Measuring relays for current monitoring

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Current relays for monitoring over- and undercurrent

Current relays are electronic measuring relays for monitoring alternating and direct currents for exceeding or falling below a set threshold value. Depending on the version, one or more loads can be monitored with one device. Special applications where measuring relays can be used for current monitoring are stone and woodworking machines and wherever it is necessary to monitor over- or undercurrent.

Current Monitor IK 8839

Features

  • According to IEC/EN 60255-1
  • Measuring range 0.175 … 1 A
  • Fixed switching point setting
  • High maximum load
  • 1 changeover contact
  • LED indication for operation and output status
  • Width 17.5 mm
Datasheet IK 8839

Overcurrent Relay IK 9270

Features

  • According to IEC/EN 60255-1
  • IP 9270, SP 9270CT: 3-phase
    IK 9270, SK 9270, IL 9270, SL 9270CT: single phase
  • Measuring ranges from AC 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 43880
    – 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
Datasheet IK 9270

Undercurrent Relay IK 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet IK 9271

Overcurrent Relay IK 9272

Advantages

  • Adjustable switching delay
  • Closed circuit operation (output relay not activated in case of error)
  • Optionally open circuit operation (output relay activated in case of error)
  • Optionally manual reset, reset button on the front

Features

  • According to IEC/EN 60255
  • Single phase
  • 1 changeover contact
  • Measuring ranges from 0.05 … 10 A
  • Fixed hysteresis approx. 4 %
  • Hysteresis function (auto reset)
  • LED indication for auxiliary voltage and contact position
  • Devices available in 2 enclosure versions:
    IK 9272: Depth 59 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43880
    SK 9272: Depth 98 mm, with terminals at the top for cabinets with mounting plate and cable duct
  • Width 17.5 mm
 

Undercurrent Relay IK 9273

Features

  • According to IEC/EN 60 255
  • Single phase
  • Measuring ranges from 0.05 … 10 A
  • Setting value adjustable from 0.1 … 1 IN
  • Fixed hysteresis approx. 4 %
  • Settable switching delay
  • Closed circuit operation
  • Optionally open circuit operation
  • Automatic reset
  • Optionally manual reset, reset button on the front
  • LED indication for auxiliary voltage and contact position
  • 1 changeover contact
  • Devices available in 2 enclosure versions:
    IK 9273: depth 59 mm, with terminals at the bottom for
    installation systems and industrial distribution
    systems according to DIN 43 880
    SK 9273: depth 98 mm, with terminals at the top for cabinets
    with mounting plate and cable duct
  • Width 17.5 mm
Datasheet IK 9273

Overcurrent Relay SK 9270

Features

  • According to IEC/EN 60255-1
  • IP 9270, SP 9270CT: 3-phase
    IK 9270, SK 9270, IL 9270, SL 9270CT: single phase
  • Measuring ranges from AC 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 43880
    – 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
Datasheet SK 9270

Undercurrent Relay SK 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet SK 9271

Overcurrent Relay SK 9272

Advantages

  • Adjustable switching delay
  • Closed circuit operation (output relay not activated in case of error)
  • Optionally open circuit operation (output relay activated in case of error)
  • Optionally manual reset, reset button on the front

Features

  • According to IEC/EN 60255
  • Single phase
  • 1 changeover contact
  • Measuring ranges from 0.05 … 10 A
  • Fixed hysteresis approx. 4 %
  • Hysteresis function (auto reset)
  • LED indication for auxiliary voltage and contact position
  • Devices available in 2 enclosure versions:
    IK 9272: Depth 59 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43880
    SK 9272: Depth 98 mm, with terminals at the top for cabinets with mounting plate and cable duct
  • Width 17.5 mm
Datasheet SK 9272

Undercurrent Relay SK 9273

Features

  • According to IEC/EN 60 255
  • Single phase
  • Measuring ranges from 0.05 … 10 A
  • Setting value adjustable from 0.1 … 1 IN
  • Fixed hysteresis approx. 4 %
  • Settable switching delay
  • Closed circuit operation
  • Optionally open circuit operation
  • Automatic reset
  • Optionally manual reset, reset button on the front
  • LED indication for auxiliary voltage and contact position
  • 1 changeover contact
  • Devices available in 2 enclosure versions:
    IK 9273: depth 59 mm, with terminals at the bottom for installation systems and industrial distribution systems according to DIN 43 880
    SK 9273: depth 98 mm, with terminals at the top for cabinets with mounting plate and cable duct
  • Width 17.5 mm
Datasheet SK 9273

Current Relay MK 9053N

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Precise and reliable

Features

  • According to IEC/EN 60255-1, IEC/EN 60947-1
  • To: Monitor DC and AC
  • Measuring ranges from 2 mA up to 10 A
  • High overload possible
  • Input frequency up to 5 kHz
  • Galvanic separation between auxiliary circuit – measuring ciruit
  • With start-up delay
  • With time delay, up to max. 100 sec
  • As option with remote potentiometer
  • As option with manual reset
  • Option with fixed settings possible
  • LED indicators for operation and contact position
  • As option with pluggable terminal blocks for easy exchange of devices
    – With screw terminals
    – Or with cage clamp terminals
  • Width: 22.5 mm
Datasheet MK 9053N

Current relay MK 9063N

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Precise and reliable
  • Min-, Max. value or window monitoring
  • Measuring ranges up to AC/DC 10 A
  • Simple configuration and fault diagnostic
  • Auxiliary voltage ranges DC 24 V, AC/DC 24 … 230 V or AC/DC 110 … 400 V

Features

  • According to IEC/EN 60255-1
  • AC/DC current measuring (single-phase)
  • Start up delay, on delay
  • Manual reset
  • LCD for indication of the measuring values
  • Relay output
    MK 9063N: 1 changeover contact
    MH 9063: 2 x 1 changeover contacts
  • Relay function selectable (energized/de-energized on trip)
  • As option with plugable terminal blocks for easy exchange of devices
    – with screw terminals
    – or with cage clamp terminals
  • Width MK 9063N: 22.5 mm
  • Width MH 9063: 45.0 mm
Datasheet MK 9063N

Current relay ML 9701

Advantages

  • Purely electromechanical design
  • High insensitivity to interference in the radio frequency range and high voltage peaks
  • Easy device adjustment
  • Can be used for under- or overcurrent detection

Features

  • According IEC/EN 60255-1
  • Single-phase
  • Measuring ranges from 0,5 to 12 A
  • Settable response value (Measuring value)
  • Without auxiliary voltage
  • Width 22.5 mm
Datasheet ML 9701

Overcurrent Relay IL 9270

Features

  • According to IEC/EN 60255-1
  • IP 9270, SP 9270CT: 3-phase
    IK 9270, SK 9270, IL 9270, SL 9270CT: single phase
  • Measuring ranges from AC 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 43880
    – 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
Datasheet IL 9270

Undercurrent Relay IL 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet IL 9271

Over- and Undercurrent Relay IL 9277

Features

  • 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 AC 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
Datasheet IL 9277

Current Relay RL 9853

Advantages

  • Preventive maintenance
  • For better productivity
  • High repeat accuracy
  • Wide measuring voltage range
  • Easy setting

Features

  • According to IEC/EN 60255-1
  • For monitoring of current in DC and AC systems
  • Detection of over- or undercurrent in AC- or DC mains
  • Galvanic separation between auxiliary circuit – measuring ciruit
  • Output: 1 changeover contact
  • De-Energized on trip
  • Adjustable switching current
  • Adjustable hysteresis for reset
  • Adjustable switching delay
  • Fast fault detection
  • Width: 35 mm
Datasheet RL 9853

Overcurrent Relay SL 5201/20007CT

Features

  • According to IEC/EN 60 255-1
  • 2 independent relays in once enclosure
  • 2 measuring ranges from 0.5 to 5 A
  • Adjustable response values
  • Fixed hysteresis
  • Adjustable switching delay
  • Closed circuit operation
  • LED indicators
  • With auyiliary voltage
  • Galvanic separation between auxiliary circuit and measuring circuit
  • 2 models available:
    IL 5201: 63 mm deep with terminals near to the bottom to be mounted in consumer units or industrial distribution systems according to DIN 43 880
    SL 5201: 100 mm deep with terminals near to the top to be mounted in cabinets with mounting plate and cable ducts
  • Width: 35 mm
Tender text SL 5201/20007CT

Overcurrent Relay SL 9270

Features

  • According to IEC/EN 60255-1
  • 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
  • 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 43880
    – 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
Datasheet SL 9270

Overcurrent Relay SL 9270CT

Features

  • 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
  • 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
Datasheet SL 9270

Undercurrent Relay SL 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet SL 9271

Undercurrent Relay SL 9271CT

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet SL 9271

Over- and Undercurrent Relay SL 9277

Features

  • According to IEC/EN 60 255-1
  • 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
Datasheet SL 9277

Over- and Undercurrent Relay SL 9277CT

Features

  • According to IEC/EN 60 255-1
  • 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
DATASHEET SL 9277CT

Undercurrent Relay AI 837

Features

  • According to nach IEC/EN 60 255-1
  • Single-phase
  • Without auxiliary supply
  • Measuring ranges from 0.5 to 16 A
  • Settable response value
  • 1 changeover contact
  • Width 45 mm
Datasheet AI 837

Overcurrent Relay AI 838

Features

  • According to nach IEC/EN 60 255-1
  • Single-phase
  • Without auxiliary supply
  • Measuring ranges from 0.5 to 16 A
  • Settable response value
  • 1 changeover contact
  • Width 45 mm
Datasheet AI 838

Line breakage relay AI 940

Advantages

  • Ohne separate Hilfsspannung
  • Für Dauerströme bis 16 A

Features

  • Nach IEC/EN 60255-1
  • 3-phasig
  • Aderbrucherkennung bei Strömen < 0,5 A
  • 1 Wechsler
  • 45 mm Baubreite
Datenblatt AI 940

Current Relay BA 9053

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Precise and reliable

Features

  • According to IEC/EN 60255-1, IEC/EN 60947-1
  • To: Monitor DC and AC
  • Measuring ranges from 2 mA to 25 A
  • Optionally with 3 measuring ranges 0.1 up to 25 A
  • High overload possible
  • Input frequency up to 5 kHz
  • Galvanic separation between auxiliary circuit – measuring ciruit
  • Auxiliary supply AC and AC/DC
  • Optionally with start-up delay
  • With time delay, up to max. 100 sec
  • Optionally with safe separation to IEC/EN 61140 (on request)
  • As option with manual reset
  • Option with fixed settings possible
  • LED indicators for operation and contact position
  • Width: 45 mm
Datasheet BA 9053

Current Relay BA 9053/041

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Precise and reliable

Features

  • According to IEC/EN 60255-1, IEC/EN 60947-1
  • To monitor AC
  • Measuring range from 1 … 10 A (others on request)
  • High overload possible
  • Galvanic separation between auxiliary circuit – measuring ciruit
  • Auxiliary supply AC/DC
  • With time delay, up to max. 100 sec
  • LED indicators for operation and contact position
  • Width 45 mm
Datasheet BA 9053/041

Current relay MH 9063

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Precise and reliable
  • Min-, Max. value or window monitoring
  • Measuring ranges up to AC/DC 10 A
  • Simple configuration and fault diagnostic
  • Auxiliary voltage ranges DC 24 V, AC/DC 24 … 230 V or AC/DC 110 … 400 V

Features

  • According to IEC/EN 60255-1
  • AC/DC current measuring (single-phase)
  • Start up delay, on delay
  • Manual reset
  • LCD for indication of the measuring values
  • Relay output
    MK 9063N: 1 changeover contact
    MH 9063: 2 x 1 changeover contacts
  • Relay function selectable (energized/de-energized on trip)
  • As option with plugable terminal blocks for easy exchange of devices
    – with screw terminals
    – or with cage clamp terminals
  • Width MK 9063N: 22.5 mm
  • Width MH 9063: 45.0 mm
Datasheet MH 9063

Current measuring transducer MH 9353

Advantages

  • Measuring relay and transducer in one unit
  • Simple setting
  • Cost saving
  • Reduced wiring

Features

  • According to IEC/EN 60255-1
  • Galvanic separate analogue signals, optionally with
    – 0 … 20 mA and 0 … 10 V or
    – 4 … 20 mA and 2 … 10 V
  • Adjustable response value
  • Fixed hysteresis
  • LED indication for auxiliary voltage and contact position
  • With auxiliary voltage
  • As option with pluggable terminal blocks for easy exchange of devices
    – With screw terminals
    – Or with cage clamp terminals
  • Width: 45 mm
Datasheet MH 9353

Overcurrent Relay IP 9270

Features

  • According to IEC/EN 60255-1
  • IP 9270, SP 9270CT: 3-phase
    IK 9270, SK 9270, IL 9270, SL 9270CT: single phase
  • Measuring ranges from AC 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 43880
    – 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
Datasheet IP 9270

Undercurrent Relay IP 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet IP 9271

Over- and Undercurrent Relay IP 9277

Features

  • 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 AC 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
Datasheet IP 9277

Current Asymmetry Relay IP 9278

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Auxiliary supply and measuring input galvanic separated
  • With integrated current transformer
  • As option with external remote reset

Features

  • According to IEC/EN 60255-1
  • 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
  • Width 70 mm
Datasheet IP 9278

Overcurrent Relay SP 9270

Features

  • According to IEC/EN 60255-1
  • 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
  • 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
Datasheet SP 9270

Overcurrent Relay SP 9270CT

Features

  • 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
  • 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
Datasheet SP 9270CT

Undercurrent Relay SP 9271

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet SP 9271

Undercurrent Relay SP 9271CT

Features

  • According to IEC/EN 60255-1
  • IP 9271, SP 9271, SP 9271CT: 3-phase
    IK 9271, IL 9271, SK 9271, SL 9271, SL 9271CT: Single phase
  • Measuring ranges from AC 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
Datasheet SP 9271CT

Over- and Undercurrent Relay SP 9277

Features

  • 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
Datasheet SP 9277

Over- and Undercurrent Relay SP 9277CT

Features

  • According to IEC/EN 60 255-1
  • 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
Datasheet SP 9277CT

Current Asymmetry Relay SP 9278CT

Advantages

  • Preventive maintenance
  • For better productivity
  • Quicker fault locating
  • Auxiliary supply and measuring input galvanic separated
  • With integrated current transformer
  • As option with external remote reset

Features

  • According to IEC/EN 60255-1
  • 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
  • Width 70 mm
 
Datasheet SP 9278CT

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