Patent · US Active

Overvoltage protection device with varistors

US10607754B2 · kind B2 · utility

0Cited by

6References

13Claims

0Family size

Assignee

PHOENIX CONTACT GMBH & CO. KG · DE

Inventors

Rainer Durth · Niederheesten, DE
Jan-Erik Schmutz · Detmold, DE
Maik DITTERT · Bad Salzuflen, DE

Key dates

Filing date	Aug 16, 2018
Grant date	Mar 31, 2020
Priority date	—
Expiry date	Aug 16, 2038

Classification

Technology area (CPC H)Electricity
CPC primaryH01C13/02
WIPO fieldElectrical machinery, apparatus, energy
WIPO sectorElectrical engineering

Abstract

The invention relates to an overvoltage protection device with varistors, wherein a first varistor and a second varistor are connected in series, wherein the first varistor has a thermal disconnector, wherein the first varistor has a lower operating voltage than the second varistor, and wherein the first varistor has a lower energy absorption capacity than the second varistor, with the first varistor heating up more in the event of an overload and thereby causing the thermal disconnector to disconnect.

Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.