23 Year Industrial Explosion-Proof Manufacturer

Whatisthetemperatureforexplosion-proofLevelT4|ExplanationOfTerms

Explanation Of Terms

What is the temperature for explosion-proof Level T4

The T4 classification specifies that electrical devices must operate with a maximum surface temperature of no more than 135°C. Products with a T6 rating are applicable across various temperature groups, whereas T4 devices are compatible with T4, T3, T2, and T1 conditions.

Temperature group of electrical equipmentMaximum allowable surface temperature of electrical equipment (℃)Gas/vapor ignition temperature (℃)Applicable device temperature levels
T1450>450T1~T6
T2300>300T2~T6
T3200>200T3~T6
T4135>135T4~T6
T5100>100T5~T6
T685>85T6

The reason T6 is not typically used is that many devices, particularly those requiring high power or consisting of purely resistive circuits, are unable to achieve the stringent low-temperature conditions stipulated by the T6 classification.

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