25 Year Industrial Explosion-Proof Manufacturer
Technical Article
Technical Comparisons

Which Level of Explosion-Proof Is Higher, CT5 or CT6

The CT6 explosion-proof classification is notably high. Both models are designated as Class C in terms of explosion safety, with T5 and T6 indicating the maximum surface temperatures for the equipment.

Temperature Classification for Electrical EquipmentMaximum Permissible Surface Temperature of Electrical Equipment (°C)Gas/Vapor Ignition Temperature (°C)Applicable Equipment Temperature Class
T1450>450T1~T6
T2300>300T2~T6
T3200>200T3~T6
T4135>135T4~T6
T5100>100T5~T6
T685>85T6

The selection from T1 to T6 is guided by the flash points of hazardous materials, with T6 providing greater safety compared to T5, thus suitable for a broader range of hazardous environments. The appropriate rating is determined based on factors such as the power output, heat generation, and the flash points of the hazardous materials involved.

Dana Lin
Dana Lin Senior Compliance & Safety Engineer

Specializes in global explosion-proof standards (ATEX/IECEx) and rigorous technical compliance, providing the foundational engineering data for industrial safety.

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