# D Series Large-Disc High-Energy Metal-Oxide Varistors

> Large-disc high-energy metal-oxide varistors for surge protection in industrial and renewable-energy equipment. V1mA 200–1,800 V, disc size 32–53 mm.

- Series code: D
- Product line: [Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/) › High-energy varistors (medium and large disc)
- Part numbers: Part-number list on request
- Page: https://www.songtian-ste.com/en/products/metal-oxide-varistors/d-high-energy/
- Chinese version: https://www.songtian-ste.com/zh/products/metal-oxide-varistors/d-high-energy/
- [Ask AI about this series](https://www.songtian-ste.com/en/products/metal-oxide-varistors/d-high-energy/?ask=Help%20me%20choose%20a%20part%20from%20the%20STE%20D%20series.)

## Key specifications

| Parameter | Value |
| --- | --- |
| Nominal varistor voltage V1mA | 200–1,800 V |
| Disc size | 32–53 mm |
| Operating temperature | −40 °C to +85 °C |
| Material | ZnO |

## Engineering details

Full specifications and part numbering on request.

## Datasheets & approval documents

Documents for this series are available on request.

## More in high-energy varistors

- [R Series High-Energy Metal-Oxide Varistors](https://www.songtian-ste.com/en/products/metal-oxide-varistors/r-high-energy/)