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Current Transformers

Current transformers, abbreviated as CTs, commonly referred to as core balance current transducers or current transducers, which are equipment designed to mitigate or enhance the current from a high voltage into a lower voltage and back to its original form. This was carried out so that the potential would be handled easily with the help of relays and computing tools, and techniques for electrical circuit operations. A current transformer is comprised of fundamental, important and supplementary winding.

In order to meet the needs of any application, Enrgtech offers a wide selection of extremely accurate Core Balance Current Transducers in a range of transformer types, current ratings, CT ratio supply voltages, and mounting options. Provided by top-tier companies in the market, such as Siemens, Murata Power Solutions LEM, and so on.

How Does a Current Transformer Function?

A magnetic flux is produced when an alternating current passes through the primary winding, and this flux generates an alternating current in the secondary winding. The ratio of this alternating current to its primary current is one. Step-down transformers are another name for current transducers. Once the current has been lowered, an ammeter can be used to measure and monitor it safely.

What are the Types of Current Transformers?

  • Toroidal Current Transformer - They are structured like a doughnut and do not consist of a major winding. As opposed to the way that undergoes the voltage passing in the grid is threaded with the help of a window or opening in the toroidal transformer. Toroidal transformers provide a highly efficient connection with less excess distortion and leakage inductance to ensure limited access.
  • Wound Current Transformer - The transformer's primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit. The magnitude of the secondary current is dependent on the turn ratio of the transformer.
  • Bar-type Current Transformer - The primary winding, or one turn, of this kind of current transformer, is the actual wire or busbar of the main circuit. They are typically bolted to the current-carrying equipment and are completely insulated from the high operating voltage of the system.

What are Current Transducers used for?

CTs are used in a wide range of industrial and commercial measurement applications. Some of the most common are:

Current transducers are installed in several household, industrial, and commercial applications. These are the most commonly used ones:

  • Producing Stations
  • Electric Substations
  • Industrial Electric
  • Control Distribution
  • Electrical Control panel

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LAX 100-NP, LEM
17 In Stock
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£ 22.08
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HO 8-NP, LEM
8 In Stock
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£ 7.84
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AP 50 B420L, LEM
75 In Stock
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£ 125.75
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CASR 25-NP, LEM
82 In Stock
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£ 10.88
Broyce Control
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BZCT035, Broyce Control
73 In Stock
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£ 31.76
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£ 30.76
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£ 29.46
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HTFS 800-P, LEM
92 In Stock
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£ 20.68
Sifam Tinsley
XS02-315055S 000000, Sifam Tinsley
18 In Stock
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£ 39.80
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£ 38.21
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£ 36.61
Sifam Tinsley
XN45-275031S000000, Sifam Tinsley
4 In Stock
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£ 25.27
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£ 24.25
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£ 23.25
Sifam Tinsley
XN45-325051S000000, Sifam Tinsley
1 In Stock
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£ 25.27
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£ 24.25
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£ 23.25
HXS 20-NP, LEM
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LV 25-600, LEM
1 In Stock
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£ 83.43
LV 100, LEM
2 In Stock
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£ 239.11
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285604 PFR-W-210, Eaton
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£ 835.10
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236982 Z-WFR3-S/A, Eaton
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£ 729.13
Phoenix Contact
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2905882, Phoenix Contact
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£ 37.78
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3VA9877-0NA10, Siemens
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£ 1318.41
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055650, Bourns
118 In Stock
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£ 2.52
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055657, Bourns
118 In Stock
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£ 2.76
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5SV8706-0KK, Siemens
2 In Stock
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£ 703.43
Schneider Electric
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METSECT5DE200, Schneider Electric
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£ 164.99
Schneider Electric
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METSECT5DB100, Schneider Electric
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£ 145.35
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2CCA880101R0001 CMS-101PS 40A, ABB
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£ 71.72
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2CCA880102R0001 CMS-102PS 20A, ABB
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£ 71.72
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DM3TA1500, Lovato
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£ 145.50
Carlo Gavazzi
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CTV8X800A333MV, Carlo Gavazzi
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£ 167.21
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New Items
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RS_171-8787, RS PRO

RS_171-8787, RS PRO

CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting, bus bar mounting and DIN rail mounting Available in 0.2 & 0.2s accuracy class Wire sealable terminal covers
New items
RS_171-8792, RS PRO

RS_171-8792, RS PRO

CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting, bus bar mounting and DIN rail mounting Available in 0.2 & 0.2s accuracy class Wire sealable terminal covers
New items
RS_171-8793, RS PRO

RS_171-8793, RS PRO

RS Pro CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting and bus bar mounting Wire sealable terminal covers Primary current 5A to 7500A Secondary current 1A or 5A Over current limiting factor FS5, FS10, FS15 Rated frequency 50Hz or 60Hz Rated continuous thermal current (standard) 1,2 x in Rated short time thermal current with 60 x in, 1 s (Max 40kA) Rated isolation level 0.72/3 kV or 0.72/4 kV Altitude up to 2000 m Ambient temperature -5°C to + 55°C (0-95% relative humidity,non condensing!) Storage temperature -25°C to + 70°C
New items
RS_171-8858, RS PRO

RS_171-8858, RS PRO

RS PRO Current Transformers The RS PRO current transformer is square type and encapsulated with polycarbonate. These metering CT's feature sealable terminal covers and the current ratio is 20:5. It is a surface mount device. Features and Benefits • Accuracy class 1 • Comprehensive class accuracy • Cost-effective moulded case • Operating temperature ranges between -5°C and 55°C • Wire sealable terminal covers Applications • Commercial electric power distribution • Electrical substations Certifications • IEC - 61010 - 2 • IEC 60044-1/IEC 61869-1 • IP20 rated • UL94V-0
New items
RS_171-8845, RS PRO

RS_171-8845, RS PRO

CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting, bus bar mounting and DIN rail mounting Available in 0.2 & 0.2s accuracy class Wire sealable terminal covers
New items
RS_171-8749, RS PRO

RS_171-8749, RS PRO

RS Pro CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting and bus bar mounting Wire sealable terminal covers Primary current 5A to 7500A Secondary current 1A or 5A Over current limiting factor FS5, FS10, FS15 Rated frequency 50Hz or 60Hz Rated continuous thermal current (standard) 1,2 x in Rated short time thermal current with 60 x in, 1 s (Max 40kA) Rated isolation level 0.72/3 kV or 0.72/4 kV Altitude up to 2000 m Ambient temperature -5°C to + 55°C (0-95% relative humidity,non condensing!) Storage temperature -25°C to + 70°C
New items
RS_171-8850, RS PRO

RS_171-8850, RS PRO

These split core transformers offer a cost effective and efficient method by which the current can be measured without the need to break the conductor, thereby reducing installation and commissioning time. Flame retardant grade enclosure Test voltage 3kV 50Hz 1min. System voltage 720V max. Insulation class: E
New items
RS_171-8831, RS PRO

RS_171-8831, RS PRO

Three phase measuring current transformers suitable for primary ranges from 60A to 630A with 5A secondary. Allowing installations directly next to the moulded case circuit breakers for greater speed of installation and optimisation of space. Applicable to MCCB such as Manufacturers: ABB, Hager, Dorman Smith, Schneider, Terasaki, Merlin Gerlin, Chint, Legrand plus many more.
New items
RS_171-8847, RS PRO

RS_171-8847, RS PRO

These split core transformers offer a cost effective and efficient method by which the current can be measured without the need to break the conductor, thereby reducing installation and commissioning time. Flame retardant grade enclosure Test voltage 3kV 50Hz 1min. System voltage 720V max. Insulation class: E
New items
RS_171-8758, RS PRO

RS_171-8758, RS PRO

CT’s are square type and encapsulated with polycarbonate. These metering CT’s feature sealable terminal covers and a wide range of primary current ratings. Available in various, Bus bar sizes, case widths, and mounting options. Comprehensive class accuracy Cost effective moulded case current transformer Various mounting options including wall mounting, cable mounting, bus bar mounting and DIN rail mounting Available in 0.2 & 0.2s accuracy class Wire sealable terminal covers
New items
CTMAX1000, ABB

CTMAX1000, ABB

ABB CT MAX Current Transformer The CT MAX range of current transformers has been specially designed for easy and safe switchboard installation, testing and maintenance operations thanks to the compact size of the products and their flexible assembly system. These current transformers are designed to be part of metering systems, where they are used to allow indirect measuring of electrical parameters of the network. Compact dimensions for flexible installation DIN rail, cable or busbar installation 5A standard secondary current IP30 protection Current Transformers
New items
DACT 60 600:1 4-polig, GILGEN Muller & Weigert

DACT 60 600:1 4-polig, GILGEN Muller & Weigert

The GILGEN Muller & Weigert series core balance transformers in connection with our earth fault relay -ELR are designed for the detection of residual currents. Pollution degree III Protection class housing IP40
FAQs
We offer free shipping for orders over £200 if delivery is in the UK. All other orders in the UK, shipping from £7.99 depending on the weight and measurement. Mainland Europe shipping charges start from £25. For all other countries shipping charges start from £50 for products like Current Transformers and all others.
You can email us directly at sales@enrgtech.co.uk or via our website for any queries regarding Current Transformers or any other product.
This depends on the Current Transformers individual product and information that can be found on our website.
Yes, we offer special discounts on orders above £200 for Current Transformers and all other products.
UK orders normally take between 2/3 working days. International orders normally take between 3/5 working days for all products including Current Transformers.
Yes. We keep updating our stock frequently and if a product like Current Transformers is not in stock then we will let you know.