Circuit-breaker comprising optimized housing stabilisation by means of fixed contacts with an interlocking action

Patent metadata

Field	Value
Publication number	US-9384908-B2
Application number	US-201214127208-A
Country	US
Kind code	B2
Filing date	Sep 3, 2012
Priority date	Sep 21, 2011
Publication date	Jul 5, 2016
Grant date	Jul 5, 2016

Abstract

A circuit breaker includes a sliding contact, in which a movable contact that is mounted on a spring is located, the contact lying opposite a fixed contact. In an embodiment, the fixed contact has a horn-shaped contour that engages in mating contours of the switching chamber walls of the circuit breaker.

First claim

The invention claimed is:

1. A power circuit breaker comprising:
a housing;
a contact slide accommodating device within the housing;
a contact slide;
a fixed switching piece including a horned contour in the form of two webs which are aligned parallel to one another and which are spaced apart from one another by a cutout; and
a movable switching piece, mounted on a spring arranged in the movable switching piece opposite the fixed switching piece, the horned contour of the fixed switching piece being configured to engage in mating contours on switching chamber walls of the power circuit breaker, wherein the contact slide accommodating device has mating contours that extend between the horned contour and a tab in the cutout.

2. The power circuit breaker of claim 1 , wherein the fixed switching piece is U-shaped with two limbs and a transition region formed in a bend of the fixed switching piece, and wherein the transition region forms the horned contour.

3. The power circuit breaker of claim 1 , wherein the tab, is an extension of a limb of the fixed switching piece, the tab extending into the cutout thereby enlarging a resting area for soldering contacts of the power circuit breaker.

4. The power circuit breaker of claim 1 , wherein current flow is formed via the horned contour of the fixed switching piece.

5. The power circuit breaker of claim 2 , wherein current flow is formed via the horned contour of the fixed switching piece.

6. The power circuit breaker of claim 1 , wherein the horned contour of the fixed switching piece engages in a mating contour formed between the contact slide accommodating device and the switching chamber walls of the power circuit breaker.

Assignees

• Spies Alexander
• Siemens Ag

Inventors

• Spies Alexander

Classifications

• H01H1/2008 Primary

  Facilitate mounting or replacing contact bridge and pressure spring on carrier (H01H11/0012 takes precedence) · CPC title

• H01H1/06 Primary

  characterised by the shape or structure of the contact-making surface, e.g. grooved · CPC title

• H01H73/045

  Bridging contacts · CPC title

• H01H71/0214

  Housing or casing lateral walls containing guiding grooves or special mounting facilities (H01H71/0221 takes precedence) · CPC title

• H01H71/0257

  Strength considerations · CPC title