ʻO HDB-K series 1 pole switch K1 pahu i hoʻohana nui ʻia i ka ʻoihana a me nā ʻoihana mining e hoʻopili, wāwahi a pale i nā ʻōnaehana uila. Hiki i ka fuse o loko ke pale aku i nā ʻōnaehana uila mai ka overload a me ke kaapuni pōkole.
