Surge Homeopathy

I have two of these surge adapter in use. The lights are a little light. Otherwise, there are no complaints mechanically. The main problem is the lousy values ​​for the maximum overvoltage. For overvoltage protection it is necessary to pay particular attention to U_oc and U_p. U_oc describes the maximum permissible voltage at the input terminals (LN: phase-neutral; L / N-PE: conductor or zero and earth). U_p the maximum voltage at the output under these conditions, ie in the connected devices, prevails. U_oc should therefore be as high as possible and U_p low as possible. The maximum leakage current is less interesting, but is often used as a promotional tool.

I have a home yet Brennenstuhl surge protection for individual outlets and power strips (Premium and Premium-Protect in use). Here are some values ​​for U_oc and U_p:

LN: U_oc U_p L / N-PE: U_oc U_p
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AS-Schwabe 2.5kV 2.5kV 2kV 5kV
BS Single 6kV 6kV 1.8 kV 1.8 kV
BS-strips (P & PP) 20kV 1kV 20kV 1.5kV

An overvoltage between phase and zero is trapped as in AS-Schwabe only to 2.5kV and in this case almost everything still depends on the output. 2kV are too much for most electrical appliances (1 kV, 1.5 kV are normally momentarily still OK). An indirect lightning strike caused higher voltages than 2.5kV. The Brennenstuhl single outlet provides a rather marginal protection. For smaller surges that should still be sufficient. Only the power strips protect safe up to 20kV, which is sufficient in most cases.

Probably in the small single adapters simply not enough space or the cost of better components would be relatively too high in order to ensure better protection. If there were twice as expensive product with better protection would be better for me. Here in my opinion has been saved in the wrong places.