BDZ52 Explosion Proof Circuit Breaker Applications: Explosive gas atmosphere Zone 1 and Zone 2 Combustible dust areas Zone 21 and Zone 22 Explosive gas mixture classification IIA, IIB, IIC Explosive gas ignition temperature group T1-T6(T4) Technician specifications Meet a criterion:GB3836.1, GB3836.2, GB3836.3, GB12476.1, GB12476.5,IEC60079-0, IEC60079-1, IEC60079-7, IEC61241-0,IEC61241-1,EN60079-0,EN60079-1, EN61241-0, EN61241-1-1 Explosion-proof mark: Exd II BT4 Gbã?�Exd II CT4 Gbã?�Exde II BT4 Gbã?�Exde II CT4 Gbã?�ExtD A21 IP66 T130? Rated voltage:AC220V/380V Rated current:MCB¤63A 63A