CMTW1 jerin iska kewaye watse ne m ga ikon rarraba cibiyar sadarwa tare da AC50/60 Hz, rated irin ƙarfin lantarki 400/415/600/690V, da kuma rated halin yanzu 200 ~ 6300A.Wannan na'ura mai juyi yana da aikin kariya na hankali da ingantaccen zaɓin kariya,
Samfurin ya dace da ma'aunin IEC/EN 60947-2.