Short answer: surge arrester models should be indexed by rated voltage, MCOV, discharge current, housing material, creepage distance and accessory set.
| YH10W polymer arrester | Polymer-housed metal oxide surge arrester, often selected for outdoor distribution and substation use. |
|---|---|
| Y10W porcelain arrester | Porcelain-housed metal oxide surge arrester, often used when porcelain housing is specified. |
| 10kA class | Common for line and substation protection. Confirm nominal discharge current and energy class. |
| Accessories | Specify bracket, disconnector, surge counter, insulating base or cable lead when required. |
Two arresters with the same rated voltage may not be equivalent if MCOV, creepage distance or discharge class is different.
Contact sales