Current protection relay DER3/0D
earth-leakageDIN railIEC

current protection relay
current protection relay
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Measured/monitored value
current, earth-leakage
Other characteristics
DIN rail, IEC, differential
Tripping current

Max.: 30,000 mA

Min.: 0.03 mA


The DER3/0D or the earth differential relay is mainly used on LV networks in an alternative current of type TT and TN. It has a broad adjustment of threshold current dispersion and threshold for delay intervention. The device is designed in accordance with strict regulations. With this design, it meet the expectation to have a double need which are the safety of facility and the continuous service of industrial production. The relay consist of one intervention threshold, a control of opening coil and an auto-diagnostic made by led.


*Prices are pre-tax. They exclude delivery charges and customs duties and do not include additional charges for installation or activation options. Prices are indicative only and may vary by country, with changes to the cost of raw materials and exchange rates.