If you want to guarantee optimum residual current protection with maximum system availability, the DFS 2/4 B SK is the right solution. For residual current circuit-breakers with characteristic curve SK, the frequency response of the tripping current is designed so that residual currents with high frequencies as opposed to the rated frequency are detected with significantly reduced sensitivity. Undesired trips caused by leakage currents can therefore be widely avoided.
- high installation availability
- tripping characteristic curve optimised for installations with high operational leakage currents
- with the ability to detect residual currents up to 150 kHz, it exceeds the requirements of the relevant device standard
