The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 21, 2026
Filed:
Jul. 15, 2022
Abb Schweiz Ag, Baden, CH;
Martin Zlatanski, Küsnacht, CH;
Yannick Maret, Dättwil, CH;
Wojciech Piasecki, Cracow, PL;
Matija Varga, Zürich, CH;
ABB Schweiz AG, Baden, CH;
Abstract
A circuit breaker is connected between an input supply line and an output supply line of a low-voltage electrical system and comprises a test signal transceiver and evaluator. The test signal transceiver comprises a first transceiver section being capacitively or inductively coupled, at a first coupling point, with the input supply line, and a second transceiver section being inductively coupled, at a second coupling point, with the input or output supply line. One of the first and second transceiver section is a test signal transmitter configured to generate and inject an AC test signal into the input or output supply line, and the other one of the first and second transceiver section is a test signal receiver configured to receive the test signal from the input or output supply line. A test signal evaluator is configured to determine the state of the circuit breaker from the received test signal.