BLK52 explosion-proof circuit breaker (Ⅱ B, Ⅱ C) 
 Bo-hui supply BLK52 explosion proof circuit breaker, BDZ52 proof circuit breakers, explosion-proof magnetic starter, 
 Explosion-proof power distribution box, explosion-proof power distribution box, explosion-proof control box, explosion-proof power overhaul box, explosion-proof box maintenance 
 , Explosion-proof junction box, explosion-proof fans, explosion-proof lights, explosion proof pipe fittings and other products ..... 

 Scope 
 1 and Zone 2 dangerous places. 
 Ⅱ A, Ⅱ B explosive atmosphere. 

 Type Meaning 

 Main technical parameters 
 Type Rated voltage (V) release rated current (A) proof mark cable diameter () Inlet thread () protection 

 BLK52-32 1,2,3,4,6,10,16 12-17 1 
 20,25,32 
 BLK52-63 40,50,63 Exde II Bt6 13-26 1 '/ 2,2 Ip54 
 BLK52-100 / □ 80,100 18-33 1'2, 2 * Ip55 
 BLK52-225 / □ 380/220 125,160 
 180,200,225 27-42 2,2 '/ 2 
 BLK52-400 / □ 250,315 34-50 3 
 350,400 
 BLK52-630 / □ 500,630 43-60 3,3 '/ 2,4 


 Features 
 ■ aluminum alloy shell with plastic sprayed surface 
 ■ Built MCB or low voltage MCCB. 
 ■ With overload and short circuit protection can also be installed upon request 
 ■ leakage protection devices such as shunt trip. Etc.protection device. 
 ■ pipe or cable wiring. 
 ■ comply with GB3836-2000.IEC60079 standards. 


 Shape example 

 BLK52-32 (IIB) BLK52-225 XD (IIB) 
 BLK52-60 (IIB) BLK52-225XX (IIB) BLK52-100 (IIB0 
 Shape example 
 BLK52-400XD (IIB) BLK52-400XX (IIB) 
 BLK52-630XX (IIB) BLK52-630XD (IIB)