AF0100 Littelfuse Arc Flash Relay

The AF0100 Littelfuse arc flash relay is mainly used to detect arc faults in electrical systems and protect equipment and personnel in electrical systems from arc faults. Arc protection relays can detect arcs by monitoring parameters such as current, voltage, and electric power, and quickly disconnect the power supply before an electrical fire occurs, thereby reducing the risk of fire.

 

Arc protection relays are usually used in medium and high-voltage power distribution systems, control cabinets, transformers, generators, motors and other electrical equipment. They adopt the dual-criteria principle of arc light detection and overcurrent detection and have the characteristics of fast protection action and high reliability.

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Features of AF0100 Littelfuse Arc Flash Relay

  • Compact size: Fits into a broad range of arc-flash applications
  • Works with two different optical sensor types: Point sensors, fiber-optic sensors, or any combination of them
  • Dual sensor inputs: One relay can monitor two arc-flash sensors
  • Adjustable light sensitivity: Allows for operation in bright environments and maximum sensitivity in dark environments
  • Discrete wire networking: Multiple AF0100 or AF0500 units can be interconnected to form a system
  • Fail-safe system: Continuous monitoring of optical sensors and inputs ensure maximum protection
  • USB interface: Configuration software is easy to use with no drivers or software installation
  • Unit health indication: Continuous protection with self-diagnostic and remote unit health indication
  • LED indication: Trip and sensor status indication on the relay and sensors

 

Applications of AF0100 Littelfuse Arc Flash Relay

  • Switchgear cubicle
  • Transformer compartment
  • Generator control panel
  • Motor control center bucket

 

Specification of AF0100 Littelfuse Arc Flash Relay

Power Supply Universal 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

Voltage Rating 24 to 300 Vac, 24 to 300 Vdc
Current Rating 20 A for 2 s, 10 A for 5 s
Make/Carry 30 A for 0.2s
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

Communication Ethernet, 2 ports with internal Ethernet switch,

Modbus® TCP

Mounting      Surface DIN (with optional D0050 adapter clips)
Approvals UL Listed (UL508), CE, RCM, FCC, CSA
Operating Temp. –40°C to +70°C
Dimensions H 130 mm (5.1”); W 200 mm (7.9”); D 54 mm (2.1”)
Shipping Weight 0.9 kg (2 lb)

 

AF0100 Littelfuse Arc Flash Relay Wiring diagram

wiring of AF0100 littlefuse arc flash relay