BLK52 series of explosion-proof circuit breaker. 
 Scope: 1 and Zone 2 dangerous places. 
 Ⅱ A, Ⅱ B explosive atmosphere. 
 Features: aluminum alloy shell with plastic sprayed surface built MCB or low voltage MCCB. With overload and short circuit protection, leakage can also be installed under the requirements of protection devices such as shunt trip. Pipe or cable wiring. compliance 60079 standards.