About Current Transformers

Triad Current Transformers

A Current Transformer (CT) is a device designed to reduce an alternating current (AC) to a much lower, safer level. It is usually found in electric power systems for metering and/or protective relaying purposes. They are used to measure the level of current flowing through circuits and in most cases are connected to a meter or other monitoring device. The current transformer uses the concepts of electrical transformer to transform current levels between the primary (higher current) and secondary (lower current) windings. A typical current transformer is a wire wound toroidal core transformer, with a single primary winding, connected in series with the load, and a multiple secondary windings designed to provide an output current proportional to the current flowing through the primary.

Current Transformers

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(Ex. GST)(▲▼)		Enter Qty Mounting StyleInductanceCurrent RatingTurns RatioSecondary ResistanceTermination StyleLengthWidthHeightFrequencyFrequency RangeQualification
  
                
CST206-2A


Current Transformers CURRENT SENSE 56.0mH 200T ENCAP TORIOD/CST206-2A
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Triad 468
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USD 4.8904
Multiples of: 1

Through_Hole56 mH80 A200:13.5 OhmsRadial1.075 in0.4 in1.225 in 20 KHz to 250 KHz 
CST206-3A


Current Transformers 70mH 130A SENSING
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Triad 455
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USD 4.8904
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Through_Hole130 mH70 A300:112.4 OhmsRadial27.3 mm10.16 mm31.11 mm20 KHz to 250 KHz20 KHz to 250 KHz 
CST206-1A-B


Current Transformers CURRENT SENSE 14.0mH 100T ENCAP TORIOD/C
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Triad 358
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USD 4.9481
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Through Hole14 mH  580 mOhms 27.3 mm10.16 mm31.12 mm 20 KHz to 200 KHz 
CSE184L


Current Transformers CSE184L - LOW FREQUENCY CURRENT SENSE TRANSFORMER .05 to 1 AMP @ 50 to 400Hz
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Triad 249
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USD 2.119
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Through_Hole-1 A1:16.6723 OhmsRadial24 mm21.5 mm18 mm 50 Hz to 400 Hz 
CST206-1T


Current Transformers CURRENT SENSE 14.0mH 100Tct ENCAP TORIOD/CST206-1T
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Triad 203
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USD 4.6851
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Through_Hole14 mH110 A100Ct58 mOhmsRadial17.53 mm9.78 mm23.24 mm 20 KHz to 250 KHz 
CSE187L-P


Current Transformers 1:500ratio 110mV Potted Coil
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Triad 201
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USD 3.1153
Multiples of: 1

Through Hole 30 A1:50021 OhmsRadial0.85 in0.85 in0.71 in 50 Hz to 400 Hz 
CST25-0100


Current Transformers PCB Curr Sense Xfmr 1:100,50-500KHz
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Triad 193
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USD 1.6275
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Through Hole18 mH25 A1:1002 OhmsSolder Pin17 mm15 mm11.8 mm 50 KHz to 500 KHz 
CST306-1A


Current Transformers CURRENT SENSE 3.5mH 50T ENCAP TORIOD/CST306-1A
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Triad 173
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USD 3.8037
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Through_Hole3.5 mH35 A50:1340 mOhmsRadial17.53 mm9.78 mm23.24 mm 20 KHz to 200 KHz 
CST-1015


Current Transformers CURRENT SENSE TRANSFORMER, PRIMARY CURRENT: 15 AMPS
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Triad 172
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USD 5.5183
Multiples of: 1

Through_Hole 15 A1000:140 OhmsRadial23.5 mm12 mm24.8 mm 50 Hz / 60 Hz 
CST306-3T


Current Transformers 55mH 25A SENSING CENTER TAPPED
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Triad 147
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USD 3.8037
Multiples of: 1

Through_Hole55 mH25 A200Ct3.75 OhmsRadial27.3 mm10.16 mm31.11 mm20 KHz to 200 KHz  
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