Installation switchgear

US8093984B2 · kind B2 · utility

Assignee

• ABB AG · US

Inventors

• Manfred Hofmann · Hettstadt, DE
• Wolfgang Pump · Ehrenfriedersdorf, DE
• Ralf Wieland · Waldbrunn, DE
• Albert Stieger · Plankstadt, DE
• Joachim Majewski · Dossenheim, DE
• Roland Ritz · Dielheim, DE
• Klaus-Peter Eppe · Waldbrunn, DE
• Erwin Muders · Heidelberg, DE
• Joachim Becker · Schwetzingen, DE
• Rainer Ludovici · Eppelheim, DE
• Heinz-Erich Popa · Bammental, DE
• Wolfgang Suess · Bremen, DE

Key dates

• Filing date: Apr 24, 2008
• Grant date: Jan 10, 2012
• Expiry date: Jan 9, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01H71/40
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

An installation switching device includes a housing, a main contact point having an arc quenching chamber, an input terminal, an output terminal, an impact-style armature system configured to move the main contact point to an open position, a latching mechanism having a latching point and configured to open an isolating contact point disposed in a secondary current path parallel to a main current path, a main thermostatic bimetallic strip configured to act on the latching point to as to cause the main contact point to remain in the open position, a current limiting resistor disposed in the secondary current path, a selective thermostatic bimetallic strip disposed in the secondary current path and configured to act on the latching mechanism, a handle configured to act on the latching mechanism so as to open and close the main contact point, and a phase connecting rail.