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Doepke has developed the new DFS4 F EV mixed-frequency-sensitive residual current circuit-breaker specifically for protecting charging points. By using this product, electricians can always stay on the safe side: it not only detects AC residual currents and pulsating DC residual currents, but also residual currents with mixed frequencies deviating from 50 Hz. What is special about the EV model is its integrated DC residual current detection. Because of this, the new residual current circuit-breaker trips reliably if smooth DC residual currents higher than 6 mA occur when an electric car is charged.
The 4 module width unit is easy to install and protects the charging point, as well as any upstream residual current circuit-breakers without DC residual current protection, against blinding. It has greater immunity to surge currents up to 3 kA, and is also lightning-resistant due to its short time delay. This reduces unwanted tripping overall.
Exhibitor: Doepke Schaltgeräte GmbH