Protection switch

US7978033B2 · kind B2 · utility

Assignee

• Ellenberger & Poensgen GmbH

Inventors

• Klaus Loos · Winkelhaid, DE
• Markus Birner · Zirndorf, DE

Key dates

• Filing date: Dec 12, 2008
• Grant date: Jul 12, 2011
• Expiry date: Aug 28, 2029

Classification

• Technology area (CPC H): Electricity
• CPC primary: H01H2071/086
• WIPO field: Electrical machinery, apparatus, energy
• WIPO sector: Electrical engineering

Abstract

A protection switch, particularly for fast switching, includes at least one single-pole protection switch module having a housing, a movable contact mounted on a switching arm for pivoting against a fixed contact between closed and open positions, a manual operating mechanism manually setting the switching arm between the closed and open positions, and a tripping mechanism automatically resetting the switching arm into the open position upon a tripping condition. The switching arm is spring-loaded in direction of the open position and includes a latch lever latching with the manual operating mechanism, and a contact lever carrying the moveable contact. The latch lever is pivotably mounted on the housing and joined to the contact lever by a hinge. The tripping mechanism includes a trip slider to be displaced by a trip device from a ready position towards a tripping position, to load the switching arm for rotationally fixing the contact lever.