Wehewehe Pōkole:

ʻO ka mea haki kaapuni hihia i hoʻoheheʻe ʻia ʻo M4 series, he kaapuni pili ia o AC 50/60Hz, ka volta insulation i helu ʻia he 690 V (M4-125 500V), ka volta hana i helu ʻia he AC 690V a i ʻole ma lalo, ka mana hana i helu ʻia he 12.5-1600A, no ka hoʻolaha ʻana i ka ikehu o ka uila a me ka hana pinepine ʻole a me ka haki ʻana i ke kaapuni ma ke kūlana maʻamau. Hāʻawi ʻia nā mea haki kaapuni me ka hana o ka pale ʻana i ka overload a me ke kaapuni pōkole a me ka undervoltage. Hoʻokō nā mea haki kaapuni me ke kūlana o IEC60947-2. He pālua ka insulation o nā mea haki kaapuni (Ma m = 250A a i ʻole ma luna), ua hoʻokaʻawale ʻia ke kaapuni hoʻomalu o nā mea komo me ke kaapuni nui, a ʻaʻole pono e wehe i ka uhi o ka mea haki kaapuni i ka wā e hoʻokomo ai i nā mea komo.