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AcuCT A Revenue-Grade Split Core CT Quarter-Right
AcuCT A Revenue-Grade Split Core CT Quarter-Right
AcuCT A Revenue-Grade Split Core CT Quarter-Left
AcuCT A Revenue-Grade Split Core CT Front
AcuCT A Revenue-Grade Split Core CT Top, Quarter-Right
UL Listed
CE Mark
RoHS Compliant

Revenue Grade Split-Core Current Transformer

The AcuCT A is a high-accuracy, split-core current transformer series and consists of six models. Compliant with IEC 61869-2 Class 0.5S, each model features a compact form factor making it ideal for metering billing verification applications. Includes optional zinc-plated mounting brackets for secure installation and corrosion resistance.

  • Revenue grade accuracy: IEC 61869-2 Class 0.5S from 1% - 120% of rated current on select models
  • Current input range: 20A to 5000A (depending on model)
  • Multiple output options: 80mA, 100mA, 250mV, and 333mV (depending on model)
  • Wide frequency for reliable operation from 50Hz to 400Hz
  • Press-open split-core design for quick and simple installation
  • Rated voltage: 600VAC, rated CAT IV, PD3
  • Certifications and compliance: CE, RoHS, UL Listed UL2808, CSA 22.2, IEC 61010-1, and IEC 61869-2

About AcuCT A Series

Select AcuCT A models are compliant to IEC 61869-2 Class 0.5S standard which defines revenue-grade current transformer accuracy within ±0.5% covering a wide operating range, including low-load conditions. By maintaining precise performance down to low current levels, it ensure dependable energy data for metering, billing verification, and power monitoring in real-world, variable-load applications.

AcuCT A Overview

AcuCT A Models

AcuCT-050A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 050A split-core CT model. 20A 80mA, 100mA, 250mV, 333mV 0.2% , 0.5%* Ø 0.51" 2.5 m UL Listed
30A 80mA, 100mA, 250mV, 333mV 0.2% , 0.5%* Ø 0.51" 2.5 m UL Listed
50A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
60A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
80A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
100A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
150A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
AcuCT-050A
AcuCT 050A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
20A 80mA, 100mA, 250mV, 333mV 0.2% , 0.5%* Ø 0.51" 2.5 m UL Listed
30A 80mA, 100mA, 250mV, 333mV 0.2% , 0.5%* Ø 0.51" 2.5 m UL Listed
50A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
60A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
80A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
100A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
150A 80mA, 100mA, 250mV, 333mV IEC 61869-2 Class 0.5S Ø 0.51" 2.5 m UL Listed
AcuCT-075A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 075A split-core CT model. 50A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
75A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
80A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
100A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
125A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
150A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
AcuCT-075A
AcuCT 075A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
50A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
75A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
80A 80mA, 100mA, 333mV 0.5% 0.75" x 0.75" 2.5 m UL Listed
100A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
125A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
150A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 0.75" x 0.75" 2.5 m UL Listed
AcuCT-142A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 142A split-core CT model. 200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
300A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
400A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
AcuCT-142A
AcuCT 142A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
300A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 1.42" × 1.42" 2.5 m UL Listed
400A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 1.42" × 1.42" 2.5 m UL Listed
AcuCT-200A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 200A split-core CT model. 400A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 2.01" × 2.01" 2.5 m UL Listed
500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 2.01" × 2.01" 2.5 m UL Listed
600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
750A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
800A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
AcuCT-200A
AcuCT 200A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
400A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 2.01" × 2.01" 2.5 m UL Listed
500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5 2.01" × 2.01" 2.5 m UL Listed
600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
750A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
800A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 2.01" × 2.01" 2.5 m UL Listed
AcuCT-3337A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 3337A split-core CT model. 600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 3.35" × 3.74" 2.5 m UL Listed
750A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 3.35" × 3.74" 2.5 m UL Listed
800A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
2000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
AcuCT-3337A
AcuCT 3337A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 3.35" × 3.74" 2.5 m UL Listed
750A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 3.35" × 3.74" 2.5 m UL Listed
800A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
2000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 3.35" × 3.74" 2.5 m UL Listed
AcuCT-4153A
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
AcuCT 4153A split-core CT model. 1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
1600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
2000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
2500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
3000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
3500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
4000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
5000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
AcuCT-4153A
AcuCT 4153A split-core CT model.
Input Ratings
Output Ratings
Accuracy
Window Size
Lead Length
Certification
1000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1200A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1250A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S 4.13" x 5.31" 2.5 m UL Listed
1500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
1600A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
2000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
2500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
3000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
3500A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
4000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed
5000A 80mA, 100mA, 333mV IEC 61869-2 Class 0.5S,
IEC 61869-2 Class 0.2*		 4.13" x 5.31" 2.5 m UL Listed

*Note: Accuracy of the current transformer depends on the model configuration.

AcuCT A Accessories

Each AcuCT A model offers an optional zinc-plated mounting kit consisting of four mounting brackets, two mounting screws, and two mounting nuts.

AcuBrac SP5 mounting bracket for current transformers
CT Mounting Brackets
The optional mounting brackets for the AcuCT A are offered in three models - ACUBRAC-SP5, ACUBRAC-SP7, and ACUBRAC-SP8. The zinc-plated bracket provides protection against corrosion and secures the CT installation firmly in place.

AcuCT A FAQ

Are mounting accessories available with AcuCT A?

Yes. Optional mounting kit is available which includes mounting brackets, mounting screws and nuts to secure the installation. The accessories are zinc plated to prevent corrosion.

What is the standard cable lead length provided with the AcuCT A?

The AcuCT A includes a 2.5 m twisted pair lead wires.

What is maximum operating temperature?

The maximum operating temperature range of AcuCT A is -25°C to 70°C (-13°F to 158°F) and can be storage temperature is -40°C to 80°C (-40°F to 176°F).

What do the CAT IV and PD3 rating indicate about AcuCT A?

The AcuCT A Series is rated at 600VAC CAT IV, PD3. CAT IV (Category IV) indicates that it can be used at service entrances or distribution points and withstand transient overvoltage and PD3 (Pollution Degree 3) rating ensures the AcuCT A can be used in environments with conductive pollution to meet the demands of commercial and industrial applications.

What is the significance of AcuCT A being compliant with IEC 61869-2 Class 0.5S?

IEC 61869-2 Class 0.5S standard signifies that the AcuCT A is compliant to ±0.5% accuracy over an extended operating range from 1% to 120% of rated current and is best suited for installations involving revenue grade metering and billing verification.