High Energy varistor has better energy absorption function than the general series ones. The maximum surge current at 8/20us waveform is 40kA. This part is UL1449 forth edition listed.

This series is cross to EPCOS B40K series.

1. The inside varistor disc is 34mm, square shape
2. AC voltage 300V;
3. Varistor voltage 510V.
4. Peak Current: 40kA

5. The part number is MYE40-511