current transformers

Shop Current Transformers

Accurate current measurement is essential for effective electrical system monitoring and protection. At Blackhawk Supply, we stock a comprehensive range of current transformers (CTs) engineered to step down high electrical currents into manageable signals for metering, protective relaying and control applications.

From split core current transformers that install without circuit interruption to solid core models delivering precision measurement, our CT inventory supports the diverse requirements of industrial facilities, commercial buildings and renewable energy installations.

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AC Current Transformers

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Split Core Current Transformers

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Dwyer APT-40-1DN AC power transformer | 120 VAC input | 24 VAC isolated output | 40 VA | dual hub | Blackhawk Supply

APT-40-1DN | AC power transformer | 120 VAC input | 24 VAC isolated output | 40 VA | dual hub | Dwyer

Brand: Dwyer

SKU: APT-40-1DN

CR Magnetics CR8320-1600-A NanoCrystalline Amorphous Vertical PCB Current Transformer | Solid Core | 1600 Turns | 3.0 Vmax RMS | 10 Arms Maximum Input Current Range | 0.22" ID | Blackhawk Supply

CR8320-1600-A | NanoCrystalline Amorphous Vertical PCB Current Transformer | Solid Core | 1600 Turns | 3.0 Vmax RMS | 10 Arms Maximum Input Current Range | 0.22" ID | CR Magnetics

Brand: CR Magnetics

SKU: CR8320-1600-A

Dwyer CCT40-202 Solid core Selectable 10/20/50 A Range, Self-powered, 0-5 V | Blackhawk Supply

CCT40-202 | Solid core Selectable 10 / 20 / 50 A Range, Self-powered, 0-5 V | Dwyer

Brand: Dwyer

SKU: CCT40-202

Dwyer CCT40-102 Split core Selectable 10/20/50 A Range, Self-powered, 0-5 V | Blackhawk Supply

CCT40-102 | Split core Selectable 10 / 20 / 50 A Range, Self-powered, 0-5 V | Dwyer

Brand: Dwyer

SKU: CCT40-102

Dwyer CCT50-200 Solid core Selectable 100/150/200 A Range, 15-42 VDC, loop powered, 4-20 mA | Blackhawk Supply

CCT50-200 | Solid core Selectable 100 / 150 / 200 A Range, 15-42 VDC, loop powered, 4-20 mA | Dwyer

Brand: Dwyer

SKU: CCT50-200

Dwyer APT-50-1SB AC power transformer | 120 VAC input | 24 VAC isolated output | 50 VA single hub | w/ circuit breaker | Blackhawk Supply

APT-50-1SB | AC power transformer | 120 VAC input | 24 VAC isolated output | 50 VA single hub | w / circuit breaker | Dwyer

Brand: Dwyer

SKU: APT-50-1SB

Dwyer APT-75-5SB Series APT AC Power Transformers 75 VA, 120/208/240/277/480 VAC input voltage, Button circuit breaker | Blackhawk Supply

APT-75-5SB | Series APT AC Power Transformers 75 VA, 120 / 208 / 240 / 277 / 480 VAC input voltage, Button circuit breaker | Dwyer

Brand: Dwyer

SKU: APT-75-5SB

CR Magnetics CR8350-1000-A NanoCrystalline Amorphous Vertical PCB Current Transformer | Solid Core | 1000 Turns | 13.0 Vmax RMS | 100 Arms Maximum Input Current Range | 0.50" ID | Blackhawk Supply

CR8350-1000-A | NanoCrystalline Amorphous Vertical PCB Current Transformer | Solid Core | 1000 Turns | 13.0 Vmax RMS | 100 Arms Maximum Input Current Range | 0.50" ID | CR Magnetics

Brand: CR Magnetics

SKU: CR8350-1000-A

CR Magnetics MODEL 18-600 General Purpose Wire Lead Current Transformer | Solid Core | 605 Turns | 5.0 Vmax RMS | 100 Arms Maximum Input Current Range | 0.55" ID | Blackhawk Supply

MODEL 18-600 | General Purpose Wire Lead Current Transformer | Solid Core | 605 Turns | 5.0 Vmax RMS | 100 Arms Maximum Input Current Range | 0.55" ID | CR Magnetics

Brand: CR Magnetics

SKU: MODEL 18-600

CR Magnetics CR8401-1000-G Ground Fault Wire Lead Current Transformer | Solid Core | 1000 Turns | 0.6 Vmax RMS | 4.0 Arms Maximum Input Current Range | 0.275" ID | Blackhawk Supply

CR8401-1000-G | Ground Fault Wire Lead Current Transformer | Solid Core | 1000 Turns | 0.6 Vmax RMS | 4.0 Arms Maximum Input Current Range | 0.275" ID | CR Magnetics

Brand: CR Magnetics

SKU: CR8401-1000-G

CR Magnetics CR5SFT-101 AC Current Transformer | Commerical Grade | Mounting Case | (2) Terminals #8-32 | 0 - 100 AAC Input Range | 0 - 5AAC Output Range | 1.56" ID | Blackhawk Supply

CR5SFT-101 | AC Current Transformer | Commerical Grade | Mounting Case | (2) Terminals #8-32 | 0 - 100 AAC Input Range | 0 - 5AAC Output Range | 1.56" ID | CR Magnetics

Brand: CR Magnetics

SKU: CR5SFT-101

CR Magnetics CR5ASFT-251 AC Current Transformer | ANSI Metering Class | Mounting Case | (2) Terminals #8-32 | 0 - 250 AAC Input Range | 0 - 5AAC Output Range | 1.56" ID | Blackhawk Supply

CR5ASFT-251 | AC Current Transformer | ANSI Metering Class | Mounting Case | (2) Terminals #8-32 | 0 - 250 AAC Input Range | 0 - 5AAC Output Range | 1.56" ID | CR Magnetics

Brand: CR Magnetics

SKU: CR5ASFT-251

Functional Devices CT-100A4-333 Current Transformer, Split Core, 333mV Output, 100 Amp, Wire Leads | Blackhawk Supply

CT-100A4-333 | Current Transformer, Split Core, 333mV Output, 100 Amp, Wire Leads | Functional Devices

Brand: Functional Devices

SKU: CT-100A4-333

Functional Devices CT-200A4-333 Current Transformer, Split Core, 333mV Output, 200 Amp, Wire Leads | Blackhawk Supply

CT-200A4-333 | Current Transformer, Split Core, 333mV Output, 200 Amp, Wire Leads | Functional Devices

Brand: Functional Devices

SKU: CT-200A4-333

Functional Devices CT-100A2-333 Enclosed Split-Core Current Transformer, 100Amp, 333mV output | Blackhawk Supply

CT-100A2-333 | Enclosed Split-Core Current Transformer, 100Amp, 333mV output | Functional Devices

Brand: Functional Devices

SKU: CT-100A2-333

ACI RCT24-5000 24" Rogowski Coil, 25 to 6000A, 7.01" Window, 333 mV Output, 6.5 ft Leads | Blackhawk Supply

RCT24-5000 | 24" Rogowski Coil, 25 to 6000A, 7.01" Window, 333 mV Output, 6.5 ft Leads | ACI

Brand: ACI

SKU: RCT24-5000

ACI RCT16-2500 16" Rogowski Coil, 12.5 to 3000A, 4.17" Window, 333 mV Output, 6.5 ft Leads | Blackhawk Supply

RCT16-2500 | 16" Rogowski Coil, 12.5 to 3000A, 4.17" Window, 333 mV Output, 6.5 ft Leads | ACI

Brand: ACI

SKU: RCT16-2500

ACI AcuCT-H040-60:333 Current Transformer, 60A, Hinged Split Core, 0.4" Aperture, 333mV Output, 2.5m Leads | Blackhawk Supply

AcuCT-H040-60:333 | Current Transformer, 60A, Hinged Split Core, 0.4" Aperture, 333mV Output, 2.5m Leads | ACI

Brand: ACI

SKU: AcuCT-H040-60:333

ACI AcuCT-H100-200:333 Current Transformer, 200A, Hinged Split Core, 1.0" Aperture, 333mV Output, 2.5m Leads | Blackhawk Supply

AcuCT-H100-200:333 | Current Transformer, 200A, Hinged Split Core, 1.0" Aperture, 333mV Output, 2.5m Leads | ACI

Brand: ACI

SKU: AcuCT-H100-200:333

ACI AcuCT-H040-30:333 Current Transformer, 30A, Hinged Split Core, 0.4" Aperture, 333mV Output, 2.5m Leads | Blackhawk Supply

AcuCT-H040-30:333 | Current Transformer, 30A, Hinged Split Core, 0.4" Aperture, 333mV Output, 2.5m Leads | ACI

Brand: ACI

SKU: AcuCT-H040-30:333

ACI AcuCT-125-400-333 Current Transformer, 400A, Split Core, 1.25" Aperture, 333mV Output, 2.5m Leads | Blackhawk Supply

AcuCT-125-400-333 | Current Transformer, 400A, Split Core, 1.25" Aperture, 333mV Output, 2.5m Leads | ACI

Brand: ACI

SKU: AcuCT-125-400-333

ACI AcuCT-125R-300-333 Current Transformer, 300A, High Accuracy, Split Core, 1.25" Aperture, 333mV Output, 2.5m Leads | Blackhawk Supply

AcuCT-125R-300-333 | Current Transformer, 300A, High Accuracy, Split Core, 1.25" Aperture, 333mV Output, 2.5m Leads | ACI

Brand: ACI

SKU: AcuCT-125R-300-333

Veris H6812-2400A-5A CT | SplitCore | Instrument Grade | 5.5in x 2.5in ID | 2400A to 5A | Blackhawk Supply

H6812-2400A-5A | CT | SplitCore | Instrument Grade | 5.5in x 2.5in ID | 2400A to 5A | Veris (OBSOLETE)

Brand: Veris

SKU: H6812-2400A-5A

Veris H6811-600A-5A CT | Split Core | Instrument Grade | 2.9in x 2.5in ID | 600A to 5A | Blackhawk Supply

H6811-600A-5A | CT | Split Core | Instrument Grade | 2.9in x 2.5in ID | 600A to 5A | Veris (OBSOLETE)

Brand: Veris

SKU: H6811-600A-5A

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