Ihe mkpuchi sekit H3 nke e ji aka mee bụ ihe nchekwa nchekwa kachasị elu.lt nwere nkọwapụta ndị gafere ọkọlọtọ mba ụwa maka nchekwa. Usoro mmeghe ozugbo nke ọkọlọtọ IEC kwadoro maka nchekwa igwe - bụ ihe dị mkpa n'ọtụtụ ụdị. Sistemụ mkpọchi nchekwa pụrụ iche maka MCCBs nke a na-etinye na-eme ka MCCB ghara ibu ọkụ mgbe a na-etinye ya ma ọ bụ na-ewepụ ya.
· Nhazi ngwa dị mfe
· Nhazi MCCB nke ejiri okpukpu abụọ kpuchie
· Mmụba okpomọkụ dị ala
- Elu voltaji mkpuchi
| A(mm) | |
| 1P | 24.8 |
| 2P | 49.5 |
| 3P | 74.5 |
| 4P | 99.5 |
| 1P | 25KA |