Boemo ba Bopaki ba ho phatloha Db

Db e emetse maemo a macha a naha a matshwao a thibelang ho phatloha le maemo a tshireletso, e etselitsoeng ka ho khetheha lisebelisoa tse tikolohong ea lerole e sebetsang ho Zone 21 le 22.

III	C	T 135 ℃	Db	IP65
III Lerole la bokahodimo		T1 450℃	Mma	IP65
		T2 300℃	Mb
		T3 200℃
	A Mehlape e fofang e tukang		Le
		T4 135℃
			Db
	B Non conductive lerole	T2 100℃	Dc
	C Lerōle le tsamaisang	T6 85℃

Mohlala ke DIP A21 TA T6 Db DIP, ho bontsha sesebedisoa bakeng sa dibaka tsa lerole; haeba e ngotsoe e le Ex, e bontša ho tšoaneleha bakeng sa libaka tsa khase.