O le fea vaega e le mafai ona pa le DIIBT4

O le igoa dIIBT4 e faasino ile Vasega II, Vasega B fa'ailoga fa'asao pa.

II	B	T4	Gb	IP64
Mine I	Methane	T1 450 ℃	Ma Extremely high level of protection	IP64
		T2 300 ℃
			Mb High level protection
		T3 200 ℃
I Surface Materials	Propane		Ga Extremely high level of protection
		T4 135 ℃
	Ethylene		Gb High level protection
		T5 100℃
	Hydrogen, Acetylene		Gc General level protection
		T6 85 ℃

The prefix ‘d’ denotes a flameproof type of enclosure, ua fuafuaina ina ia mafai ona i ai so o se pa i totonu e aunoa ma le faaleagaina o le pa ma puipuia le sosolo o le pa i fafo;

O lo'o fa'amaoti mai e le IIB le vaega o kesi e fa'aaogaina;

T4 signifies that the product’s maximum surface vevela remains below 130°C.