... up to 800 uA for 1p,2p ,3p, up to 600 uA for 1p+N,3p+N SPD surge arrester /surge ... up to 800 uA for 1p,2p ,3p,up to 600 uA for 1p+N,3p+N* Indication for damaged surge arrester* Offered ... in types:1p;1p+N;3p;3p+N3. ... following models of arresters:Model SPD-Bxxxx and HHG3-for systems with exceptionally high risk level .Mounted mainly ...