The Tier AF Series Arc Flash Relay System reduces arc flash incident energy and boundaries in both Medium-Voltage and Low-Voltage electrical systems.
The Tier AF series is an externally installed control cabinet that uses both fiber optic sensors and current transformers (CTs) to immediately detect both light and current associated with an arc flash event and quickly activate a system disconnect.
Connects external to equipment
Fast & easy installation
Ensures electrical equipment’s warranties, agency listings & selective coordination maintained
Detects light & current within the equipment
Fast reaction
Relay is < 1 ms
Shunt trip mechanism< 50 ms
Powered from external location
120 – 480 V, 1P, 5A
200 kA SCCR (UL 508A method)
Monitoring
Continuous self-monitor
External LEDs
Remote communications via RS485 or Ethernet TCP
