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• Insulation troubleshooting in DC, AC and mixed IT systems in connection with the locating current injector RR 5886 according to DIN EN 61557-9 (VDE 0413-9):2009 and DIN EN 61557-1
(VDE 0413-1)
• Insulation coordination according to IEC 60664-1
• Connection of max. 4 or 8 differential current transformers depending on the design
• RS-485 bus connection to synchronise the test current output and optionally for the connection to the EDS measuring bus for reading insulation fault currents
• Status output of insulation fault detection via external switching output
• Memory characteristics adjustable via bridge Y1-Y2
• Collective signalling relay to output preliminary warning and alarm states
• Pushbutton for manual reset of alarm states as well as testing of differential current transformers and their calibration
• Terminal connection for the storage of alarm states
• Width: 105 mm

• According to IEC/EN 60 255, IEC/EN 61 810-1
• Protective separation according to IEC/EN 61 140,
IEC/EN 60 947-1 in configuration with 1 changeover contact
• With input wiring protection against voltage surges
• With 1 or 2 changeover contacts as options
• High permanent current Ith
• For switching low loads as an option
• LED indicator
• Devices available in 2 enclosure version:
IK 3076: depth 59 mm with terminals at the bottom for
installation systems and industrial distribution systems
according to DIN 43 880
SK 3076: depth 98 mm with terminals at the top for
cabinets with mounting plate and cable duct
• Width 17.5 mm

• According to IEC/EN 61 812-1
• 1 changeover contact
• Delay up to 60 min.
• Repeat accuracy ≤ 1 %
• LED indicator for contact position
• Devices available in 2 enclosure versions:
IK 7813: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7813: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable ducts
• Width 17.5 mm

• According to IEC/EN 61 812-1
• 4 time ranges up to 640 min.
• Repeat accuracy ≤ 1 %
• LED indicator for contact position
• 1 changeover contact
• Devices available in 2 enclosure versions:
IK 7814: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7814: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable ducts
• Width 17.5 mm

• According to IEC/EN 61 812-1
• Fleeting time up to 60 min.
• Adjustable fleeting time
• Repeat accuracy ≤ ± 1 %
• LED indicator for contact position
• 1 changeover contact
• Devices available in 2 enclosure versions:
IK 7815: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7815: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• Width 17.5 mm

• According to IEC/EN 61 812-1
• Pulse time up to 100 s
• Adjustable flashing time
• Repeat accuracy ≤ 1 %
• Start with a pulse
• LED indicator for contact position
• 1 changeover contact
• Devices available in 2 enclosure versions:
IK 7816: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7816: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable ducts
• Width 17.5 mm

• According to IEC/EN 61 812-1
• 8 functions settable via rotational switch:
- Delay on energisation (AV)
- Fleeting on make (EW)
- Delay pulse (IE)
- Flasher, start with pulse (BI)
- Delay on de-energisation (RV)
- Pulse forming function (IF)
- Fleeting on break (AW)
- Delay on energisation and de-energisation (AV / RV)
• 8 time ranges from 0.02 s ... 300 h selectable via rotational
switches
• Voltage range AC/DC 12 ... 240 V
• With time interruption / time adding input
• Adjustment aid for quick setting of long time values
• Suitable for 2-wire proximity sensor control
• 1 changeover contact
• LED indicators for operation, contact position and time delay
• Devices available in 2 enclosure versions:
IK 7817N: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7817N: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• 17.5 mm width
IK/SK 7817N/500: as IK/SK 7817N/200 but with
• 2 additional functions:
- Cyclic timer, start with break (TP)
- Fleeting on make and break (EW / AW)
• second time setting t2 for functions
- Cyclic timer, start with pulse (TI) or break (TP), based on the
separate setting of pulse and break time the flasher function
can be used as cyclic timer.
- Fleeting on make and break (EW/AW)
- Delay on energisation and de-energisation (AV / RV)
- Delay pulse (IE): setting of pulse length
• Connection facility for external potentiometer 10 kΩ

• According to IEC/EN 61 812-1
• 1 changeover contact
• Delay of 0.05 ... 300 s
• Wide voltage range
• Repeat accuracy ≤ 1 %
• Without auxiliary voltage
• LED indicator for operation
• Devices available in 3 enclosure versions:
IK 7819: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7819,
BC 7938N: depth 98 mm, with terminals at the top for
cabinets with mouning plate and cable duct
• IK/SK 7819: width 17.5 mm
BC 7938N: width 22.5 mm

• According to IEC/EN 61 812-1
• With 4 time ranges of 0.25 ... 640 s or 0.25 ... 640 min
• Adjustable
• With auxiliary voltage
• For wide voltage range AC 50/60 Hz 110 ... 240 V
• Control input operated with nominal voltage;
no voltage free contact necessary
• LED indicator for status of contact
• 1 changeover contact
• Devices available in 2 enclosure versions:
IK 7823: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 7823: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• Width 17.5 mm

• According to IEC/EN 61 812-1
• 8 time ranges from 0.05 s to 300 h selectable via rotational switches
• Impulse and break time separately adjustable
• Selectable start with impulse or break
• Voltage range AC/DC 12 ... 240 V
• Adjustment aid for quick setting of long time values
• Suitable for 2-wire proximity sensor control
• LED indicators for operation, contact position and time delay
• 1 changeover contact
• As option connection of 2 remote potentiometers 10 kΩ
• Devices available in 2 enclosure versions:
IK 7854: depth 59 mm, with terminals at the bottom for installation
systems and industrial distribution systems according to
DIN 43 880
SK 7854: depth 98 mm, with terminals at the top for cabinets with
mounting plate and cable duct
• 17.5 mm width

• According to IEC/EN 60 669
• 2 separate systems at 17.5 mm width
• Space saving
• Reduced wiring
• Contacts:
IK/SK 8702.01: 16 A
IK/SK 8702.01/200: 10 A
• Silent switching
• 10 mA / 5 mA glow lamp load
• Devices available in 2 enclosure versions:
IK 8702: 59 mm deep with terminals near to the bottom to be
mounted in consumer units or industrial distribution
systems according to DIN 43 880
SK 8702: 98 mm deep with terminals near to the top to be mounted
in cabinets with mounting plate and cable ducts
• Width: 17.5 mm

• According to IEC/EN 60 669
• 2 separate systems at 17.5 mm width
• Space saving
• Reduced wiring
• Contacts:
IK/SK 8702.01: 16 A
IK/SK 8702.01/200: 10 A
• Silent switching
• 10 mA / 5 mA glow lamp load
• Devices available in 2 enclosure versions:
IK 8702: 59 mm deep with terminals near to the bottom to be
mounted in consumer units or industrial distribution
systems according to DIN 43 880
SK 8702: 98 mm deep with terminals near to the top to be mounted
in cabinets with mounting plate and cable ducts
• Width: 17.5 mm

• Permanent sound, pitch fixed
• optionally with switchable interval- / permanent sound
• Devices available in 2 enclosure versions:
- I- and-version, e.g. IK _ _ _ _ with depth 61 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43 880
- S-version, e.g. SK _ _ _ _ with depth 100 mm, with terminals at the top for cabinets with mounting plate and cable duct
• Width: 17,5 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• Detection of over- or underspeed or frequency, function
selectable
• 3 selectable ranges for frequency or speed, adjustable tripping
value
• Ranges up to 10 kHz ( 600.000 ipm) available,therefore suitable
for turbines, centrifuges and similar applications
• Adjustable hysteresis
• Input also suitable for SKF sensor bearings
• As option for Namur sensors
• As option for permanent magnet sensors
• As option with adjustable switching delay/start up delay
• On request with manual reset
• IK 9055 and SK 9055: compact version for DC 24 V auxiliary
supply
• IL 9055 and SL 9055: for auxiliary supply up to AC 400 V with
galvanic separation to sensor input
• De-energized on trip (Energized on trip on request)
• LED indicators for auxiliary supply, sensor pulses and contact
position
• 1 changeover contact (2 changeover on request)
• Devices available in 2 enclosure versions:
IK/IL 9055: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK/SL 9055: depth 98 mm, with terminals at the top for
cabinets with mounting plate and cable duct
• IK 9055, SK 9055: width 17.5 mm
• IL 9055, SL 9055: width 35 mm

• According to EN 60 255-1
• Detection of underload (cos ϕ)
• Without auxiliary supply
• Current up to 8 A
Motors up to 5 A nominal current can be connected directly
• Higher currents via current transformer
• SL 9065CT with integrated current transformer for currents up to 100 A
• Adjustable response value
• Automatic reset (Alarm auto reset)
• Adjustable operate delay up to 100 s
• De-energized on trip
• For single and 3-phase loads e.g. motors
• Independent of phase sequence
• 1 changeover contact
• LED indicator voltage supply and alarm
• Devices available in 2 enclosure versions: IK 9065: depth 58 mm,
with terminals at the bottom for installation systems and industrial
distribution systems according to DIN 43 880
SK 9065, SL 9065CT: depth 98 mm, with terminals at the top for
cabinets with mounting plate and cable duct
• IK 9065, SK 9065 width 17.5 mm
SL 9065CT width 35 mm
IK/SK 9065/100: as IK/SK 9065 but:
• programmable for
- automatic reset or manual reset (latched alarm)
- energized or de-energized on trip
• with reset button
• remote reset

• According to IEC/EN 60 255, DIN VDE 0435-303
• Current monitor
• Detection of wire breakage
• Fixed switching points
• For DC 24 V
• Energized on trip
• Green LED display for operating voltage
• Red LED display for contact position
• Devices available in 2 enclosure versions:
IK 9076: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 9076: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• Width 17.5 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of consumers that are switched on and off
• Adjustable between 2 and 20 VA at AC 230 V
• Slide switch for „permanently on“ setting
• LED indicator for contact position
• Devices available in 2 enclosure versions:
IK 9078: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 9078: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• Width 17.5 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• 1 PT100 input, 2-wire connection
• 3 temperature ranges
• Adjustable response value
• Adjustable Hysteresis with wide range 3 ... 30 °C or 1 ... 15°C
• Broken wire detection in sensor circuit
• Programmable hysteresis or latching function via terminal X1
• IK 9094 no galvanic separation between measuring and Auxiliary Circuit
• Closed circuit operation
• LED indicator for operation and state of output relay
• 1 changeover contact
• As option with response value up to - 50°C, e.g. for refrigeration plants
• As option with galvanic separation between measuring and
Auxiliary Circuit
• Devices available in 2 enclosure versions:
I-model: depth 59 mm, with terminals at the bottom for
installation systems and industrial distribution systems
according to DIN 43 880
S-model: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• IK 9094, SK 9094: 17.5 mm width
IL 9094, SL 9094: 35 mm width

• According to IEC/EN 60 255, DIN VDE 0435-303
• Monitoring of overfrequency and underfrequency (selectable)
in A.C. power systems
• Without auxiliary voltage
• Selection of frequency range for 50 or 60 Hz systems
• Adjustable response value
• Adjustable hysteresis
• De-energized on trip (output relay not activated in case of error)
• LED indicators for measuring voltage and contact position
• 1 changeover contact
• As option energized on trip (output relay activated in case of error)
• Devices available in 2 enclosure versions:
IK 9143: depth 58 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SK 9143: depth 98 mm, with terminals at the top for cabinets
with mounting plate and cable duct
• 17.5 mm width