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• According to IEC/EN 60 255, IEC/EN 61 810-1
• Forcibly guided contacts according to IEC 61810-3
• Max. 6 output contacts
• High thermal current Ith = 8 A
• LED for operating state
• Devices available in 2 enclosure versions:
IP 3078: depth 61 mm, with terminals at the bottom for
installation systems and industrial distribution
systems according to DIN 43 880
SP 3078: depth 100 mm, with terminals at the top
• Width 70 mm

• According to IEC/EN 61 131-2, IEC/EN 50 178
• CANopen interface according to DS301 version 3.0 (Plug and Play
selectable), as option with galvanic separation
• 8 digital inputs for DC 24 V
• LED indicators for supply voltage and Bus status
• 70 mm width

• According to IEC/EN 61 131-2, IEC/EN 50 178
• CANopen interface according to DS301 version 3.0 (Plug and Play
selectable), as option with galvanic separation
• 8 relay outputs
• LED indicators for supply voltage, Bus status and state of contact
• 70 mm width

• According to IEC/EN 61 557-8
• For single and 3-phase AC-systems up to 0 ... 500 V and 10 ... 10000 Hz
• Adjustable tripping value RAL of 5 ... 100 kΩ
• Monitors also disconnected voltage systems
• De-energized on trip
• Auxiliary voltage Measuring Circuit and output contacts are galvanically separated
• Manual and auto reset
• With test and reset button
• Connections of external test and reset buttons possible
• LED indicators for operation and alarm
• 2 changeover contacts
• IL/SL 5880/200 with additional prewarning
- adjustable prewarning value 10 kΩ ... 5 MΩ
- output function programmable
• Variant IL/SL 5880/300 according to DIN VDE 0100-551 for mobile generator sets available
• 4 models available:
IL 5880, IP 5880: 61 mm deep with terminals near to the bottom to be mounted in consumer units
or industrial distribution systems according to DIN 43 880
SL 5880, SP 5880: 98 mm deep with terminals near to the top to be mounted in cabinets with
mounting plate and cable ducts
• DIN rail or screw mounting
• 35 mm width

• According to IEC/EN 61 557-8
• For rooms used for medical purposes
according to IEC 60364-7-710, DIN VDE 0100-710
• For three-phase and A.C. power systems with 0 … 500 V
and 10 … 1000 Hz (IT power systems)
• Adjustable alarm value for ground fault RAL of 50 … 500 kΩ
• Measuring circuit with broken wire protection
• As option, programmable for storing or non-storing of errors
• With reset and test button
• Additional external reset and test buttons can be connected
• LED indicators for operation, insulation fault, and interruption of
Measuring circuit
• 2 changeover contacts
• With LED chain for indication of the current insulation status
• IP 5880/711 for connection of the test and display panel UP 5862
• 52.5 mm width

• According to
- Performance Level (PL) e and category 4 to EN ISO 13849-1
- SIL Claimed Level (SIL CL) 3 to IEC/EN 62061
- Safety Integrity Level (SIL) 3 to IEC/EN 61508
• According to EN 50156-1 for furnaces
• Single channel or two-channel operation
• Output: max. 4 NO contacts
• AC 230 V model with galvanic separation
• LED indicator for channel 1 / 2 and state of operation
• Short circuit detection between terminal Y1 and common
• BG 5924 with:
- Removable terminal strips
- Wire connection: also 2 x 1.5 mm2 stranded ferruled (isolated),
DIN 46 228-1/-2/-3/-4 or 2 x 2.5 mm2 stranded ferruled DIN 46 228-1/-2/-3
• BG 5924: width 22.5 mm
• IP 5924: width 70 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• Recognizes fuse failures in three-phase mains up to 3 AC 690 V
• Can be used for all types and sizes of fuses
• Independent of phase sequence
• Signals even if loads are switched off
• No malfunction on
- asymmetrical mains
- mains with harmonic waves
- motors producing feedback
• Shorter response time than with motor circuit-breakers
• Green LED for intact fuses
• Red LED for fuse failure
• As option: open/closed circuit operation in the case
of IP 9075 programmable via X4-X5 or X3-X4
• As option: with manual reset function and remote reset,
programmable via X1-X2
• As option: 1 NO contact or 2 changeover contacts
• 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
• IL 9075, SL 9075: width 35 mm
IP 9075, SP 9075: width 70 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• Identification of overvoltage, undervoltage and phase failure
• With asymmetry identification as an option
• Mains fault diagnostics with a number of LEDs
• Setting values for overvoltage and undervoltage can be set
separately
• Large Setting Ranges 0.9 ... 1.3 UN and 0.7 ... 1.1 UN
• Time delay variable between 0.1 ... 20 s
• Closed circuit operation
• No auxiliary voltage
• Independant of phase sequence
• As option with phase sequence detection
• Single-phase connection possible
• Optionally for 3P3W Systems
• 2 changeover contacts, at IP/SP 9077 2 x 2 changeover contacts
• 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
• IP 9077, SP 9077: width 70 mm

• According to IEC/EN 60 255-1
• IP 9270, SP 9270CT: 3-phase
IK 9270, SK 9270, IL 9270, SL 9270CT: single phase
• Measuring ranges from 0.1 ... 100 A
• Settable response value
• Fixed hysteresis
• Settable time delay
• De-energized on trip
• As option energized on trip
• LED indicators
• With auxiliary voltage
• Auxiliary supply and measuring input galvanic separated
• Devices available in 2 enclosure versions:
- I-model, e.g. IK _ _ _ _, depth 61 mm
with terminals at the bottom for installation systems and
industrial distribution systems according to DIN 43 880
- S-model, e.g. SK _ _ _ _, depth 100 mm
with terminals at the top for cabinets with mounting plate
and cable duct
• Width IK 9270, SK 9270: 17.5 mm
IL 9270, SL 9270CT: 35 mm
IP 9270, SP 9270CT: 70 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• IP 9271, SP 9271, SP 9271CT: 3-phase
IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: single phase
• Measuring ranges from 0.1 ... 100 A
• IK 9271, SK 9271:
with 4 ranges settable by rotational switch, 1 changeover contact
• IL 9271, SL 9271:
with 5 ranges settable by rotational switch, 1 changeover contact
with 4 ranges programmable by bridges, 2 changeover contacts
• IP 9271, SP 9271: with 1 range, 2 changeover contacts
• Settable response value
• Fixed hysteresis
• Settable time delay
• De-energized on trip
• Optionally energized on trip
• LED indicators
• With auxiliary voltage
• Auxiliary supply and measuring input galvanic separated
• Devices available in 2 enclosure versions:
- I-model, e.g. IK _ _ _ _, depth 61 mm
with terminals at the bottom for installations systems
and industrial distribution systems according to DIN 43 880
- S-model, e.g. SK _ _ _ _, depth 100 mm
with terminals at the top for cabinets with mounting plate
and cable duct
• Width IK 9271, SK 9271: 17.5 mm
IL 9271, SL 9271, SL 9271CT: 35 mm
IP 9271, SP 9271, SP 9271CT: 70 mm

• According to IEC/EN 60 25-1
• IP 9277, SP 9277, SP 9277CT: 3-phase
IL 9277, SL 9277, SL 9277CT: singele phase
• Detects over- and undercurrent
• Measuring ranges from 0.1 ... 15 A
• With built in current transformer for 0.5 ... 100 A
• IL 9277, SL 9277 with 4 programmable ranges
• Settable 0.1 ... 1 IN
• Separate setting for over- and undercurrent
• Fixed hysteresis approx. 4 %
• Settable time delay
• IP 9277, SP 9277 with separate settable time delay for
over- and undercurrent
• De-energized on trip
• LED indicators for over-, under- and normal current
• Auxiliary supply and measuring input galvanic separated
• IL 9277, SL 9277 with one output relay for over- and
undercurrent
• IP 9277, SP 9277 with separate output relays for over- and
undercurrent
• Optionally energized on trip
• Devices available in 2 enclosure versions:
-- I-model, e.g. IL _ _ _ _, depth 61 mm
with terminals at the bottom for installations systems
and industrial distribution systems according to DIN 43 880
-- S-model, e.g. SL _ _ _ _, depth 100 mm
with terminals at the top for cabinets with mounting plate
and cable duct
• DIN rail or screw mounting
• Width IL 9277, SL 9277, SL 9277CT: 35 mm
IP 9277, SP 9277, SP 9277CT: 70 mm

• According to IEC/EN 60 255, DIN VDE 0435-303
• IP 9278, SP 9278: 3-phase
• Measuring range IP 9278, SP 9278: up to 15 A
SP 9278CT: up to 100 A
• 2 changeover contacts
• Adjustable asymmetry
• Settable time delay
• Open circuit operation
• LED indicators
• With auxiliary voltage
• Auxiliary supply and measuring input galvanic separated
• As option with external remote reset
• Width 70 mm

• According to IEC/EN 62 020
• for AC and pulsating DC currants Type A to IEC/TR 60755
• 9 tripping values from 10 mA to 10 A or from 10 mA ... 30 A
• Frequency range 20 ... 2000 Hz
• Selection of manual or automatic reset
• With prewarning
• With test and reset button
• Broken wire detection
• Short reaction time
• With adjustable delay tv
• De-energized on trip
• LED indication for auxiliary supply and state of contact
• 2 x 1 changeover contact
• With sealable cover
• Devices available in 3 enclosure versions:
IR 5882: 63 mm deep with terminals near to the bottom to be
mounted in consumer units or industrial distribution
systems according to DIN 43 88
- width 105 mm
- with internal residual current transformer

• According to IEC/EN 61 810-1
• Relay, triac or transistor output
• Protective separation according to IEC/EN 61 140,
IEC/EN 60 947-1 on devices with relay output (only at
IK 3070.01 / _0_,
IK 3070.02 /_0_,
IK 3070.11 /_0_)
• LED as operating position display
• Optionally input wiring with recovery diode or MOV
• Optionally for small switching currents
• Optionally with forcibly guided contacts
• As option with 3-position test switch:
Auto, Off, Manual/Sensor control (+ 24 V)
• As option with semiconductor output
- for high switching frequency
- input protection with varistor
• Optionally interface relay system to reduce the amount of wiring
• IK 3070: width 17.5 mm
IS 3070: width 140 mm

• Width 32.5 mm
• Max. 6 plus-minus-terminal screws with
self raising terminal wahsers
• Mounting facility for screw-mounting of a PCB
• Terminal cover for contact protection
complies with VBG 4 as option