Current transformers & accessories

The link between heavy current and measurement technology

Get an overview of our operating and residual current transformers (RCM), which are both clip-on and divisible.

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Moulded Case Current Transformers class 0,5 ... / 5 A

The safe and versatile moulded case current transformers class 0.5 ... / 5 A are used for the detection and further processing of high currents. Price strength and high safety are among the main features of these transformers.

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Moulded case current transformers class 1 ... / 5 A

The safe and versatile moulded case current transformers class 1 ... / 5 A are used for the detection and further processing of high currents. Price strength and high safety are among the main features of these transformers.

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Moulded case current transformer for billing purposes, class 0.5 (… / 5 A)

Moulded case current transformer for billing purposes can be used to meet the current regulations for kWh meters. The transformation ratio ranges from 50/5 A to 2500/5 A.

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Moulded case current transformer for billing purposes, class 0,2S (2023)

Moulded case current transformer for billing purposes, class 0,2S can be used to meet the applicable regulations for kWh meters. The transformation ratio ranges from 150/5 A to 1000/5 A.

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Summation current transformer for plug-on and split transformers

Summation current transformers can sum up the secondary currents of several main transformers. This makes it possible to measure the total consumption with only one measuring instrument. Measurements can be made with an accuracy class of 0.5 and 1.

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Summation current transformer for core current transformers

Summation current transformers for cable transformers can add up secondary currents. This allows the total consumption to be recorded with only one measuring instrument. The accuracy class is 1.

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Cable split core for retrofitting existing systems Type KUW

The cable split core for retrofitting existing systems Type KUW can be integrated into existing installations. They are compact and divisible and are suitable for energy and voltage quality measuring devices. The special advantage lies in the fast assembly.

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Cable split core current transformer <br> Type KBU

Cable split core current transformer
Type KBU

The current transformer can be split at the push of a button and retrofitted into existing systems. Safety is a particular advantage of the divisible current transformer - it audibly locks into place when attached.

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Three-phase current transformer

The cost-effective three-phase current transformer is not only space-saving, but also easy to install. Thanks to its compact design, the transformer can be mounted so easily on the DIN rail.

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DIN rail current transformer

The DIN rail current transformer with voltage tap and back-up fuse is space-saving and easy to mount on the rail terminal. The transformer measures with an accuracy class of 0.5 and 1 and has a high short-circuit capability (70 kA to 400 V / 50 Hz).

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Compact current transformer for operating current

The compact current transformer detects operating current. The transformers of the series can be plugged together (lego transformer). Advantage: simple and space-saving mounting directly above the circuit breaker.

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Compact current transformer for operating and residual current

The compact current transformer records operating and differential current. Transformers of this series can be plugged together (lego transformer). Advantage: simple and space-saving mounting directly above the circuit breaker.

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Rogowski coils

The Rogowski coil measures AC current from busbars and power lines. The main features of the coil are reliability and safety: they are more robust than electromagnetic devices and can be safely installed and operated.

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Passive Rogowski coils

The Rogowski coil is used for current measurement and is primarily used for retrofitting in existing systems - optionally on busbars or large cable cross-sections.

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Low-power transformer

The compact low-power current transformers are used to measure currents of up to several kA (depending on the version).

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Split core for operating current

The split core for operating current are used with the UMG 20CM and serve to record operating currents. The split core for operating current up to a maximum of 63 A can be integrated into existing systems without great effort.

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Split core for operating current up to 600 A

The main feature of the Split core for operating current up to 600 A is the quick mounting and the reliability during measurement. This folding transformer is used together with the UMG 20CM and measures according to the accuracy classes 0.5 and 1.

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Split core for operating and residual currents

Split core for operating and residual currents are compact in their design and serve the acquisition of high measuring accuracy. They are especially suitable for use with the UMG 20CM.

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6-fold DIN rail current transformer

The 6-fold DIN rail current transformer has 6 measuring channels, which are individually adjustable for operating or differential current. This current transformer is suitable for the UMG 20CM measuring device and can be mounted on the DIN rail.

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Feadthrough residual current transformer

The feadthrough residual current transformer detects very small currents. In conjunction with the UMG measuring devices, this can determine the differential current to earth of machines or systems.

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Split-core residual current transformer <br> type KBU

Split-core residual current transformer
type KBU

The split-core residual current transformer KBU can be mounted easily and cost-effectively. It is available in various dimensions and can avoid operational interruptions.

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Split differential current transformers <br> type CT-AC

Split differential current transformers
type CT-AC

This transformer type detects very small currents and can be retrofitted. In conjunction with the UMG measuring devices, the differential current to earth of machines or systems (e.g. insulation faults) can be determined.

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Residual current transformer <br> type A

Residual current transformer
type A

For differential current detection in 3-/4-wire AC networks with highly sensitive current sensor for detecting even the smallest fault currents.

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Differential current transformer <br> type B+

Differential current transformer
type B+

Der intelligente und stets wachsame Wandler überwacht kontinuierlich DC-Fehlerströmen des Typs B+ (bis 300 mA). Ziel ist die Reduzierung der DGUV V3 (Ersatz zur Isolationsmessung in ortsfesten elektrischen Anlagen).

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Low-power current transformers, class 0.5... / 0.1 A

World's first current transformer with screwless connection technology - spring-loaded terminal block

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Current Transformer Accessories

Here you can find our current transformer accessories.

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The link between heavy current and measurement technology

Moulded Case Current Transformers class 0,5 ... / 5 A

Moulded case current transformers class 1 ... / 5 A

Moulded case current transformer for billing purposes, class 0.5 (… / 5 A)

Moulded case current transformer for billing purposes, class 0,2S (2023)

Summation current transformer for plug-on and split transformers

Summation current transformer for core current transformers

Cable split core for retrofitting existing systems Type KUW