BHR51防爆刀熔开关(ⅡB、ⅡC) BHR51 防爆刀熔开关(ⅡB、ⅡC)BHR51 Explosion-proof Type, Knife Fuse Switch (ⅡB、ⅡC)   1. 爆炸性气体环境危险场所：1区、2区；2. 可燃性气体、蒸气级别：ⅡA、ⅡB、ⅡC；3. 温度组别：T1~T4；4. 户内、户外 (IP54)。1. For the dangerous sites with explosive air mixture: 1 division、2 division;2. Flammable gas, steam class：ⅡA、ⅡB、ⅡC;3. Temperatures classification：T1~T4;4. Indoor and outdoor(IP54). 1. 铸铝合金外壳，表面喷塑；2. 适用于电压380V，电流10-400A电气装置和配电系统中作不频繁切换电路及短路保护用；3. 内装元件由刀开关和熔断器组合而成，能快速接通与分断；4. 钢管或电缆布线。1. Diecasted Al-alloy shell with plastic-sprayed surface;2. Apply to infrequenty change-over circuit and short-circuit protectionfor the electrical appliance at 380V and 10-400A and distributionsystem;3. In-built elements are made up of knife switch and fuse It can be quicklycut on/off;4. Steelpipe and cable wiring. 额定电压Ratedvoltage (V)额定电流Ratedcurrent (A)极数Pole'snumber防爆标志Explosion-proofing marker防护等级Protectioncategory防腐等级Corrosion-proofing grade进线口螺纹/电缆外径（mm）Intlet's direction/ Cable'soutside diameter38010, 1520, 3060, 1002004003Exde ⅡBT4Exde ⅡCT4Exd ⅡBT4IP54WF1, WF2G3/4/Φ10~Φ15G1/Φ12~Φ18G11/4Φ15~Φ22G2/Φ27~Φ33G3/Φ43~Φ51