High energy surge protection, remote signal alarm interface, failure detection indication, standard modular installation, built-in instantaneous overcurrent circuit breaker, pluggable and replaceable module, maximum discharge current per module 20~80kA (8/20 μ s) Reaction speed: 10 ° second level. The BRM7 series secondary power surge protector is designed according to IEC and GB standards. Has strong surge discharge capability, with a maximum discharge current of 20-80kA per person (8/20 μs) , suitable for low-voltage distribution The various levels of protection in the electrical system can choose multiple combination methods based on different distribution systems (TT/TN/IT).