupled to said trip bar.

6 more elements

A circuit breaker comprising:

a housing assembly, a trip unit assembly, a conductor assembly, and a D/C trip assembly;
said housing assembly defining a number of channels;
said conductor assembly including a number of load buses;
each said load bus disposed in one said channel;
said trip unit assembly including a trip bar;
said D/C trip assembly including a magnet, a mounting assembly and an armature assembly;
said magnet coupled to a load bus;
said mounting assembly including a body, said mounting assembly body including a pivotal coupling;
said mounting assembly body coupled to said circuit breaker housing assembly and to position said mounting assembly body pivotal coupling adjacent said conductor assembly;
said armature assembly including a magnetic body and a trip bar linkage, said trip bar linkage extending from said armature assembly body;
said armature assembly body pivotally coupled to said mounting assembly body pivotal coupling;
said armature assembly body structured to move between a first position, wherein said armature assembly body is close to said magnet, and a second position, wherein said armature assembly body is spaced from said magnet;
wherein, said trip bar linkage structured to move between a first position and a second position, said trip bar linkage positions corresponding to said armature assembly body positions;
and
said trip bar linkage coupled to said trip bar.

12 more elements

Dependencies are inferred from the claim text.

Facts

Application: 14/133,691Filed 19 Dec 2013
Published: US 2015/0179380 A125 Jun 2015
Granted: 15 Sep 2015
Term ends: Not estimatedThe source records don’t support an estimate.

Classification7 codes

H01H 71/24
Automatic release mechanisms with or without manual release: electromagnetic mechanisms
H01H 50/18
Magnetic circuit arrangements: movable parts of magnetic circuits, e.g. armature
H01H 50/643
Driving arrangements between movable part of magnetic circuit and contact: intermediate part performing a rotating or pivoting movement
H01H 71/2472
Electromagnetic mechanisms: with rotatable armatures