Quod CREPITUS-Probatur Level superior, BT4 vel BT6 *

Secundum nationalibus signis ad praesidium electrica explosione, tum BT4 et BT6 cadunt sub Classis IIB.

Temperature coetus electrica apparatu	Maxime permissam superficiem temperatus electrica apparatu (℃)	Gas / vapor ignitio temperatus (℃)	Lorem fabrica temperatus gradus
T1	450	450	T1~T6
T2	300	300	T2~T6
T3	200	200	T3~T6
T4	135	＞135	T4~T6
T5	100	100	T5~T6
T6	85	85	T6

tamen, the ‘T’ classification pertains to the temperature rating of explosion-proof electrical devices. technis ut T6 indicatur, temperatura superficiei nullam altiorem quam LXXXV°C servare debet, T5 non excederet C ° C *, and T4 must not surpass 135°C.

The lower a device’s maximum surface temperatus, the less likely it is to ignite atmospheric gases, thereby enhancing safety. ergo, the explosion-proof rating of BT6 exceeds that of BT4.