Arc Flash Detection Relays
Littelfuse AF0500 Series
- Microprocessor-based arc flash relay
- Suited for switchgear, transformer and power converter applications
- Connect multiple units to form a system
Description
The Littelfuse AF0500 is a microprocessor-based arc flash detection relay limiting arc fault damage. The AF0500 detects the light from an arc flash and rapidly trips the feeder breaker. Effective for switchgear, transformer, motor controls and power converter applications.
Easily configure zone tripping, upstream breaker tripping and tie breaker tripping applications.
Health monitoring of sensors, inputs and connections ensures fail-safe operation with front-panel and sensor LEDs for fast fault location. A secondary solid-state trip circuit provides a redundant trip path.
Access event logs and configure the unit with the USB port. A number of control inputs allows interconnection of multiple AF0500 units to form a system.
We are the exclusive NSW supplier of Littelfuse protection relays and controls for the protection, safe control and distribution of electrical power in industrial applications.
4 arc sensor inputs
Supports both point and fibre sensors.
Arc-Flash trip time under 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.
Fail-safe system
Short circuit protection is ensured with continuous monitoring of optical sensors and input
Discrete wire networking
Interconnect multiple AF0500 units and form a system.
USB interface
Data logging and configuration software uses a USB interface – no need for drivers or installation.
Data logging
On-board event recorder for system diagnostics (2048 log lines).
Ethernet interface
Modbus TCP communication.
AF0500 Data Sheet
AF0500 Data Sheet AF0500 Manual AF0500 Application Guide AF0500 BrochureAF0500 Workbook
Universal power supply
100 to 240 Vac (+10%, -15%) 50/60 Hz, 20 VA, 110 to 250 Vdc (+10%, -20%) 8 W
Low Voltage
24 to 48 Vdc (+10%, -20%), 4 W
Sensor Inputs
4 light sensor inputs for PGA-LS10, PGA-LS20 and PGA-LS30 sensors
Trip Outputs
2 IGBT switches
UL Rating
120/240 Vac, 1800 VA, 0.75 A maximum continuous, 125/250 Vdc, 138 VA, 0.75 A maximum continuous
Supplemental Rating
Make/Carry
30 A for 0.2s
Voltage Rating
24 to 300 Vac, 24 to 300 Vdc
Current Rating
20 A for 2 s, 10 A for 5 s
Communication
Ethernet, 2 ports with internal Ethernet switch, Modbus TCP
Operating Temperature
–40°C to +70°C
Dimensions
H 130 mm; W 200 mm; D 54 mm
Shipping Weight
0.9 kg
Approvals
UL Listed (UL508), CE, RCM, FCC, CSA
Mounting
5 years
Warranty
Surface, DIN (with optional D0050 adapter clips)
