ELR-3BN Type-B earth leakage relay. Sensitivity range from 0,03 to 10A. RS485 Modbus. Events log.

The eart leakaga relay ELR-3BN provides ground fault protection for all types of AC/DC systems, including power distribution, sub-distribution and industrial control systems. The use of charges with power electronics has become extended in recent years. Type B protection ensures the safety of people from alternating (AC), direct (DC) or mixed (AC/DC) current.

Introduction
Range	ELR
Product name	ELR-3BN
Product type	Residual current monitoring and protection relay Type B
Compatibilità gamma	CTB-2 Type B earth leakage transformer

Technical characteristics
Device application	Variable speed drives AC/DC converters Frequency converters Photovoltaic installations Electromedical devices Electric vehicle charging Active Filters Data center UPS
Supply voltage	85-250 VAC | 120-250 VDC 24-48 VAC/DC (optional) 110 VDC (optional)
Power consumption	4 VA
Display indications	Backlight LCD (red TRIP) Backlight LCD (yellow ALARM)
Type of measurement	TRMS
Residual earth-leakage adjustment	0,03-10 A
Residual earth-leakage time delay adjustment	0,02-10 s
Protection	Type AC protection Type A protection Type B protection
Test function	Local Remote
Output relays	2 (TRIP, Alarm) 5 A (250 VAC) Configurable normally de-energised or energised
Signalling	Green LED (power ON) Red LED (TRIP) Red LED (Missing CT connection) Yellow LED (Alarm)
Mounting mode	DIN rail 3 modules
Standards	2014/35/UE 2014/30/UE 2015/863/UE EN 61326-1:2013-01 EN 61326-2-1:2013-01 EN 61326-2-2:2013-01 EN 61326-2-3:2013-01 EN 61326-2-4:2013-01 EN 61326-2-5:2013-01 EN 60947-2:2017-10 (Annex M) EN 61543/A2:2006-02 CEI EN 61543/A11 CEI EN 61543/A12
Weight	200g
Communication port	RS485 (optional)
Communication protocol	Modbus a 4,8...115,2 kbauds

Environment
IP degree of protection	IP40 front IP20 terminals
Relative humidity	5...90%
Operating temperature	-10...+60 °C
Storage temperature	-20...+80 °C

Options
Accessory	Flush mount 72x72 mm adapter