Afr-4 Cost-Effective 4 Channels Switchgear Arc Flash Relay for Reducing Arc-Fault Damage

• Customization: Available
• Theory: Electromagnetic Relay
• Usage: Protection Relay
• Model NO.: AFR-4
• Phase: 3
• Electricity Type: Ac
• Number of Pole: 2
• Load: Medium Power Relay
• Protective Characteristics: Enclosed Relay
• Action Principle: Electromagnetic Type
• Size: Miniature
• Type: Electric Parameter Relay
• Power Supply: 85~265VAC/DC, Optional 48VDC
• Consumption: Monitoring Stanby <5W Do Trig <10W
• Protection Range: 0~20 in
• Do Relay Channels: 6
• Trip Coil Contact: AC250V/8A Fast Relay, The Passive Node
• Trip Operation Time: <20ms @ Overcurrent + Arc Protection
• Comm Port: RS485 Modbus-RTU
• Transport Package: Express Box
• Specification: 10*10cm
• Trademark: blue jay
• Origin: Chongqing, China
• Production Capacity: 1000 Piece/Pieces Per Day

Product Description

 

 

Product Description

AFR-4 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.

Feature

1. ≤5ms fast relay tripping;
2. Regional arc light detection
3. Multiple combined tripping modes;
4. Circuit breaker failure protection;
5. 4 channels of arc light signals detection;
6. Dual criteria for arc detection and overcurrent detection;
7. Integrated /RS485 MODBUS communication protocol;
8. Support ST visible light and ST ultraviolet sensor access.

Specification

Working power supply
Power supply	AC/DC 85~265V
Power consumption	≤8W
Current input
Rated current value	5A/1A
Measuring range	Protection current: 0.6~6In
Error	≤4%
Arc signal input
Number of channels	4 channels
Sensor type	ST optical fiber type
Detection light type	Visible/ UV optional
Spectrum	280-550nm
Optical threshold	8000 lux (±20%)
Optical fiber	5m/10m/15m
Action time
Fast relay output	≤5ms
Pure arc trip	≤8ms
Current+ arc trip	≤15ms
Relay output
Quantity	6 trip output
Operating Voltage	5A@250V
Input	Passive contact, photoelectric isolation, isolation voltage 2500V
Mechanical life	≥10000 times
Communication Interface
Communication Interface	1 Channel, photoelectric isolation, with lightning protection
Baud rate	4800, 9600bps (default 9600),19200
Communication protocol	Modbus RTU
Environment
Working temperature	-10 ~ +55°C
Storage temperature	-25 ~ +70°C
Humidity	5~95%RH
Atmospheric pressure	60kPa~106kPa

 

 

Dimension