Arc flash protection relay AFR-4

4 NO/NCAC/DCfor feeder

AFR-4 arc flash detection relay is a versatile and independently operating device for bay based protection. It supports 4-channels arc signal detection and can configuration multiple arc tripping modes, ensuring accurate and fast fault isolation. With a fast relay output speed up to 5ms, AFR-4 can minimize or completely eliminate arc flash damage, improving system safety and reliability. It can be used in various arc protection applications in low or medium voltage power distribution system. AFR-4 also provides flash warning and dual criteria tripping mechanism (arc detection + current), providing a comprehensive solution for arc flash protection. Integrated RS485/Modbus communication enables seamless remote monitoring and control, which is ideal for modern power systems. • ≤5ms fast relay tripping; • Regional arc light detection • Multiple combined tripping modes; • Circuit breaker failure protection; • 4 channels of arc light signals detection; • Dual criteria for arc detection and overcurrent detection; • Integrated /RS485 MODBUS communication protocol; • Support ST visible light and ST ultraviolet sensor access.