Hoʻolauna i ka Molded Case Circuit Breaker (MCCB)

ʻO ka hoʻolauna ʻana o kaMea haki kaapuni hihia i hoʻoheheʻe ʻia (MCCB) ua hoʻololi i ke ʻano o kā mākou pale ʻana i nā kaapuni a me nā lako. Ua hoʻolālā ʻia kēia mea hana hou e ʻoki ponoʻī i ke kahe o ke au ke ʻoi aku ia ma mua o ka hoʻonohonoho huakaʻi, no laila e hāʻawi ana i ka palekana kumu e kūʻē i ka overload, kaapuni pōkole a me ka hewa honua. Aia ka MCCB i loko o kahi pahu plastik a hoʻohana i nā insulators plastik e hoʻokaʻawale i nā alakaʻi a me nā ʻāpana metala i hoʻokumu ʻia. Me kāna ʻano ākea o nā hiʻohiʻona a me nā koho, ʻo MCCB kahi hopena versatile a hilinaʻi hoʻi no nā ʻano noi like ʻole.

ʻO ka maʻamau, loaʻa i nā MCCB kahi ʻāpana huakaʻi thermal-magnetic, akā hiki ke hoʻolako ʻia nā hiʻohiʻona nui me nā mea ʻike huakaʻi solid-state. Hāʻawi kēia mau ʻāpana huakaʻi i ka hana kumu o ka wehe ʻana i kahi kaapuni inā loaʻa kahi hewa. Hiki ke hoʻokaʻawale ʻia nā huakaʻi i ʻelua ʻano: ka huakaʻi magnetic thermal a me ka huakaʻi uila, e ʻae ana i nā mea hoʻohana e koho maʻalahi i ka pale kūpono e like me kā lākou mau koi kikoʻī. Eia kekahi, loaʻa ka MCCB i nā ʻano helu like ʻole o kēia manawa me 16, 25, 30, 40, 50, 63, 80, 100, 125, 160, 200, 225, 250, 315, 350, 400, 500 a me 630A, e kūpono ana i nā ʻano ukana like ʻole.

ʻO kekahi o nā hiʻohiʻona nui o ka MCCB ʻo ia kona kūkulu paʻa i loko o kahi hale plastik. Hōʻoia kēia hoʻolālā e pale pono ʻia nā ʻāpana āpau o ka mea haki kaapuni hihia i hoʻoheheʻe ʻia mai nā kumu kaiapuni, e hoʻomaikaʻi ana i ka hilinaʻi a me ke ola lawelawe o nā lako. Eia kekahi, ʻo nā pilina kōkua, nā hoʻokuʻu undervoltage a me nā hoʻokuʻu shunt he modular nui a hiki ke hoʻopilikino maʻalahi ʻia a hoʻohui ʻia me nā hana hou e like me ka mea e pono ai. ʻOiai ʻo ka hoʻonohonoho paʻa o ka mea haki kaapuni hihia i hoʻoheheʻe ʻia e kaupalena i ka lawelawe ʻana, hāʻawi ia i ka maʻalahi o ka hana lima a me nā koho hoʻololi uila nui aʻe e hoʻokō i nā pono like ʻole o nā mea hoʻohana i nā noi like ʻole.

Hāʻawi pū ʻo MCCB i kahi koho o nā hoʻokuʻu uila overcurrent, i māhele ʻia i ʻelua ʻano: Class A a me Class B. Hāʻawi ʻo Class B MCCB i nā hiʻohiʻona palekana ʻekolu pae kiʻekiʻe, e kūpono ana no nā noi me nā koi hilinaʻi kiʻekiʻe a me ka hana. Ma ka ʻaoʻao ʻē aʻe, ʻoi aku ka nui o ka mākeke o Class A MCCB me ka thermal magnetic tripper ma muli o kona kumukūʻai kūpono. He kūpono loa nā ʻano ʻelua o MCCB no nā ʻano noi ʻoihana a me nā ʻoihana like ʻole, e hāʻawi ana i ka pale hewa uila e pono ai a me ka hōʻoia ʻana i ka palekana a me ka hilinaʻi o nā ʻōnaehana uila.

I ka hōʻuluʻulu manaʻo, ʻo nā mea haki kaapuni hihia plastik (MCCB) he mau ʻāpana koʻikoʻi i nā ʻōnaehana uila hou, e hāʻawi ana i nā hiʻohiʻona pale holomua a me ka hana hilinaʻi. Me kona hale plastik i hoʻopaʻa ʻia, nā ʻāpana modular hiki ke hoʻopilikino ʻia a me nā koho ʻāpana huakaʻi, kūpono ka MCCB no nā ʻano ukana like ʻole a me nā noi. Inā paha e pale ana i nā kaapuni lālā a i ʻole e hāʻawi ana i ka pale pae kiʻekiʻe 3, he mau mea hana maʻalahi a koʻikoʻi nā MCCB no ka hōʻoia ʻana i ka palekana a me ka hilinaʻi o nā ʻōnaehana uila.