BHC-DN20-B防爆三通穿线盒 产品选型：
A: 直通 BHC-A-G1/2 BHC-A-G3/4 BHC-A-G1 BHC-A-G1 1/2 BHC-A-G1 1/4 BHC-A-G2 BHC-A-G2 1/2 BHC-A-G3    BHC-A-G4
B: 三通 BHC-B-G1/2 BHC-B-G3/4 BHC-B-G1 BHC-B-G1 1/2 BHC-B-G1 1/4 BHC-B-G2 BHC-B-G2 1/2 BHC-B-G3    BHC-B-G4
C: 四通 BHC-C-G1/2 BHC-C-G3/4 BHC-C-G1 BHC-C-G1 1/2 BHC-C-G1 1/4 BHC-C-G2 BHC-C-G2 1/2 BHC-C-G3    BHC-C-G4
D: 右弯通 BHC-D-G1/2 BHC-D-G3/4 BHC-D-G1 BHC-D-G1 1/2 BHC-D-G1 1/4 BHC-D-G2 BHC-D-G2 1/2 BHC-D-G3    BHC-D-G4
E: 左弯通 BHC-E-G1/2 BHC-E-G3/4 BHC-E-G1 BHC-E-G1 1/2 BHC-E-G1 1/4 BHC-E-G2 BHC-E-G2 1/2 BHC-E-G3    BHC-E-G4
F: 后盖弯通 BHC-F-G1/2 BHC-F-G3/4 BHC-F-G1 BHC-F-G1 1/2 BHC-F-G1 1/4 BHC-F-G2 BHC-F-G2 1/2 BHC-F-G3    BHC-F-G4
G: 后盖三通 BHC-G-G1/2 BHC-G-G3/4 BHC-G-G1 BHC-G-G1 1/2 BHC-G-G1 1/4 BHC-G-G2 BHC-G-G2 1/2 BHC-G-G3    BHC-G-G4
H: 元宝型 BHC-H-G1/2 BHC-H-G3/4 BHC-H-G1 BHC-H-G1 1/2 BHC-H-G1 1/4 BHC-H-G2 BHC-H-G2 1/2 BHC-H-G3    BHC-H-G4

BHC-DN20-B防爆三通穿线盒适用范围
适用于爆作性气体环境1区、2区场所；
适用于可燃性粉尘环境20区、21区、22区危场所。
适用于IIA、IIB、IIC类爆作性气体环境
适用于T1-T6(T4)组温度组别;
广泛用于石油开采、炼油、化工、军工等危险环境场所为照明\电办及控制

BHC-DN20-B防爆三通穿线盒产品特色：
外壳采用铸铝合金或铸钢，防爆接线盒表面高压静电喷塑；
进出线口有多种方式及规格；
外露紧固件为不锈钢材质；
进出线口螺纹可特制，可制成公制螺纹、防爆接线盒NPT螺纹等形式；
钢管布线、防爆接线盒电缆布均可；
如果要求IIC类、增安型或粉尘防爆防爆接线盒请注明；