Product Name: BZZ51 proof switch (Ⅱ B, Ⅱ C) 

 Scope 
 1 and Zone 2 dangerous places. 
 Ⅱ A, Ⅱ B, IIC explosive atmosphere. 
 Note: The requirements specified class IIC. 

 Type Meaning 

 Features 
 ■ aluminum alloy shell with plastic sprayed surface. 
 ■ built-in switch for the electrical current of 60A the following line 
 ■ Along the way, as power switches, and controls the motor starters, variable speed, stop, change to the other. 
 ■ pipe or cable wiring. 
 ■ comply with GB3836-2000, IEC60079 standard request. 

 Main technical parameters 
 Model Rated Voltage (V) Rated current (A) proof mark cable diameter (￠, mm) 

 BZZ51-10 / □ 10 
 -------------------------------------------------- ------------------------------ 
 BZZ51-25 / □ 220/380 25 Exde II Bt6 10-14 
 -------------------------------------------------- ------------------------------ 
 BZZ51-60 / □ 60 60 Exde II Ct6 18-22 
 Shape example 

 Type ABCD Notes 
 BZZ51-10 / □ 132 215 115 98 
 BZZ51-25 / □ 185 240 160 130 IIB 
 BZZ51-60 / □ 224 372 165 
 Type ABCDEF Remarks 
 BZZ51-10 / □ 153 132 110 - 230 114 
 BZZ51-25 / □ 214 190 164 113 360 186 IIC 
 BZZ51-60 / □ 330 308 210 190 450 176