Applying Scope
The safety barrier shall be installed outside the explosion-proof area to ensure the safety of the explosion-proof area by limiting the working current of the equipment connecting to the safety barrier.
Matching characteristics
 
Connection
JBF4101-Ex explosion-proof smoke detector, JBF4111-Ex explosion-proof heat detector, JBF4121A-Ex manual call point and JBF4123A-Ex fire hydrant button must be used with the safety barrier.
The safety barrier requires good grounding, grounding resistance < 4Ω. The number of explosion-proof equipment connecting to each safety barrier should not be more than 10, and the number of safety barriers used in each alarm loop shall not exceed 6.