What is the difference between Ex d IIC T4 and American standard explosion protection ratings?

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Dear seniors, I would like to ask about the differences between various explosion protection ratings. I’ve searched for a lot of information online, and I found that Ex d IIC T4 means the following: Ex: an explosion protection marking; d: intrinsically safe electrical equipment – equipment in which the components that could ignite explosive mixtures are enclosed within a housing capable of withstanding the pressure generated by such explosions, thereby preventing the spread of fire from those explosive mixtures to the surrounding area. Ⅱ: Equipment group C: Gas group T4: Temperature group 135℃. The higher the number, the lower the surface temperature of the device, which means it is safer. As for the explosion-proof standards in the United States and Canada, I have only found CSA/FM Class 1, Division 1, Explosion Proof; CSA Class I, Div 2, Hazardous Locations (Groups A, B, C, D); Class II (Groups E, F, G); and Class III. I know that in the U.S. classification system, Group A and Ex d IIC T4 both refer to acetylene. So does this mean that these two standards are the same?