Current Transformers

High Specification Line of AC Current Transformers. Custom built in-house, our high accuracy industrial split-core and flexible current transformers are among the industry's highest specification CT and offer exceptional value.

Current Transformer Comparison

AcuCT Flex AcuCT R Series AcuCT 5A Series AcuCT mV Series AcuCT Hinged Series HAB-16555 Series HAK Series Shunt Series AcuCT S77 AcuCT S113
AcuCT Flex Series of Rogowski Current Transformers
AcuCT R Split Core Current Transformer
General Purpose 5A Split Core CT General Purpose 333mV CT Compact Branch Circuit CT General Purpose 5A Split Core CT General Purpose 333mV CT Compact Branch Circuit CT General Purpose 5A Split Core CT General Purpose 333mV CT
High Accuracy Flexible CT Highest Accuracy Split Core CT General Purpose 5A Split Core CT General Purpose 333mV CT Compact Branch Circuit CT General Purpose 5A Split Core CT General Purpose 333mV CT Compact Branch Circuit CT Solid Core CT Solid Core CT
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Location Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Branch Circuits Busbar/ Cable Busbar/ Cable Busbar/ Cable Brach Circuits Panel/ Cable/ Busbar
Form Factor Flexible Rope-Like CT Square/Rectangle Press Open Square/Rectangle Removable Face Rectangle Removable Face Mini CT Hinged Opening Rectangle, removable face Rectangle, removable face Inline installation Round Round
Application High Accuracy; Power Quality; Tenant Metering; Tight Spaces High Accuracy; Power Quality; Tenant Metering General Use 333mV General Use 5A/1A Branch Circuit Monitoring DC metering; Busbar; Cable DC metering; Cable DC metering; Busbar; Cable Revenue Metering, branch circuit monitoring Panel and Switchgear Manufacturing
Input Rated Options 1-50kA 50A, 100A, 150A, 200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A 200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A 100A, 200A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 2000A, 3000A, 5000A 5A, 20A, 30A, 40A, 50A, 60A, 100A, 120A, 150A, 200A, 250A, 400A, 600A 1000A, 2000A, 3000A, 4000A, 5000A 50A, 100A, 200A, 400A, 600A, 1000A 50A, 100A, 200A, 500A, 1000A, 2000A 100A, 200A 200A
Output Rated Options mV 333mV, 5A, 1A, 80mA, 100mA, 200mA 333mV 5A, 1A 333mV 4-20mA, 0-5V 4-20mA, 0-5V 75mV 80mA, 100mA 5A
Measurement Range 50000A 5000A 5000A 5000A 600A 5000A 1000A 2000A 200A 200A
Accuracy 0.50% 0.50% 0.50% 0.50% 0.50% 1% 1% 0.5% 0.15% 1%
Min. Window Size (in) 4.17 0.75 x 0.75 0.75 x 0.75 0.83 x 1.22 0.4 6.50 x 2.17 0.83 n/a 0.78 1.18
Max. Window Size (in) 14.5 5 x 7 3 x 5 3.1 x 6.3 1.38 6.50 x 2.17 1.58 n/a 0.78 1.18
UL Listed UL List Pending UL List Pending
CE
UL Recognized
RoHS
AcuCT Flex Series

High Accurancy Flexible CT

AcuCT Flex Series of Rogowski Current Transformers
RIK 5A

5A Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
RIK mV

333mV Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
RIK 4-20 mA

4-20mA or 0-20mA Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
RIK 0-5V

0-5V / 0-10V Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT Flexible Rope-Like CT Flexible Rope-Like CT Flexible Rope-Like CT Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces High Accurancy Power Quality Tenant Metering Tight Spaces High Accurancy Power Quality Tenant Metering Tight Spaces High Accurancy Power Quality Tenant Metering Tight Spaces High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Option 1-50kA 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A
Output Rated Options mV 0 – 6A RMS (0 – 5A RMS Nominal) 0-333mVac 4-20mAdc, 0-20mAdc 0-5Vdc, 0-10Vdc
Measurement Range 50,000A 2.5A – 60000A 2.5A – 60000A 2.5A – 60000A 2.5A – 60000A
Accuracy 0.5% 1% 1% 1% 1%
Min. Window Size (in) 4.17 4.17 4.17 4.17 4.17
Max. Window Size (in) 14.5 14.5 14.5 14.5 14.5
UL Listed
CE
UL Recognized
RoHS
AcuCT R Series

Highest Accuracy Split Core CT

AcuCT R Split Core Current Transformer
AcuCT 5A Series

General Purpose 5A Split Core CT

General Purpose 5A Split Core CT
AcuCT mV Series

General Purpose 333mV CT

General Purpose 333mV CT
AcuCT Hinged Series

Compact Branch Circuit CT

Compact Branch Circuit CT
Location Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Panel / Device / Circuit / Bus Branch Circuits
Form Factor Square/Rectangle Press Open Square/Rectangle Removable Face Rectangle Removable Face Mini CT Hinged Opening
Application High Accurancy Power Quality Tenant Metering General Use 333mV General Use 5A/1A Branch Circuit Monitoring
Input Rated Options 50A, 100A, 150A, 200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A 200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A 100A, 200A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 2000A, 3000A, 5000A 5A, 20A, 30A, 40A, 50A, 60A, 100A, 120A, 150A, 200A, 250A, 400A, 600A
Output Rated Options 333mV, 5A, 1A, 80mA, 100mA, 200mA 333mV 5A, 1A 333mV
Measurement Range 5,000A 5000A 5000A 600A
Accuracy 0.5% 0.5% 0.5% 0.5%
Min. Window Size (in) 0.75 x 0.75 0.75 x 0.75 0.83 x 1.22 0.4
Max. Window Size (in) 5 x 7 3 x 5 3.1 x 6.3 1.38
UL Listed
CE
UL Recognized
RoHS
HAB-16555
General Purpose 5A Split Core CT
HAK Series
General Purpose 333mV CT
Shunt Series
Compact Branch Circuit CT
Location Busbar, Cable Busbar, Cable Busbar, Cable
Form Factor Rectangle, removable face Rectangle, removable face Inline installation
Application DC metering; Busbar; Cable DC metering; Cable DC metering; Busbar; Cable
Input Rated Options 1000A, 2000A, 3000A, 4000A, 5000A 50A, 100A, 200A, 400A, 600A, 1000A 50A, 100A, 200A, 500A, 1000A, 2000A
Output Rated Options 4-20mA, 0-5V 4-20mA, 0-5V 75mV
Measurement Range 5000A 1000A 2000A
Accuracy 1% 1% 0.5%
Min. Window Size (in) 6.50 x 2.17 0.83 n/a
Max. Window Size (in) 6.50 x 2.17 1.58 n/a
CE
RoHS
AcuCT S77

Solid Core CT

General Purpose 5A Split Core CT
AcuCT S113

Solid Core CT

General Purpose 333mV CT
Location Brach Circuits Panel/Cable/Busbar
Form Factor Round Round
Application Revenue Metering, branch circuit monitoring Panel and Switchgear Manufacturing
Input Rated Options 100A, 200A 200A
Output Rated Options 80mA, 100mA 5A
Measurement Range 200A 200A
Accuracy 0.15% 1%
Min. Window Size (in) 0.78 1.18
Max. Window Size (in) 0.78 1.18
UL Listed UL List Pending UL List Pending
CE
AcuCT Flex Series

High Accurancy Flexible CT

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Options 1-50kA
Output Rated Options mV
Measurement Range 50,000A
Accuracy 0.5%
Min. Window Size (in) 4.17
Max. Window Size (in) 14.5
CE
UL Recognize
RoHS
RIK 5A

5A Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Options 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A
Output Rated Options 0 – 6A RMS (0 – 5A RMS Nominal)
Measurement Range 2.5A – 60000A
Accuracy 1%
Min. Window Size (in) 4.17
Max. Window Size (in) 14.5
UL Listed
CE
RoHS
RIK mV

333mV Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Options 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A
Output Rated Options 0-333mVac
Measurement Range 2.5A – 60000A
Accuracy 1%
Min. Window Size (in) 4.17
Max. Window Size (in) 14.5
UL Listed
CE
RoHS
RIK 4-20 mA

4-20mA or 0-20mA Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Options 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A
Output Rated Options 4-20mAdc, 0-20mAdc
Measurement Range 2.5A – 60000A
Accuracy 1%
Min. Window Size (in) 4.17
Max. Window Size (in) 14.5
UL Listed
CE
RoHS
RIK 0-5V

0-5V / 0-10V Rogowski Integrator Kit

AcuCT Flex Series of Rogowski Current Transformers
Location Panel / Device / Circuit / Bus
Form Factor Flexible Rope-Like CT
Application High Accurancy Power Quality Tenant Metering Tight Spaces
Input Rated Options 500A, 1000A, 2500A, 5000A, 10000A, 25000A and 50000A
Output Rated Options 0-5Vdc, 0-10Vdc
Measurement Range 2.5A – 60000A
Accuracy 1%
Min. Window Size (in) 4.17
Max. Window Size (in) 14.5
UL Listed
CE
RoHS

AcuCT R Series

Highest Accuracy Split Core CT

AcuCT R Split Core Current Transformer

LocationPanel / Device / Circuit / Bus
Form FactorSquare/Rectangle Press Open
ApplicationHigh Accurancy Power Quality Tenant Metering
Input Rated Options50A, 100A, 150A, 200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A
Output Rated Options333mV, 5A, 1A, 80mA, 100mA, 200mA
Measurement Range5,000A
Accuracy0.5%
Min. Window Size (in)0.75 x 0.75
Max. Window Size (in)5 x 7
UL List
CE
RoHS

AcuCT 5A Series

General Purpose 5A Split Core CT

General Purpose 5A Split Core CT

LocationPanel / Device / Circuit / Bus
Form FactorSquare/Rectangle Removable Face
ApplicationGeneral Use 333mV
Input Rated Options200A, 250A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1600A, 2000A, 2500A, 3000A, 4000A, 5000A
Output Rated Options333mV
Measurement Range5000A
Accuracy0.5%
Min. Window Size (in)0.75 x 0.75
Max. Window Size (in)3 x 5
CE
UL Recognize
RoHS

AcuCT mV Series

General Purpose 333mV CT

General Purpose 333mV CT

LocationPanel / Device / Circuit / Bus
Form FactorRectangle Removable Face
ApplicationGeneral Use 5A/1A
Input Rated Options100A, 200A, 300A, 400A, 600A, 800A, 1000A, 1200A, 1500A, 2000A, 3000A, 5000A
Output Rated Options5A, 1A
Measurement Range5000A
Accuracy0.5%
Min. Window Size (in)0.83 x 1.22
Max. Window Size (in)3.1 x 6.3
CE
UL Recognize
RoHS

AcuCT Hinged Series

Compact Branch Circuit CT

Compact Branch Circuit CT

LocationBranch Circuits
Form FactorMini CT Hinged Opening
ApplicationBranch Circuit Monitoring
Input Rated Options5A, 20A, 30A, 40A, 50A, 60A, 100A, 120A, 150A, 200A, 250A, 400A, 600A
Output Rated Options333mV
Measurement Range600A
Accuracy0.5%
Min. Window Size (in)0.4
Max. Window Size (in)1.38
CE
UL Recognize
RoHS

HAB-16555

General Purpose 5A Split Core CT
Location Busbar, Cable
Form Factor Rectangle, removable face
Application DC metering; Busbar; Cable
Input Rated Options 1000A, 2000A, 3000A, 4000A, 5000A
Output Rated Options 4-20mA, 0-5V
Measurement Range 5000A
Accuracy 1%
Min. Window Size (in) 6.50 x 2.17
Max. Window Size (in) 6.50 x 2.17
CE
RoHS

HAK Series

General Purpose 333mV CT
Location Busbar, Cable
Form Factor Rectangle, removable face
Application DC metering; Cable
Input Rated Options 50A, 100A, 200A, 400A, 600A, 1000A
Output Rated Options 4-20mA, 0-5V
Measurement Range 1000A
Accuracy 1%
Min. Window Size (in) 0.83
Max. Window Size (in) 1.58
CE
RoHS

Shunt Series

Compact Branch Circuit CT
Location Busbar, Cable
Form Factor Inline installation
Application DC metering; Busbar; Cable
Input Rated Options 50A, 100A, 200A, 500A, 1000A, 2000A
Output Rated Options 75mV
Measurement Range 2000A
Accuracy 0.5%
Min. Window Size (in) n/a
Max. Window Size (in) n/a
CE
RoHS

AcuCT S77

Solid Core CT

General Purpose 5A Split Core CT

LocationBrach Circuits
Form FactorRound
ApplicationRevenue Metering, branch circuit monitoring
Input Rated Options100A, 200A
Output Rated Options80mA, 100mA
Measurement Range200A
Accuracy0.15%
Min. Window Size (in)0.78
Max. Window Size (in)0.78
UL ListedUL List Pending
CE
RoHS

AcuCT S113

Solid Core CT

General Purpose 333mV CT

LocationPanel/Cable/Busbar
Form FactorRound
ApplicationPanel and Switchgear Manufacturing
Input Rated Options200A
Output Rated Options5A
Measurement Range200A
Accuracy1%
Min. Window Size (in)1.18
Max. Window Size (in)1.18
UL ListedUL List Pending
CE
RoHS