3 4 48 Channels Arc Flash Relay for Arc Flash Detection & Protection

• Customization: Available
• Theory: Electromagnetic Relay
• Usage: Protection Relay
• Model NO.: AFR Series
• 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
• Package Size: 10.00cm * 10.00cm * 10.00cm
• Package Gross Weight: 0.650kg

Product Description

Arc Protection Relay Overview

Arc protection relays are 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 Flash 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.

Specification

Applications

Renewable Energy Box Transformer

Ring Main Unit, RMU

Retrofit substation

Key Features

* Complete digital design, simple principle;
* Strong electrical performance;
* Comprehensive record of fault information;
* Double criterion of over-current and arc, high reliability;
* Optical fiber transmits, strong electromagnetic interference resistance.
* Programmable logic of trip exit

Arc Flash Detection
The AFR-3S is our new advanced arc flash relay, which adopts a dual criteria (current and arc sensing) for arc flash detection. Only the arc flash happen and the current overload the presetting values, it will alarm for arc flash. It offers not only arc flash protection, but also circuit breaker failure protection.

Technical Specifications

Working power supply
Power supply	AC/DC 85~265V, DC24/48V customized
Power consumption	Normal operation ≤8W; device action ≤10W
Current
Rated current input	5A, Frequency: 50HZ/60HZ; Accuracy: 0.5
Rated current output	2.5mA, CT ratio:2000:1
Measuring range	Protection current: 0.06In-6In
Linear range	0~40A (Impedance: 20Ω)
Power consumption	≤0.5VA
Electrical parameter error
Protection current accuracy	≤±4%
Zero sequence current accuracy	≤±4%
Arc signal input
Number of channels	1-3 channels
Sensor type	ST optical fiber type
Detection light type	Visible light/ UV light optional
Optical fiber length	5m/10m/15m
Temperature measurement signal input (optional)
Number of channels	3-12 Channels
Sensor type	Passive/Active/Micro
Signal acquisition type	433M
Partial discharge signal input (optional)
Channels number	1 channel
Sensor type	Wire transmission
Detection light type	Geoelectric wave/Ultrasonic wave/Noise/UHF (optional)
Smoke sensor input (optional)
Channels number	1 way
Sensor type	External wired smoke sensor
Fire extinguishing sensor (optional)
Injection time	≤12S
Start mode	Electric start & thermal start
Protect space	≤3m³
Component type	Aerosol fire extinguishing unit
Action time
Pure arc trip	≤10ms
Current+arc trip	≤20ms
Alarm action time	≤40ms
Relay input
Quantity	5DI, NO; Dry contact
Max. switching voltage	35V
Max. switching current	50mA
Action time	Max. 18μs
Relay output
Channels number	4 Channels (optional 6 channels)
Load capacity	Load capacity: 10A@250Vac/ 12A@24Vdc. Max. switching current: 10 A (ac)/ 12A(dc). Max. switching voltage: 277Vac/ 300Vdc
Max. switching current
Max. switching voltage
Communication Interface
Communication Interface	1 Channel RS485, photoelectric isolation, with lightning protection
Baud rate	4800, 9600bps (default 9600)

Drawings & Dimensions

After Sales Service

Standard Warranty: 12 months or 2,000 operating hours (whichever comes first).
Extended Warranty: Optional coverage up to 36 months.
Global Support: 24/7 technical assistance and spare parts supply.
Training: remote operation/maintenance training.

Company Profile

Chongqing Blue Jay Technology Co., Ltd.

Chongqing Blue Jay Technology Co., Ltd. is a leading Chinese manufacturer of arc flash relays with over 10 years of expertise. Certified with ISO 9001, CE, and IEC, we export to 50+ countries, offering reliable machinery backed by R&D innovation and strict quality control.

Why Choose Us?

Other Products

OEM/ODM capabilities
Competitive pricing & Low MOQ
Fast shipping & customs support
Turnkey project solutions

4 channel arc flash relay
12 channel arc flash relay
36 channel arc flash relay
48 channel arc flash relay

FAQ

Q: What’s the lead time for orders?
A: Standard models ship in 7-15days; customized units require 30–45 days.

Q: Do you provide after-sales service overseas?
A: Yes, we have partnered service centers in key regions.

Q: Can I request a customized bucket size?
A: Absolutely! We offer tailored attachments.

Q: How do I place an order?
A: Contact us via email/phone for a quote, then confirm with a PO.