Nā hiʻohiʻona hoʻolālā
Ma hope o ka hoʻopili ʻia ʻana o ka hihia lula i hoʻopili ʻia me nā pilina a me nā loulou fuse, ua hoʻokumu ʻia nā kumu i ka hoʻoheheʻe ʻana a i ʻole ka riveting ʻelua i hiki ke hoʻolālā multiphase. ʻO RT19 he hanana ākea, a ʻo nā mea ʻē aʻe he hanana semi-hūnā. Aia he mau ʻelima piula i loaʻa e koho ai no ka waihona fiuse like o RT18N, RT18B, a me RT18C. Aia he ʻelua mau laina laina i loko no RT18N. Hoʻokomo ʻia kekahi me nā loulou fuse o ka nui e like me. ʻO ka mea ʻē aʻe he pilina paʻa mau me nā helu haki pālua. Hiki i ke anakahi kumu holoʻokoʻa ke ʻoki i ka mana. Hoʻokomo ʻia nā waihona RT18 a pau DIN rail, i waena o nā mea me ka RT18L i hoʻolako ʻia me ka laka palekana e kūʻē i ka hui-hewa i ka mokuʻāina haki.