What Is the Temperature of Explosion-Proof Level AT1

In the realm of explosion-proof electrical certification, the “T” category designates temperature groups, where T1 signifies that the device’s maximum surface temperature remains below 450°C.

III	C	T 135°C	Db	IP65
III Surface dust		T1 450°C	Ma	IP65
		T2 300°C	Mb
		T3 200°C
	A Flammable flying flocs		Da
		T4 135°C
			Db
	B Non conductive dust	T2 100°C	Dc
	C Conductive dust	T6 85°C

Predominantly, explosion-proof electrical equipment is classified into temperature groups T4, T5, and T6. T3 classifications exist but are relatively rare.