Jan Grunwald

Title: Jan Grunwald and His Circuit Breaker Casing Invention.

Introduction

Jan Grunwald is an inventor associated with Berlin, Germany, and Siemens Aktiengesellschaft. His patent work includes an invention concerning the casing of a circuit breaker designed for nominal currents above 250 amperes.

Latest Patents

Grunwald is credited with 1 patent: “Casing of a Circuit Breaker, in Particular of a Circuit Breaker for Nominal Currents Above 250A.” The invention describes a casing that allows at least one rigid busbar to be swung into contact with a switching pole mounted inside the casing.

The casing may have a cuboid bottom section with a rectangular base and two parallel rectangular side faces. Stays connect adjacent side faces, positioned away from the opposing openings. This arrangement allows a switching pole to be inserted between the stays and a rigid busbar to be swung through an opening to make contact with the pole. The components can be premounted separately, for example, in a switching cabinet.

Career Highlights

Grunwald’s documented patent contribution addresses the practical assembly and electrical connection of high-current circuit breakers. The design focuses on enabling a rigid busbar to connect with a switching pole after the casing and busbar have been premounted.

Collaborations

Grunwald is associated with Siemens Aktiengesellschaft. His listed coworkers include Katja Manthey and Torsten Ahlert.

Conclusion

Jan Grunwald’s patent describes a circuit breaker casing that supports the insertion of a switching pole and the connection of a rigid busbar, contributing a practical design for equipment rated above 250 amperes.