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Standard Current Transformers

Standard Current Transformers

API Technologies manufactures Commercial off-the-shelf Current Transformers that measure both AC and DC electrical current and can transform current from high to low measurable values. View our table legend for term definitions.

Standard Acuracy Mini CT View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5300-0005 2.0 5 0.4000 400 0.0100 79 1.093 572 2.38 0.019 0.660 0.177 0.795 0.37 0.50 -
5300-0010 2.0 10 0.2000 200 0.0200 83 1.048 608 2.83 0.019 0.660 0.177 0.795 0.37 0.50 -
5300-0020 2.0 20 0.1000 100 0.0400 85 1.027 731 3.70 0.019 0.660 0.177 0.795 0.37 0.50 -
5300-1030 3.0 30 0.1000 100 0.0900 44 1.023 853 4.32 0.040 0.931 0.370 0.990 0.50 0.60 0.30
5300-2050 2.5 50 0.0500 33 0.1890 17 1.015 1510 3.76 0.062 0.931 0.370 0.990 0.72 0.60 0.30
5300-3011 2.5 100 0.0250 15 0.4170 8 1.009 1650 3.88 0.117 1.187 0.500 1.219 0.72 0.80 0.40
Wide Range Mini CT View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5300-0405 0.5 5 0.1000 100 0.0025 84 1.064 281 0.92 0.019 0.660 0.177 0.795 0.37 0.50 -
5300-0410 1.0 10 0.1000 100 0.0100 85 1.050 440 1.85 0.019 0.660 0.177 0.795 0.37 0.50 -
5300-0420 2.0 20 0.1000 100 0.0400 86 1.040 689 3.72 0.019 0.660 0.177 0.795 0.37 0.50 -
Standard Accuracy Economy Series View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5301 0.5 5 0.1000 100 0.0025 42 1.041 237 0.66 0.040 0.931 0.370 0.990 0.47 0.60 0.30
5302 1.0 10 0.1000 100 0.0100 42 1.034 386 1.32 0.040 0.931 0.370 0.990 0.47 0.60 0.30
5303 1.5 15 0.1000 100 0.0230 42 1.030 513 1.99 0.040 0.931 0.370 0.990 0.47 0.60 0.30
5304 2.0 20 0.1000 100 0.0400 42 1.028 628 2.65 0.040 0.931 0.370 0.990 0.47 0.60 0.30
5305 2.5 25 0.1000 100 0.0630 46 1.020 566 3.65 0.088 1.188 0.500 1.188 0.56 0.80 0.40
5306 3.0 30 0.1000 100 0.0900 46 1.018 644 4.38 0.088 1.188 0.500 1.188 0.56 0.80 0.40
5307 4.0 40 0.1000 100 0.1600 46 1.020 914 5.82 0.105 1.375 0.625 1.375 0.56 1.00 0.40
5308 5.0 50 0.1000 100 0.2500 46 1.019 1090 7.28 0.105 1.375 0.625 1.375 0.56 1.00 0.40
5309 6.0 60 0.1000 100 0.3600 24 1.018 1250 7.41 0.129 1.500 0.688 1.500 0.56 1.20 0.40
5310 7.5 75 0.1000 100 0.5700 24 1.016 1520 9.26 0.129 1.500 0.688 1.500 0.56 1.20 0.40
5311 10.0 100 0.1000 100 1.0000 21 1.014 1740 12.00 0.191 1.750 0.750 1.750 0.56 1.40 0.40
5312 15.0 150 0.1000 100 2.2500 11 1.011 1820 16.60 0.442 2.188 0.938 2.188 0.81 1.80 0.50
5313 20.0 200 0.1000 100 4.0000 11 1.009 2340 22.20 0.300 2.188 0.938 2.188 0.81 1.80 0.50
High Accuracy Mini CT View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5326 0.7 4 0.2000 200 0.0025 76 1.030 88 0.97 0.028 0.660 0.177 0.795 0.72 0.50 0.32
5327 0.5 5 0.1000 100 0.0025 49 1.015 183 0.74 0.015 0.660 0.177 0.795 0.37 0.50 -
5328 1.0 5 0.2000 200 0.0050 61 1.013 158 1.31 0.028 0.660 0.177 0.795 0.72 0.50 0.32
5329 0.5 10 0.0500 100 0.0025 213 1.006 74 1.57 0.015 0.660 0.177 0.795 0.37 0.50 -
5330 1.0 10 0.1000 200 0.0050 252 1.009 58 2.26 0.028 0.660 0.177 0.795 0.72 0.50 0.32
High Accuracy Compact Series View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5351 0.5 5 0.1000 100 0.0025 42 1.033 65 0.707 0.055 1.060 0.188 1.060 0.56 0.80 0.40
5352 1.0 10 0.1000 100 0.0100 42 1.019 108 1.41 0.055 1.060 0.188 1.060 0.56 0.80 0.40
5353 1.5 15 0.1000 100 0.0230 45 1.016 143 2.13 0.082 1.250 0.375 1.250 0.56 1.00 0.40
5354 2.0 20 0.1000 100 0.0400 45 1.011 189 2.89 0.082 1.250 0.375 1.250 0.56 1.00 0.40
5355 2.5 25 0.1000 100 0.0630 53 1.009 193 3.83 0.120 1.375 0.500 1.370 0.62 1.00 0.50
5356 3.0 30 0.1000 100 0.0900 53 1.008 249 4.60 0.120 1.375 0.500 1.370 0.62 1.00 0.50
5300-4240 2.0 40 0.1000 100 0.0400 127 1.012 267 4.54 0.120 1.870 1.000 1.870 0.56 1.50 0.50
5300-4250 2.5 50 0.1000 100 0.0630 127 1.010 542 5.65 0.120 1.870 1.000 1.870 0.56 1.50 0.50
Digital Metering CT View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
5381 0.2 60 0.0033 1 0.0400 2.1 1.013 1230 0.62 0.100 1.500 0.688 1.500 0.56 - -
5382 0.2 120 0.0017 1 0.0400 4.5 1.006 520 2.64 0.120 1.500 0.688 1.500 0.56 - -
5383 0.5 100 0.0050 5 0.0500 11 1.008 200 2.14 0.320 2.370 0.770 2.370 0.75 - -
5384 0.5 200 0.0025 5 0.0500 24 1.004 97 2.40 0.390 2.370 0.770 2.370 0.75 - -
5385 0.5 100 0.0050 5 0.0500 17 1.009 450 2.15 0.120 1.870 1.000 1.870 0.56 - -
Flip-Top View Product Page
Part Number VL Ip V/A RL
Ω
Watt RS RCF@10% lex
µARMS
VexVRMS Wt.Lb. L ID (Min) Potted Dimensions
HT W C D
53FT01 1.3 20 0.0667 220 0.0100 120 1.030 20 2.07 0.230 1.750 0.380 1.800 0.85 - -
53FT02 2.5 100 0.0250 25 0.2500 22 1.014 22 4.64 0.350 1.800 0.812 2.300 0.85 - -
LD-50 Load Detector and High Sensitivity Current Transformers View Product Page
VL Volts RL Ohms Is Amps SecDECOhms Sec IndH Accy at 100% Ip Accy at 10% Ip
2.0* 100 0.02* 36 1.1 1.0% 0.3%
Part Number Load Current Ip(A) TurnsRatio Pri IndmH Pri DCROhm
5361 0.05 1000:400 176 15
5362 0.1 1000:200 44 3.7
5363 0.2 1000:100 11 0.93
5364 0.5 1000:40 1.76 0.15
5365 1 1000:20 0.44 0.038
5366 2 1000:10 0.11 0.01
5367 5 1000:4 0.018 0.0025
LD-50 20 1000:1 ** **
* Many customized output voltages and currents are available on special request, at same low price** For LD-50, the one-turn primary is customer suppliedThe terminating reistor is customer supplied
Legend
Ip: Primary current
V/A: Output volts per input amps
RL: Terminating resistor
N: Nominal turns
Rs: Winding resistance
RCF: Ratio Correction Factor - current readings should be multiplied by this factor to compensate for the effect pf transformer loss
Iex and Vex: Excitation current and voltage rated at operating conditions
WT: Net weight in pounds
Unless requestd: The terminating resistor and the one-turn primary are customer supplied
Pin 3: Normally for mechanical support only, will be used for center-topped designs

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