DC End Device Protection

Class I and II SPDs are insufficient to protect sensitive electronic elements. Overvoltage waves are slowly increasing at greater frequency, reoccurring and threatening devices.

The incidence of low-value surges is still too high for electronic elements and is common in the object itself, often caused by activation switching of major appliances, inductive devices, and motors, or industrial System Operation failures. SPDs in this classification are intended to protect sensitive electronic installations in LPZ 2-3 per IEC 62305.