This product is a 20mm diameter varistor with a rated voltage of 271V, a rated power of 1W, and a rated energy of 382J. It is certified by UL, CSA and VDE.
This document provides the full technical data for the Wurth Elektronik 820571311 standard disc varistor (7 mm diameter). It lists electrical characteristics such as breakdown voltage, clamping voltage and peak current, as well as mechanical dimensions and packaging details.
The sheet also describes the required test and environmental reliability procedures, including humidity, temperature cycling, vibration, and soldering tests, together with certification information (UL, CSA, VDE). This manual is written in German.
| Diameter | 7 mm |
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The part number is 820571311.