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Continental
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Boulder, CO 80301
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Current Transformers

Split Core Current Transformers

Split core CTs have a removable section, so that they can be installed without interrupting the circuit, and they are available in three opening sizes.

  • 0.333VAC output at rated current
  • Accuracy ±1% from 10% to 130% of rated current
  • No exposed metal
  • Phase angle <2 degrees
  • UL recognized
  • Dimensional drawing
  • Split-Core Datasheet (Acrobat PDF format)
Split Core Current Transformer

Solid Core Current Transformers

Toroidal (solid core) current transformers are more compact and accurate. You must disconnect the measured circuit to install solid core CTs, so they are better suited for new wiring or permanent installation.

  • 0.333VAC output at rated current
  • Accuracy ±1% from 10% to 130% of rated current
  • No exposed metal
  • Phase angle <1 degrees
  • UL recognized
  • Dimensional drawing
  • Solid-Core Datasheet (Acrobat PDF format)
Solid Core Current Transformer

Bus Bar Current Transformers

Bus bar CTs are similar to split core CTs, but are available in a wider range of shapes and sizes. They have a removable section, so that they can be installed without interrupting the circuit.

  • 0.333VAC output at rated current
  • Current ratings from 100A to 3000A.
  • Accuracy ±1% from 5% to 200% of rated current.
  • Phase angle <1.5 degrees
  • ETL recognized
  • Dimensional drawing
  • Bus-Bar Datasheet (Acrobat PDF format)
Bus-Bar Current Transformer

Split Core Current Transformers - Models and Pricing

Price List

List prices for 1-3 piece quantities. Call for pricing on larger quantities. Effective July 1, 2008.

Model I.D. Rated Amps Max. Amps Max. Wire Gauge Price
CTS-0750-yyy 0.75" 51, 151, 30, 50, 70, 100, 150 200 3/0, 300* $42
CTS-1250-yyy 1.25" 70, 100, 150, 200, 250, 300, 400, 600 800 500, 800* $46
CTS-2000-yyy 2.00" 400, 600, 800, 1000, 1200, 1500 2000 1500, 2000* $66

The CT suffix "-yyy" is the rated amps. The "I.D." is the inside diameter of the CT. The "Max. Amps" is the highest continuous current that the CT can handle without being damaged.

The "Max Wire Gauge" is the largest wire gauge that should fit through this size of CT. Wire sizes of 100 or larger are in units of kcmils (formerly MCM), which are used in North America for wire sizes larger than 4/0.

1 Note: the CTS-0750-005 and CTS-0750-015 do not meet the published accuracy specifications. For applications where accuracy is important, we recommend using the CTT-0300-005 or CTT-0300-015 instead.

* These sizes may or may not fit, depending on the insulation thickness.


Solid Core Current Transformers - Models and Pricing

Price List

List prices for 1-3 piece quantities. Call for pricing on larger quantities. Effective July 1, 2008.

Model I.D. Rated Amps Max. Amps Max. Wire Gauge Price
CTT-0300-yyy 0.30" 5, 15, 30 40 10, 4* $31
CTT-0500-yyy 0.50" 15, 30, 50, 60 80 2, 1/0* $31
CTT-0750-yyy 0.75" 30, 50, 70, 100 130 3/0, 300* $31
CTT-1000-yyy 1.00" 50, 70, 100, 150, 200 260 300, 500* $34
CTT-1250-yyy 1.25" 70, 100, 150, 200, 250, 300, 400 520 500, 800* $38

The CT suffix "-yyy" is the rated amps. The "I.D." is the inside diameter of the CT. The "Max. Amps" is the highest continuous current that the CT can handle without being damaged.

The "Max Wire Gauge" is the largest wire gauge that should fit through this size of CT. Wire sizes of 100 or larger are in units of kcmils (formerly MCM), which are used in North America for wire sizes larger than 4/0.

* These sizes may or may not fit, depending on the insulation thickness.


Bus-Bar Current Transformers - Models and Pricing

Price List

List prices for 1-3 piece quantities. Call for pricing on larger quantities. Effective July 1, 2008.

Model Opening Rated Amps Price
CTB-1.5x3.5-0600 1.5" x 3.5" (38.1mm x 88.9mm) 600 $92.50
CTB-4.0x4.0-0800 4.0" x 4.0" (101.6mm x 101.6mm) 800 $92.50
CTB-4.0x4.0-1200 4.0" x 4.0" (101.6mm x 101.6mm) 1200 $92.50
CTB-4.0x4.0-2000 4.0" x 4.0" (101.6mm x 101.6mm) 2000 $117.50
CTB-4.5x4.0-3000 4.5" x 4.0" (114.3mm x 101.6mm) 3000 $125.00

Custom Bus-Bar Current Transformers - Models and Pricing

Price List

Call for pricing Custom items.

Model Opening Rated Amps Price
CTB-(W x L)-Amps Widths from 1.0" to 10.0"
Lengths from 2.5" to 10.0"
100 to 4000 Amps Call