Littelfuse AF0500 SERIES Arc-Flash Relay

The AF0500 is a microprocessor-based arc-flash relay that limits arc-fault damage by detecting the light from an arc flash and rapidly tripping the feeder breaker. The unit is well suited for switchgear, transformer and power converter applications.

Sensors, inputs, and connections are health monitored to ensure fail-safe operation. A secondary solid-state trip circuit provides a redundant trip path. A USB port is used for configuration and access to event logs.

AF0500 includes an Ethernet interface and supports Modbus® TCP communication. Zone tripping, upstream breaker tripping and tie breaker tripping applications can be easily configured.

A number of control inputs allows interconnection of multiple AF0500 units to form a system.

Features & Benefits:

 

  • 4 arc sensor inputs: Supports both point and fiber sensors
  • Arc-Flash trip time 1<ms: Limits arc-flash damage and risk of injury
  • 2 IGBT high speed trip outputs: Supports applications such as upstream breaker tripping or tie breaker tripping
  • Universal Power Supply: 100-240 Vac, 24-48 Vdc, or 110-250 Vdc supply
  • Fail-safe system: Continuous monitoring of optical sensors and inputs ensures protection
  • LED indication (on unit and each sensor):Trip and sensor status indicated both on relay and sensors
  • Discrete wire networking: Multiple AF0500 units can be interconnected to form a system
  • USB interface:Data logging and configuration software uses a USB interface with no drivers or software installation
  • Data logging: On-board event recorder for system diagnostics (2048 log lines)
  • Ethernet interface: Modbus® TCP communication

Documents and Downloads

Document File Type File Size Download
AF0500 SERIES Datesheet PDF 743 KB