Která úroveň nevýbušnosti je vyšší, T4 nebo T6

T6 is the highest grade available.

Teplotní úroveň IEC/EN/GB 3836	Nejvyšší povrchová teplota zařízení T [℃]	Teplota vznícení hořlavých látek [℃]
T1	450	T＞450
T2	300	450≥T＞300
T3	200	300≥T＞200
T4	135	200≥T＞135
T5	100	135≥T＞100
T6	85	100≥T＞8

The ‘T’ stands for temperature rating, reflecting the critical temperature for gas explosions in an environment. For instance, if the explosion temperature of a flammable gas is 150°C, then explosion-proof products with ratings of T4, T5, or T6 must be chosen.

With a maximum teplota limit of 85°C, T6 is considered the best and safest option and can serve as a replacement for other products.