23 Year Industrial Explosion-Proof Manufacturer

Explosion-Proof Level Db

Db represents a new national standard in explosion-proof markings and protection levels, specifically designed for devices in dust environments applicable to Zones 21 and 22.

IIICT 135℃DbIP65
III
Surface dust
T1 450℃Ma IP65
T2 300℃Mb
T3 200℃
A
Flammable flying flocs
Da
T4 135℃
Db
B
Non conductive dust
T2 100℃Dc
C
Conductive dust
T6 85℃

An example is DIP A21 TA T6 Db DIP, indicating a device for dust environments; if labeled as Ex, it indicates suitability for gas environments.

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