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WhichExplosion-ProofLevelIsHigher,T4orT6|TechnicalSpecifications

Technical Specifications

Which Explosion-Proof Level Is Higher, T4 or T6

T6 is the highest grade available.

Temperature level IEC/EN/GB 3836The highest surface temperature of the equipment T [℃]Lgnition temperature of combustible substances [℃]
T1450T>450
T2300450≥T>300
T3200300≥T>200
T4135200≥T>135
T5100135≥T>100
T685100≥T>8

The ‘T’ stands for temperature rating, reflecting the critical temperature for gas explosions in an environment. For instance, if the explosion temperature of a flammable gas is 150°C, then explosion-proof products with ratings of T4, T5, or T6 must be chosen.

With a maximum temperature limit of 85°C, T6 is considered the best and safest option and can serve as a replacement for other products.

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