What is the difference between explosion-proof levels CT4 and BT4?

1 Answers
Camila
07/29/25 10:22am
The differences between explosion-proof levels CT4 and BT4 are as follows: Different levels: The explosion-proof level of CT4 explosion-proof motors is ExdIICT4, while the explosion-proof level of BT4 explosion-proof motors is ExdIIBT4, with a lower protection level than CT4 explosion-proof motors. Different applicable ranges: CT has the widest range of applications. BT has a relatively narrower range. Different applicable gas environments: CT is an explosion-proof level for acetylene and hydrogen. If the environment contains gases like acetylene or hydrogen, CT-level explosion-proof motors must be used. BT, however, cannot be used in workplaces with acetylene gas and is only a medium-level explosion-proof definition.
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