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Direct current systems                           DEHNsecure M 1 220 (FM) arresters are used, for instance,
                                                             in d.c. systems for directly supplying d.c. drives, control
                                                             circuits and all kind of battery-operated supply systems.






               DEHNsecure M 1 220 (FM)                         Technical data

                                                               SPD classification according to EN 61643-11  type 1
                Type              Part No.                     Max. continuous operating voltage (d.c.) U C  220 V
                DSE M 1 220 (FM)  971 120 (971 125)            Lightning impulse current (10/350 µs) I imp  25 kA
                                                               Voltage protection level U     < 2.5 kV
                                                                                P
                                                               Maximum direct current         2000 A








                    F                               F                               F
















                                                       < 5 m





            2-0 circuit in insulated systems  1-0 circuit in earthed systems  Feed-through wiring with F ≤ 125 A gG


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