A na-etinye igbe nkesa nke HDB-M 3 na bọọdụ nkesa nchekwa ọnụ, isi mgba ọkụ bụ 100A-2P100A-3P disconnector mgba ọkụ, mgba ọkụ alaka bụ obere sekit nkesa. bọọdụ nkesa ọkụ SME-100A nwere ọrụ nke igbu oge na nchebe ibufe ngwa ngwa.