Current transformers from the manufacturer

Current transformers, Rogowski coils and energy meters – made in Römerberg, Germany, available from stock.

View current transformers

Plug-on, split-core cable and busbar current transformers, Rogowski coils and energy meters – developed and manufactured in Römerberg, Germany, available from stock.

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Latest

New products

New
KALO

KALO

Split-core current transformer

New
RALO

RALO

Rogowski coil

CEL-NA-S

CEL-NA-S

Grid and system protection

ALO

ALO

Plug-on current transformer

Series

Our product series

from Tue 27/10

TQ

Current transformer

4 products

from €85.82incl. VAT

from Tue 27/10

TC

Current transformer

1 products

from €79.46incl. VAT

from Fri 30/10

ALO

Current transformer

14 products

from €47.49incl. VAT

from Fri 30/10

ALO-E

Current transformer

13 products

from €105.47incl. VAT

from Fri 30/10

WALO

Current transformer

1 products

from €97.91incl. VAT

on request

BZ

Operating hours meter

14 products

Price on request

All series (30)
from Tue 27/10Sale up to −60 %

DMC

Energy meter

10 products

from €116.03Lowest price in the last 30 days: €232.05incl. VAT

from Tue 27/10Clearance up to −50 %

ECM

Energy meter

7 products

from €104.40incl. VAT

from Tue 27/10Clearance up to −50 %

WECM

Energy meter

8 products

from €61.07Lowest price in the last 30 days: €101.79incl. VAT

Newfrom Mon 09/11

KALO

Current transformer

3 products

from €85.82incl. VAT

from Mon 09/11

WALO-E

Current transformer

1 products

from €160.41incl. VAT

from Mon 23/11

IAP

Current transformer

1 products

from €149.39incl. VAT

from Mon 23/11

IAM

Current transformer

1 products

from €161.99incl. VAT

from Mon 23/11

IAG

Current transformer

1 products

from €179.95incl. VAT

from Mon 23/11

ICM-S

Current transformer

1 products

from €157.03incl. VAT

from Mon 23/11

IER

Current transformer

3 products

from €88.64incl. VAT

from Mon 23/11

IB

Current transformer

1 products

from €56.61incl. VAT

from Mon 23/11

IRM-S

Current transformer

1 products

from €125.24incl. VAT

from Mon 23/11

IER-S

Current transformer

1 products

from €88.64incl. VAT

from Mon 23/11

IBR

Current transformer

1 products

from €79.21incl. VAT

from Mon 23/11

IBG

Current transformer

1 products

from €54.62incl. VAT

from Mon 23/11

IRP-S

Current transformer

1 products

from €106.93incl. VAT

on request

PD-MU

Measuring transducer

1 products

Price on request

on request

PNZ-MU

Measuring transducer

1 products

Price on request

on request

DTVU

Measuring transducer

1 products

Price on request

on request

RALO

Rogowski coil

3 products

Price on request

on request

PW-MU

Measuring transducer

1 products

Price on request

on request

PDR-MU

Measuring transducer

1 products

Price on request

on request

PZ

Measuring transducer

1 products

Price on request

from Mon 23/11

SSR

Current transformer

21 products

from €83.06incl. VAT

Selection guide

Find the right transformer

Transformer finder

A few questions on application, mounting and current – you end up with matching article numbers, price and delivery time.

Start the assistant
Cable cross-section for the burdenWhich cross-section does the measuring cable need so that the rated burden is sufficient? The counterpart to the VA calculator.
Which accuracy class do I need?Permissible current error and phase displacement of the classes to IEC 61869-2 – including partial load, where the differences are largest.
Check short-circuit withstandWill the transformer withstand the fault current of your installation? Converts the rated short-time current to your clearing time.
VA calculatorWhich burden results from lead length, cross-section and the connected instrument? Work it out here.

CELSA Messgeräte

Why CELSA measuring devices?

Current transformers made in Germany

Our current transformers are manufactured in Germany and meet high requirements for accuracy, safety and durability.

Broad range of measuring technology and grid protection

In addition to current transformers, we offer energy meters, digital and analogue measuring instruments, summation current transformers, transducers, hour meters, shunt resistors and the CEL-NA-S grid protection relay – all coordinated with each other.

Practical, application-oriented consultation

We support you in selecting the right devices for your application in power supply and industry.

Range

Product categories

Current transformer
Summation current transformer
Rogowski coil
Clearance up to −60 %
Energy meterfrom €61.07 instead of €101.79incl. VAT
Digital measuring instrument
Operating hours meter
Analog measuring devices
Measuring transducer
Shunts
Sale up to −56 %
Grid protectionfrom €308.21 instead of €619.88incl. VAT

Buy current transformers direct from the manufacturer: plug-on current transformers, calibrated current transformers, split-core current transformers, cable split-core transformers, busbar split-core transformers, summation current transformers and protection current transformers – order online with datasheet. Also 4–20 mA transducers and grid and system protection. Not sure which one fits? Choose a current transformer in 4 steps and connecting a current transformer.

Applications

Typical applications

CELSA measuring instruments are used wherever energy is distributed, measured and monitored.

Utilities & municipal works

Utilities & municipal works

Reliable measurement and protection technology for grids and substations.

Industry & plant engineering

Industry & plant engineering

Measurement and grid protection solutions for industrial power distribution and machinery.

Renewable energy

Renewable energy

Grid protection and metering for PV, CHP, storage as well as wind and hydro power.

FAQ

FAQ about Current Transformers

Which types of current transformers does CELSA offer?
We manufacture plug-on current transformers, wound-primary current transformers, retrofit (split-core) current transformers as well as summation and protection transformers for various accuracy classes.
What should be considered when selecting a current transformer?
Key factors are the transformation ratio (primary and secondary current), the required power (burden in VA) and the accuracy class (e.g. class 0.5 or 0.2s).
Are CELSA current transformers suitable for billing purposes?
Yes, we offer a wide range of current transformers approved for official calibration or conformity-assessed measurements.

Still have questions?

Tell us what you need to measure and we will suggest the right transformer. Usually answered the same working day.

Send an enquiryOr call: +49 6232 66291-0

Go deeper

Fundamentals, selection guides and calculators for current measurement.

To the knowledge base →

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