Wehewehe Pōkole:

Nui

S7 he hana palena kiʻekiʻe o ke au e kaupalena i ka ikehu luku ma muli o ke kaapuni pōkole i ka nui loa. Noi: No ka pale ʻana i nā kaula a me nā lakots e kū'ē i ka overload a me ka pōʻai pōkole.

Nā lula laulā no ke koho ʻana iā MCB.

ʻIkepili loea o ka pūnaewele ma kahi i noʻonoʻo ʻia:

ʻO nā ʻōnaehana honua, ke au pōkole ma kahi hoʻonohonoho o ka mea haki kaapuni. pono ia e mau loa emi ma mua o ka hiki ke haki o kēia hāmeʻa, ka uila maʻamau o ka pūnaewele.

Aia he 3 mau ʻano piʻo no ka hana magnetic:

Ka pale ʻana o ke kūlou B (3-5In) a me ka kaohi ʻana o nā kaapuni e kūʻē i nā kaula lōʻihi ma TN a me IT SYSTEMS.

ka pale ʻana a me ka kaohi ʻana o ke kaapuni C (5-10In) e kūʻē i nā overloads a me nā kaapuni pōkole; ka palekana no nā ukana resistive a me inductive me ke au inrush haʻahaʻa.

ka pale ʻana a me ka kaohi ʻana o nā kaapuni e kūʻē i nā overloads a me nā kaapuni pōkole o ke kūlou D (10-20In); ka palekana no nā kaapuni e hoʻolako ana i nā ukana me ke au inrush kiʻekiʻe ma the ka pani ʻana o ke kaapuni (LV/LV nā mea hoʻololi, nā kukui haki).