Temperature Code and Class

The temperature class define the maximum operating temperatures on the surface of the equipment  which should not exceed the ignition temperature of the surrounding atmosphere.Ignition temperature is the minimum temperature required, at normal atmospheric pressure in the absence of a spark  or flame, to set afire or cause self sustained combustion independently of the heating or heated element.

                                   Temperature Classification Chart

Temperature  code		Maximum  Surface Temperature
North American	European	°C	°F
T1	T1	450	842
T2	T2	300	572
T2A	---	280	536
T2B	---	260	500
T2C	---	230	446
T2D	---	215	419
T3	T3	200	392
T3A	---	180	356
T3B	---	165	329
T3C	---	160	320
T4	T4	135	275
T4A	---	120	248
T5	T5	100	212
T6	T6	85	185