Przekaźnik prądu upływu typu B - X72DB3
Przekaźnik prądu upływu typu B - X72DB3
Przekaźnik prądu upływu typu B - X72DB3
Przekaźnik prądu upływu typu B - X72DB3
Przekaźnik prądu upływu typu B - X72DB3

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Произвођач: FRER

Реле за струјно цурење тип B – X72DB3

Type B Earth Leakage Relay X72DB3 distinguished by 72 x 72 mm size

The type B earth leakage relays of the X...DB3 series are designed for intuitive and automatic detection of continuous, alternating and high-frequency leakage currents. The special feature of these relays is the continuous and immediate monitoring of the insulation status via the multi-coloured display.



Main functions

  • Continuous digital indication of the leakage current: total RMS, AC fundamental, AC high frequency
  • Storing of the intervention current values
  • Internal clock and storage of the last 10 events
  • RS485 Modbus RTU for measurements, event archive, scope
  • Selectable antifibrillation filter with fire protection 300mA
  • Selectable 3rd harmonic filter
  • Double threshold: total RMS and DC component
  • AC measurements up to 10kHz



Technical data

Parameter Value
Display Multicolor backlight LCD
Display maximum indication 3 digits
Dot point position Automatic
Bargraph 10 levels
Residual current measurement IΔ Type B - TRMS
Display refresh 500ms (average value)
Measurement bandwidth DC; 2,5Hz – 10kHz
Base precision ±0,5%
Antifibrillation LPF IEC 62423, VDE 0664-T-100, fire protection 300mA
3rd harmonic LPF Attenuation 80% @ 150Hz
IΔN current range 0,030 ÷ 15 A;
Trip contact SPDT (COM, NO, NC)
Nominal load 6A, 250VAC AC1; 6A, 24VDC DC1 3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
SAfety Standard (ND) or positive (NE)
Insulation and safety According to IEC 61010-1, IEC 60947-1
Operating temperature 0…+50˚C
Storage temperature -30˚C…+70˚C
Thermoplastic material UL 94-V0



Additional technical data

Parameter Value
Automatic sensor connection test Voltage pulse
Alarm (optional) SPDT (COM, NO, NC) – Standard X72DB3
SPST (COM, NO) – Optional X35DB3/X48DB3
Alarm setting OFF, 5-100% IΔN
Activation delay 20ms-30s
Release delay LATCH - 20ms – 30s
Special functions Reclose; 2nd Trip i IΔnDC
Relay nominal load 6A, 250VAC AC1; 6A, 24VDC DC1 3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
PhotoMOS nominal load 100mA, 250VAC/DC (CAT II) – 150VAC/DC (CAT III) 350VPK-PK (including overvoltage)
Safety Standard (ND) or positive (NE)
Test-Reset Input (optional) Command > 2s
Modbus RTU (optional) RS485 insulated, A+, B-, GND (optional)
Transfer rate 9600, 19200, 38400, 57600 bit/s
Programmable parameters Parity and Stop bits
Programmable address 1 – 247
Scope function 120 samples (12bit), with amplitude and time scales
Real Time Clock (optional) RTC with Battery backup
Archive event store Last 10 events, with Timestamp



Ordering codes X_ _DB3:

Type ordering X _ _ D B 3 _ _ _ _ _ _ _ _
Dimensions 2 mod. DIN X 3 5 D B 3
48x48mm X 4 8 D B 3
72x72mm X 7 2 D B 3
Nominal frequency DC [&] 50-60 Hz 4 D C
DC [&] 400 Hz Q D C
DC [&]50–60 Hz IΔn 1÷50 A * 0 5 0
Options Test Reset input R 1 0
RS485 Modbus RTU M 1 0
PhotoMOS Alarm X 1 L
Relay Alarm X 1 1
TCS Alarm T C S
Supply voltage 230VAC±10%; 3VA 2
20 – 60V AC/DC <4VA/2,5W L
80 – 260V AC/DC <6,5VA/2,5W H
Real Time Clock no
yes C

* - only with TDB321–TDB471

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Type B Earth Leakage Relay X72DB3 distinguished by 72 x 72 mm size

The type B earth leakage relays of the X...DB3 series are designed for intuitive and automatic detection of continuous, alternating and high-frequency leakage currents. The special feature of these relays is the continuous and immediate monitoring of the insulation status via the multi-coloured display.



Main functions

  • Continuous digital indication of the leakage current: total RMS, AC fundamental, AC high frequency
  • Storing of the intervention current values
  • Internal clock and storage of the last 10 events
  • RS485 Modbus RTU for measurements, event archive, scope
  • Selectable antifibrillation filter with fire protection 300mA
  • Selectable 3rd harmonic filter
  • Double threshold: total RMS and DC component
  • AC measurements up to 10kHz



Technical data

Parameter Value
Display Multicolor backlight LCD
Display maximum indication 3 digits
Dot point position Automatic
Bargraph 10 levels
Residual current measurement IΔ Type B - TRMS
Display refresh 500ms (average value)
Measurement bandwidth DC; 2,5Hz – 10kHz
Base precision ±0,5%
Antifibrillation LPF IEC 62423, VDE 0664-T-100, fire protection 300mA
3rd harmonic LPF Attenuation 80% @ 150Hz
IΔN current range 0,030 ÷ 15 A;
Trip contact SPDT (COM, NO, NC)
Nominal load 6A, 250VAC AC1; 6A, 24VDC DC1 3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
SAfety Standard (ND) or positive (NE)
Insulation and safety According to IEC 61010-1, IEC 60947-1
Operating temperature 0…+50˚C
Storage temperature -30˚C…+70˚C
Thermoplastic material UL 94-V0



Additional technical data

Parameter Value
Automatic sensor connection test Voltage pulse
Alarm (optional) SPDT (COM, NO, NC) – Standard X72DB3
SPST (COM, NO) – Optional X35DB3/X48DB3
Alarm setting OFF, 5-100% IΔN
Activation delay 20ms-30s
Release delay LATCH - 20ms – 30s
Special functions Reclose; 2nd Trip i IΔnDC
Relay nominal load 6A, 250VAC AC1; 6A, 24VDC DC1 3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
PhotoMOS nominal load 100mA, 250VAC/DC (CAT II) – 150VAC/DC (CAT III) 350VPK-PK (including overvoltage)
Safety Standard (ND) or positive (NE)
Test-Reset Input (optional) Command > 2s
Modbus RTU (optional) RS485 insulated, A+, B-, GND (optional)
Transfer rate 9600, 19200, 38400, 57600 bit/s
Programmable parameters Parity and Stop bits
Programmable address 1 – 247
Scope function 120 samples (12bit), with amplitude and time scales
Real Time Clock (optional) RTC with Battery backup
Archive event store Last 10 events, with Timestamp



Ordering codes X_ _DB3:

Type ordering X _ _ D B 3 _ _ _ _ _ _ _ _
Dimensions 2 mod. DIN X 3 5 D B 3
48x48mm X 4 8 D B 3
72x72mm X 7 2 D B 3
Nominal frequency DC [&] 50-60 Hz 4 D C
DC [&] 400 Hz Q D C
DC [&]50–60 Hz IΔn 1÷50 A * 0 5 0
Options Test Reset input R 1 0
RS485 Modbus RTU M 1 0
PhotoMOS Alarm X 1 L
Relay Alarm X 1 1
TCS Alarm T C S
Supply voltage 230VAC±10%; 3VA 2
20 – 60V AC/DC <4VA/2,5W L
80 – 260V AC/DC <6,5VA/2,5W H
Real Time Clock no
yes C

* - only with TDB321–TDB471

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