... . May select normal or simple connection Application ( Electric meter ):Type DDS13521B single phase DIN-rail watt- ... features: Good reliability,small volume,light weight,specious nice appearance,convenient installation,etc. Technical Parameters ( Electric meter )Type : ... for 1 minute impulse voltage 6 KV TypeDDS13521B ( Electric meter )AccuracyClass1 Class2Rated voltage (V)220v,120vRated current ...