产品名称: BZC51防爆操作柱（ⅡB）
适用范围 Application
1区、2区危险场所.
IIA、IIB、类爆炸性气体环境.
Can be used in Zone 1and Zone 2 dangerous places.
Can be used in IIA、IIB group explosive atmosphere.
型号含义 Model implication
总单元含义 Applicatinon of chief part
第一单元含义 Application of first part 第二单元 Application of second part
第三单元 Application of third pqrt 第四单元 Application of third part