Six-channel earth leakage relay - X52UB6
  • Six-channel earth leakage relay - X52UB6
  • Six-channel earth leakage relay - X52UB6
  • Six-channel earth leakage relay - X52UB6
  • Six-channel earth leakage relay - X52UB6

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Произвођач: FRER

Six-channel earth leakage relay - X52UB6

Six-channel earth leakage relay - X52UB6

The Multichannel earth leakage relays COMBI 6 have been designed for the monitoring and protection of up to 6 independent systems. A single instrument of 3 DIN modules size allows a considerable optimization of the overall dimensions and of the wiring connection procedures, thanks also to the presence of withdrawable terminals blocks for the connections. The 4 front keys allow immediate programming, further simplified by the copy/paste function available in the setting menu. A push button dedicated to the Scroll of the channels allows the selection of the input to be displayed, while in case of trip intervention, the display will automatically show the last tripped channel, and the relative LED will be ON.

Technical data

Main features

  • Memory storage of current alarm values
  • Internal clock and memory storage of the last 10 events
  • RS485 Modbus RTU output for transmitting measurement data, event information, and operating as an oscilloscope function.
  • Adjustable voltage flicker filter with fire protection
  • Adjustable third harmonic filter
  • Dual threshold: total RMS and DC component

Technical data



Display Color, backlit LCD
Resolution 3 digits
Decimal point position Automatic
Bargraph 10 levels
Measurement type Type AC, A, F, B - TRMS
Display refresh rate Every 500ms (average value for the period)
Bandwidth DC; 2.5Hz – 3kHz
Accuracy ±0.5%
Voltage flicker filter Compliant with IEC 62423, VDE 0664-T-100
Fire protection 300mA
Third harmonic filter Attenuation of 80% at 150Hz
Setting range for current IΔN 0.03 ÷ 30 A; TDA… - TDC…
30 ÷ 500mA; 500mA ÷ 1.5A (TC) TDB…3CM
300mA ÷ 5A; 5A ÷ 15AQ (TC) TDB…003
Setting range for operating current IΔNO 80% - 98% IΔN
Contact configuration 6x SPST (COM, NO1, NO2, NO3, NO4, NO5, NO6)
Setting range for DC operating current IΔN 5% - 100% IΔN DC(min. 6mAdc)
Time-current characteristic settings (current-dependent times) Instantaneous: IΔN = 30mA
Selective 60ms: IΔN > 30mA
Delayed 20ms – 30s: IΔN > 30mA
Time-current characteristic settings (current-independent times) Delayed 20ms: IΔN = 30mA
Delayed 20ms – 30s: IΔN > 30mA
Contact SPDT (COM, NO, NC)
Rated load 6A, 250VAC AC1; 6A, 24VDC DC1
3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
Protection Standard (ND) or increased (NE)
Isolation levels In accordance with IEC 61010-1, IEC 60947-1
Operating temperature 0…+50˚C
Storage temperature -30˚C…+70˚C
Self-extinguishing housing (material) UL 94-V0
Protection level for built-in applications IP52
Protection level for terminal applications IP20
Compliant with EN 60947-2

Additional technical data



Automatic connection test Secondary voltage impulse
Alarm (optional) SPDT (COM, NO, NC)
Alarm settings Disabled, 5-100% IΔN
Special function Reclose; 2nd Trip and IΔnDC
Relay rated load 6A, 250VAC AC1; 6A, 24VDC DC1
3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
PhotoMOS Transistor Connector rated load 100mA, 250VAC/DC (CAT II) – 150VAC/DC (CAT III) 350VPK-PK (with overload)
Protection Standard (ND) or increased (NE)
Test-Reset Input (optional) Signal > 2s
Modbus RTU (optional) Isolated RS485, A+, B-, GND (option)
Data transfer rate 9600, 19200, 38400, 57600 bit/s
Programmable parameters Parity bit and STOP
Programmable addresses 1 – 247
Oscilloscope function 120 samples (12-bit), with time and amplitude base settings
Real-time clock (optional) RTC with backup battery power
Event logging Last 10 events with time stamps


Type designation X _ _ D B 3 _ _ _ X52U_____ _ _ _ _ _
Input Type Type B 6 inputs Type B X52UB64DC
Type A-F 6 inputs Type A-F X52UL6030
Mixed 1 input Type B 5 inputs Type A-F X52UX6C15
2 inputs Type B 4 inputs Type A-F X52UX6C24
3 inputs Type B 3 inputs Type A-F X52UX6C33
4 inputs Type B 2 inputs Type A-F X52UX6C42
5 inputs Type B 1 input Type A-F X52UX6C51
Options No options X60
Alarm + input reset R61
Modbus RTU M60
Power supply 20 – 60VAC/DC <4VA/2.5W L
80 – 260V AC/DC <6.5VA/2.5W H
Real-time clock No -
Yes C
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Six-channel earth leakage relay - X52UB6

The Multichannel earth leakage relays COMBI 6 have been designed for the monitoring and protection of up to 6 independent systems. A single instrument of 3 DIN modules size allows a considerable optimization of the overall dimensions and of the wiring connection procedures, thanks also to the presence of withdrawable terminals blocks for the connections. The 4 front keys allow immediate programming, further simplified by the copy/paste function available in the setting menu. A push button dedicated to the Scroll of the channels allows the selection of the input to be displayed, while in case of trip intervention, the display will automatically show the last tripped channel, and the relative LED will be ON.

Technical data

Main features

  • Memory storage of current alarm values
  • Internal clock and memory storage of the last 10 events
  • RS485 Modbus RTU output for transmitting measurement data, event information, and operating as an oscilloscope function.
  • Adjustable voltage flicker filter with fire protection
  • Adjustable third harmonic filter
  • Dual threshold: total RMS and DC component

Technical data



Display Color, backlit LCD
Resolution 3 digits
Decimal point position Automatic
Bargraph 10 levels
Measurement type Type AC, A, F, B - TRMS
Display refresh rate Every 500ms (average value for the period)
Bandwidth DC; 2.5Hz – 3kHz
Accuracy ±0.5%
Voltage flicker filter Compliant with IEC 62423, VDE 0664-T-100
Fire protection 300mA
Third harmonic filter Attenuation of 80% at 150Hz
Setting range for current IΔN 0.03 ÷ 30 A; TDA… - TDC…
30 ÷ 500mA; 500mA ÷ 1.5A (TC) TDB…3CM
300mA ÷ 5A; 5A ÷ 15AQ (TC) TDB…003
Setting range for operating current IΔNO 80% - 98% IΔN
Contact configuration 6x SPST (COM, NO1, NO2, NO3, NO4, NO5, NO6)
Setting range for DC operating current IΔN 5% - 100% IΔN DC(min. 6mAdc)
Time-current characteristic settings (current-dependent times) Instantaneous: IΔN = 30mA
Selective 60ms: IΔN > 30mA
Delayed 20ms – 30s: IΔN > 30mA
Time-current characteristic settings (current-independent times) Delayed 20ms: IΔN = 30mA
Delayed 20ms – 30s: IΔN > 30mA
Contact SPDT (COM, NO, NC)
Rated load 6A, 250VAC AC1; 6A, 24VDC DC1
3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
Protection Standard (ND) or increased (NE)
Isolation levels In accordance with IEC 61010-1, IEC 60947-1
Operating temperature 0…+50˚C
Storage temperature -30˚C…+70˚C
Self-extinguishing housing (material) UL 94-V0
Protection level for built-in applications IP52
Protection level for terminal applications IP20
Compliant with EN 60947-2

Additional technical data



Automatic connection test Secondary voltage impulse
Alarm (optional) SPDT (COM, NO, NC)
Alarm settings Disabled, 5-100% IΔN
Special function Reclose; 2nd Trip and IΔnDC
Relay rated load 6A, 250VAC AC1; 6A, 24VDC DC1
3A, 250VAC AC15; 2A, 24VDC DC13 (IEC60947-5-1)
PhotoMOS Transistor Connector rated load 100mA, 250VAC/DC (CAT II) – 150VAC/DC (CAT III) 350VPK-PK (with overload)
Protection Standard (ND) or increased (NE)
Test-Reset Input (optional) Signal > 2s
Modbus RTU (optional) Isolated RS485, A+, B-, GND (option)
Data transfer rate 9600, 19200, 38400, 57600 bit/s
Programmable parameters Parity bit and STOP
Programmable addresses 1 – 247
Oscilloscope function 120 samples (12-bit), with time and amplitude base settings
Real-time clock (optional) RTC with backup battery power
Event logging Last 10 events with time stamps


Type designation X _ _ D B 3 _ _ _ X52U_____ _ _ _ _ _
Input Type Type B 6 inputs Type B X52UB64DC
Type A-F 6 inputs Type A-F X52UL6030
Mixed 1 input Type B 5 inputs Type A-F X52UX6C15
2 inputs Type B 4 inputs Type A-F X52UX6C24
3 inputs Type B 3 inputs Type A-F X52UX6C33
4 inputs Type B 2 inputs Type A-F X52UX6C42
5 inputs Type B 1 input Type A-F X52UX6C51
Options No options X60
Alarm + input reset R61
Modbus RTU M60
Power supply 20 – 60VAC/DC <4VA/2.5W L
80 – 260V AC/DC <6.5VA/2.5W H
Real-time clock No -
Yes C
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