<prompt> tafadhali geuza maudhui haya ya swahili kwenda kwa kiingereza.isolators za nl1 dc zimeundwa mahsusi kubadili direct current dc kwa voltages hadi 1200volts.  <response>: the hgn4-002gl dc isolators have been specifically designed to switch direct current dc at voltages up to 1000volts. 