The Difference Between Explosion-Proof Level CT1 and CT2

The distinction stems from varying temperature classifications, with surface temperatures arranged in descending order from T1 to T6. As a result, CT2 boasts a higher explosion-proof rating and enhanced safety.

Temperature Class IEC/EN/GB 3836	Maximum Surface Temperature of Equipment T [°C]	Ignition Temperature of Combustible Substances [°C]
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

CT surpasses BT, offering the widest coverage. Specifically designed for acetylene, CT excels in environments where BT is unsuitable for use.