ARB4 Lichtbogenschutzrelais

ARB4 arc protection relay

The ARB4 series arc flash protection device integrates multiple functions such as protection, measurement, monitoring, control, communication, fault recording, and event recording. It can monitor arc flash signals and provide real-time protection for current or voltage signals, and achieve arc flash protection for medium and low voltage distribution systems from 0.4 kV to 35 kV. The ARB4 series arc flash protection device is easy to operate, resource-saving, stable, reliable, and easy to maintain. It is widely used in industries such as power and water, transportation, industry, mineral extraction, renewable energy, shipping, and construction.

High-performance hardware platform

Mature and perfect protective function

Rich interface resources: 4 AC current channels and 3 AC voltage channels; 8 active switching input channels; 5 independent passive switching output channels; 1 RS485 serial communication interface supporting IEC60870-5-103 and Modbus protocols;

LCD display, human-machine interface

Real-time current and voltage values, arc, input and output

Record action behavior and error waveform information

Self-test functions, good interference suppression performance

Application: Electricity, water conservation, transportation, industry, minerals, new energy, ships and construction buildings

Technical data

Model/Function			ARB4-A1	ARB4-A2	ARB4-A3
Hardware	Signal detection of the arc sensor		1	2	3
	Current collection		4 power channels
	Voltage detection		3 zero voltages, a total of 3 voltage channels
	Digital Input		8
	Digital output		5 normally open exits
	1 RS485 interface / IRIG-B		√
function	Arc protection	Arc criterion	√
		Arc and current criterion	√
		Arc and voltage criterion	√
	Arc monitoring and fault location		√
	Real-time self-inspection of arc sensors and fiber optic connections		√
	Device self-test and abnormal alarm		√
	CT interruption monitoring		√
	Non-electrical protection		√
	Device alarm		√
	Maintenance status lock		√
	Fault recording		√
protocol	Modbus		√
	IEC101		√
	IEC103		√
	IRIG-B		√
	LoopBack		√

Note: √ indicates that this function is available.

Power supply	AC/DC 220V, AC/DC 110V, DC 48V, DC 24V
Area	Power supply × (1 ± 20 %)
Maximum power consumption	≤ 15 VA
nominal voltage	AC 100V or 100/√3 V
Area	0.1–120 V
accuracy	±1 %
Power consumption	≤ 0.5 VA (single-phase)
overload capacity	1.4 times the rated voltage in continuous operation; 2 times for 10 seconds.
Rated current	AC 5 A/1 A
Area	0.04 inches to 20 inches
Power consumption	≤ 0.5 VA (single-phase)
Overload capacity	2 times the rated current in continuous operation; 40 times overload in 1 second.
Nominal frequency	50 Hz or 60 Hz
Area	40–70 Hz
accuracy	±0.1 Hz
Mechanical life	≥10,000
Switching capacity	≥1,000 W (L/R = 40 ms)
Inrush current	Continuous current ≥5 A, short-term (200 ms) ≥30 A
Breaking capacity	≥30 W (L/R = 40 ms)
Pulse voltage	±5 kV (1.2/50 μs, 0.5 J)

Technical parameters of the ARB-S arc sensor:

The ARB-S arc sensor has a monitoring angle of over 180° and an operating temperature range of -40°C to 85°C.

	ARB-S0	Passive wide-angle ultraviolet arc sensor (no power supply, maintenance-free); fully insulated, metal-free (no electrical safety hazards).
	ARB-S1	Passive wide-angle ultraviolet arc sensor (no power supply, maintenance-free); ST standard interface.

ARB4 arc protection relay

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Product info

Selection table for arc protection devices

Selection table for arc sensors

Technical data

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