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Current transformers for new systems or retrofits

Plug-in current transformer (E)ASK 31.3

Plug-in transformers are suitable for primary rated currents from 75 A to 750 A and for use as measuring transformers of different currents. Can be used for round cables and busbars. Are often permanently installed in electrical systems. For installation, the respective conductor must be disconnected and routed through the current transformer. Approved as EASK for billing measurements.

    Variants and tender texts
    ASK 31.3 500/5A Item number: 001656
    Plug-in current transformer 500A/5A, load 10VA, class 1
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    ASK 31.3 600/5A Item number: 001657
    Plug-in current transformer 600A/5A, load 10VA, class 1
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    ASK31.3 100/5A Item number: 001651
    Plug-in current transformer 125A/5A, load 2.5VA, class 1
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    ASK31.3 125/5A Item number: 002623
    Plug-in current transformer 125A/5A, load 2.5VA, class 1
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    ASK 31.3 150/5A Item number: 001655
    Plug-in current transformer 150A/5A, load 2.5VA, class 1
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    ASK 31.3 200/5A Item number: 001652
    Aufsteckstromwandler 200A/5A, Bürde 5,0VA, Klasse 1
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    ASK 31.3 300/5A Item number: 001658
    Plug-in current transformer 300A/5A, load 5.0VA, class 1
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    ASK 31.3 400/5A Item number: 001654
    Plug-in current transformer 400A/5A, load 10VA, class 1
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    ASK 31.3 250/5A Item number: 001653
    Plug-in current transformer 250A/5A, load 5.0VA, class 1
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    ASK 31.3 750/5A Item number: 002138
    Plug-in current transformer 750A/5A, load 10VA, class 1
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Plug-in current transformer XCTB series

Plug-in current transformers for power quality applications are designed for use in networks subject to harmonics. In conjunction with the UBN PQ network analyzers, they ensure highly accurate transmission up to 20 kHz.

    characteristics
    • In conjunction with the UBN PQ network analyzers, they ensure highly accurate transmission up to 20 kHz.
    • High insulation test voltage up to 6 kV
    • Tested lightning surge voltage for 690 V systems according to IEC 61439-1 /-2
    • Safe housing with high flame retardancy
    • Protection against contamination through optimized housing
    • Time-saving and screwless connection technology for solid and flexible conductors
    • Shock and shakeproof
    • Maintenance free
    Technical data
    Primary rated current 100 A – 2000 A
    Secondary rated current 5 A
    Accuracy class 0.2 / 0.25 / 0.5 (default)
    Rated power 1,5 – 5,0 VA
    Variants and tender texts
    XCTB 31.35 600/5A 5VA KL0.5 Item number: 005035
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Rated primary current: 600 A
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    XCTB 31.35 200/5A 5VA KL0.5 Item number: 005030
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 200 A
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    XCTB 31.35 250/5A 5VA KL0.5 Item number: 005031
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 250 A
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    XCTB 31.35 400/5A 5VA KL0.5 Item number: 005033
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 400 A
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    XCTB 31.35 500/5A 5VA KL0.5 Item number: 005034
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Rated primary current: 500 A
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    XCTB 31.35 125/5A 2,5VA KL0.5 Item number: 005028
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 125 A
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    XCTB 31.35 150/5A 2,5VA KL0.5 Item number: 005029
    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 150 A
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    XCTB 31.35 100/5A 2,5VA KL0.5 Item number: 005027

    Dimensions H x W x D: 80.9 x 60 x 52 mm

    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm

    Round conductor: Ø 25.7 mm

    Primary rated current: 100 A
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    XCTB 31.35 300/5A 5VA KL0.5 Item number: 005032

    Dimensions H x W x D: 80.9 x 60 x 52 mm

    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm

    Round conductor: Ø 25.7 mm

    Primary rated current: 300 A
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    XCTB 31.35 750/5A 5VA KL0.5 Item number: 005036

    Dimensions H x W x D: 80.9 x 60 x 52 mm
    Primary conductor bar: 30 x 10 mm; 25x12mm; 20x20mm
    Round conductor: Ø 25.7 mm
    Primary rated current: 750 A
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Cable conversion current transformer KBU

Transformer with divisible measuring core for primary rated currents from 100 A to 5000 A. Secondary rated current 5 A or 1 A, in accuracy classes 0.5 and 1. Can be used for round cables and busbars. Transformer with divisible measuring core for primary rated currents from 100 A to 5000 A. Secondary rated current 5 A or 1 A, in accuracy classes 0.5 and 1. Can be used for round cables and busbars.

    Variants and tender texts
    KBU 23 100/5A Item number: 001713
    Cable conversion current transformer 100A/5A, burden 1.25VA,
    Class 3, round conductor 20mm, busbar 20×30 mm
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    KBU 23 150/5A Item number: 002121
    Cable conversion current transformer 150A/5A, burden 1.5VA,
    Class 3, round conductor 20mm, busbar 20×30 mm
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    KBU 23 200/5A Item number: 002122
    Cable conversion current transformer 200A/5A, burden 2.5VA,
    Class 3, round conductor 20mm, busbar 20×30 mm
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    KBU 23 250/5A Item number: 002123
    Cable conversion current transformer 250A/5A, burden 1.5VA,
    Class 1, round conductor 20mm, busbar 20×30 mm
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    KBU 23 300/5A Item number: 002124
    Cable conversion current transformer 300A/5A, burden 3.75VA,
    Class 1, round conductor 20mm, busbar 20×30 mm
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    KBU 23 400/5A Item number: 002125
    Cable conversion current transformer 400A/5A, burden 5VA,
    Class 1, round conductor 20mm, busbar 20×30 mm
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Cable conversion current transformer KBR

    Variants and tender texts
    KBR 32 250/1A Item number: 003287
    Kabelumbau-Stromwandler 250A/1A, Bürde 5VA,
    Class 3, cable 2.5 m, round conductor 32.5 mm
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    KBR 32 200/1A Item number: 003286
    Cable conversion current transformer 200A/1A, burden 5VA,
    Class 3, cable 2.5 m, round conductor 32.5 mm
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    KBR 18 50/1A Item number: 003276
    Cable conversion current transformer 50A/1A, burden 1VA,
    Class 3, cable 2.5 m, round conductor 18 mm
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    KBR 18 75/1A Item number: 003277
    Cable conversion current transformer 75A/1A, burden 1VA,
    Class 3, cable 2.5 m, round conductor 18 mm
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    KBR 18 100/1A Item number: 003278
    Cable conversion current transformer 100A/1A, burden 1.25VA,
    Class 3, cable 2.5 m, round conductor 18 mm
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    KBR 18 125/1A Item number: 003279
    Cable conversion current transformer 125A/1A, burden 1.5VA,
    Class 3, cable 2.5 m, round conductor 18 mm
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    KBR 18 150/1A Item number: 003280
    Cable conversion current transformer 150A/1A, burden 2VA,
    Class 3, cable 2.5 m, round conductor 18 mm
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    KBR 32 100/1A Item number: 003283
    Cable conversion current transformer 100A/1A, burden 2.5VA,
    Class 3, cable 2.5 m, round conductor 32.5 mm
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    KBR 32 125/1A Item number: 003284
    Cable conversion current transformer 125A/1A, burden 3VA,
    Class 3, cable 2.5 m, round conductor 32.5 mm
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    KBR 32 150/1A Item number: 003285
    Cable conversion current transformer 125A/1A, burden 3VA,
    Class 3, cable 2.5 m, round conductor 32.5 mm
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Flexible Rogowski coil MFC150

Rogowski coils are suitable for use in systems with limited space. They enable subsequent installation without having to cut the conductors. Thanks to the integrated amplifier in our measuring devices, they can measure a current range from mA to kA.

* The flexible MFC150 Rogowski coil can only be ordered as a set, in combination with UBN40 or UBN309.

Differential current transformer DACT series

The DACT plug-in differential current transformers are designed to record small currents. In conjunction with the UBN AM / PQ EW.Fi option, they can be used for differential and residual current monitoring of machines and systems.

    characteristics
    • Detection of the smallest fault currents
    • Safe housing with high flame retardancy
    • Tamper protection through sealable covers
    • High measurement accuracy up to class 0.2S
    • Maintenance free
    • Simple and quick assembly
    Technical data
    Working temperature range -10° C > T > + 70°C
    Rated voltage 800 V
    Rated impulse voltage 8 kV
    Max. Consumption (per phase) max. 0,15VA
    Pollution level III
    Technical standards IEC 60664-1 / IEC
    Variants and tender texts
    DACT60 Item number: 005045
    Primary conductor opening: Ø 60 mm
    Dimensions L x W x H: 135 x 37 x 117 mm
    Terminal connections: spring-loaded terminals, 4-pin; 0.08…2.5 mm²
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    DACT120 Item number: 005046
    Primary conductor opening: Ø 120 mm
    Dimensions L x W x H: 210 x 37 x 210 mm
    Terminal connections: spring-loaded terminals, 4-pin; 0.08…2.5 mm²
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    DACT20 Item number: 005043
    Primary conductor opening: Ø 20 mm
    Dimensions L x W x H: 82 x 30 x 63 mm
    Terminal connections: spring-loaded terminals, 4-pin; 0.08…2.5 mm²
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    DACT35 Item number: 005044
    Primary conductor opening: Ø 35 mm
    Dimensions L x W x H: 104.52 x 30 x 86.5 mm
    Terminal connections: spring-loaded terminals, 4-pin; 0.08…2.5 mm²
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