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.
