Fire Alarm System

GL-957E short circuit isolator is used for the short circuit fault protection of buses, it is just used in 9000 series fire alarm control system. When a bus circuit is operating normally, the GL-957E short circuit isolator will not act; when a short circuit fault occurs at a place at the output end of the short circuit isolator in the bus circuit (short circuit current  >400mA), the short circuit isolator will act to cut off all equipment connected to the output end of it, thus ensuring the buses operate normally. Upon elimination of the short circuit fault, the short circuit isolator can automatically bring the equipment that is cut off into the system again. A short circuit isolator will make it convenient to confirm the location suffering a short circuit fault. The short circuit isolator does not need coding nor occupies the address in the bus circuit.