Yana da ƙarfin dumama mai ƙarfi. Ana amfani da shi galibi azaman babban maɓalli ga akwatin kayan lantarki na haɗakar ƙarshe, da akwatin haɗa haske, da kuma don sarrafa injuna daban-daban da ƙananan kayan aikin lantarki masu ƙarfi, ba shi da aikin kariyar gajerun hanyoyin ɗaukar kaya.
| Ƙarfin wutar lantarki mai ƙima | Sanduna 1:250V Sanduna 2,3,4:400V |
| Matsayin halin yanzu na tafiye-tafiye | 16,20,32,40,63.100A |
| Yarda da mizani | IEC60947-3BS5419 VDE0660 |