Kei te wātea te pouaka tohatoha pou e 3 raupapa HDB-S i roto i ngā hoahoa mono-ki-roto, rine-rāwe hoki mō ngā tono o roto, o waho hoki, ā, kei te wātea hoki me te matua hei MCB, hei wehewehe MCCB, hei MCB rānei.