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Current Transformers (CT)

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1718810
RS
RS PRO Current Transformers, 1500A, 5 Aoutput, turns_ratio 1500:5, Base mounted type
Quantity: 3
Ship Date: 7-13 working days
1+ $31.2781
- +
x $31.2781
Ext. Price: $31.27
MOQ: 1
Mult: 1
ACS772ECB-300B-PFF-T
Allegro MicroSystems
Open Loop Current Sensor AC/DC Current 5V Automotive 5-Pin Case CB-PFF Tube
Quantity: 163
Ship Date: 9-13 working days
23+
25+ $4.677
50+ $4.4754
100+ $4.3948
300+ $4.3545
500+ $4.3141
1000+ $4.1932
5000+ $4.1932
- +
x $4.677
Ext. Price: $121.60
MOQ: 26
Mult: 1
SPQ: 1
DK 400 B10
LEM
LEM Current Transformers, DKseries, 400A, turns_ratio 400:1
Quantity: 5
Ship Date: 7-13 working days
1+ $465.8746
6+ $456.5573
- +
x $465.8746
Ext. Price: $465.87
MOQ: 1
Mult: 1
TLI4971A025T5E0001XUMA1
Infineon Technologies
Infineon Current sensor chip, surface mount, 8Pin
Quantity: 829
Ship Date: 3-12 working days
1+ $3.522
10+ $3.522
25+ $3.1557
50+ $3.1557
100+ $3.0994
250+ $3.043
500+ $3.043
1000+ $3.043
- +
x $3.522
Ext. Price: $10.56
MOQ: 3
Mult: 1
CT143M200/5-2.5/1-001
HOBUT
HOBUT Current Transformers, CT143series, 200A, 5 Aoutput, turns_ratio 200:5, DIN
Quantity: 30
Ship Date: 7-13 working days
1+ $27.24
- +
x $27.24
Ext. Price: $27.24
MOQ: 1
Mult: 1
DHR 400 C420
LEM
LEM Current Transformers, DHRseries, 400A, 4 → 20 mA output, turns_ratio 400:1
Quantity: 31
Ship Date: 7-13 working days
1+ $290.8161
5+ $265.8242
10+ $259.1787
- +
x $290.8161
Ext. Price: $290.81
MOQ: 1
Mult: 1
1718839
RS
RS PRO Current Transformers, 2500A, 5 Aoutput, turns_ratio 2500:5, Base mounted type
Quantity: 11
Ship Date: 7-13 working days
1+ $92.606
5+ $69.9938
- +
x $92.606
Ext. Price: $92.60
MOQ: 1
Mult: 1
1718805
RS
RS PRO Current Transformers, 1000A, 5 Aoutput, turns_ratio 1000:5, Base mounted type
Quantity: 26
Ship Date: 7-13 working days
1+ $37.7483
- +
x $37.7483
Ext. Price: $37.74
MOQ: 1
Mult: 1
90.P2.19.000.0
LEM
LEM Current Transformers, LXSRseries, 25A, turns_ratio 25:1
Quantity: 8
Ship Date: 7-13 working days
1+ $18.0415
- +
x $18.0415
Ext. Price: $36.08
MOQ: 2
Mult: 1
XS03-405135S 000000
Sifam Tinsley
Sifam Tinsley Current Transformers, Omega10series, turns_ratio 1200:5, Clamp mounting type
Quantity: 6
Ship Date: 7-13 working days
1+ $89.3359
- +
x $89.3359
Ext. Price: $89.33
MOQ: 1
Mult: 1
B82801B925A200
TDK
1:200 SMD mount
Quantity: 39600
Ship Date: 8-16 working days
900+ $0.991
2700+ $0.9822
- +
x $0.991
Ext. Price: $891.90
MOQ: 900
Mult: 900
SPQ: 900
HO 100-S/SP33-1106
LEM
Current Sensors, 100A, Voltage output, 3.3V;
Quantity: 94
Ship Date: 3-12 working days
1+ $17.4167
10+ $17.1058
25+ $17.1058
50+ $16.7947
100+ $16.7947
500+ $16.7947
1000+ $16.7947
- +
x $17.4167
Ext. Price: $17.41
MOQ: 1
Mult: 1
749252150
WURTH
1MHz
Quantity: 74
Ship Date: 3-12 working days
5+ $3.2557
50+ $3.1975
250+ $3.1394
500+ $3.1394
1000+ $3.1394
2000+ $3.1394
10000+ $3.1394
- +
x $3.2557
Ext. Price: $16.27
MOQ: 5
Mult: 5
HO 150-NP-0100
LEM
375:1 -375A~375A 375:1 PCBinstall,board mount 41.56mm(width)*27.43mm(height)
Quantity: 72
Ship Date: 3-12 working days
1+ $14.8751
10+ $14.6096
25+ $14.6096
50+ $14.3439
100+ $14.3439
500+ $14.3439
1000+ $14.3439
- +
x $14.8751
Ext. Price: $14.87
MOQ: 1
Mult: 1
ECST1V0805-1030-R
EATON
30:1 10A 180μH 50KHz~1MHz SMD SMD mount 8.38mm*8mm*5.5mm
Quantity: 997
Ship Date: 6-13 working days
1+ $3.795
10+ $3.388
100+ $3.0456
250+ $2.8188
500+ $2.646
1000+ $2.436
2000+ $1.449
5000+ $1.428
- +
x $3.795
Ext. Price: $3.79
MOQ: 1
Mult: 1
SPQ: 1
ECSTA1V0504-1125-R
EATON
125:1 7A 1.28mH 50KHz~1MHz SMD mount 4.8mm*3.65mm*3.55mm
Quantity: 1985
Ship Date: 6-13 working days
1+ $7.958
10+ $7.073
250+ $6.531
500+ $6.3735
1000+ $6.2895
2000+ $4.116
- +
x $7.958
Ext. Price: $7.95
MOQ: 1
Mult: 1
SPQ: 1
855-5001/1000-000
WAGO
1000:1 1KA 50Hz~60Hz 1000:1 wire mounting,base mount 66.2mm*66mm*97mm
Quantity: 200000
Ship Date: 4-12 weeks
20+
1+ $357.3816
5+ $336.7631
10+ $323.292
- +
x $357.3816
Ext. Price: $357.38
MOQ: 1
Mult: 1
SPQ: 1
855-4005/250-100
WAGO
250:5 250A 50Hz~60Hz 250:5 wire mounting,base mount 57.2mm*49mm*67mm
Quantity: 200000
Ship Date: 4-12 weeks
20+
1+ $283.4836
5+ $267.1274
10+ $256.4423
- +
x $283.4836
Ext. Price: $283.48
MOQ: 1
Mult: 1
SPQ: 1
FC-SCT5.0-1:125
FC
0.128472222 20A 3mH SMD SMD mount 7.3mm(length)*5.45mm(height)
Quantity: 1000
In Stock
24+
1+ $0.6565
10+ $0.5214
30+ $0.4672
100+ $0.3878
300+ $0.3804
1000+ $0.3693
- +
x $0.6565
Ext. Price: $0.65
MOQ: 1
Mult: 1
SPQ: 1000
055663-000
BOURNS
4.16736111111111A 4.16736111111111A
Quantity: 115
Ship Date: 7-13 working days
1+ $8.8865
5+ $7.9288
10+ $6.8543
20+ $4.5625
50+ $4.0651
- +
x $8.8865
Ext. Price: $35.54
MOQ: 4
Mult: 1
AX-1500
talema
15A 50Hz~60Hz 1500:1 Plugins Through hole mounting 17.2mm*9.53mm*20.4mm
Quantity: 1480
Ship Date: 14-18 working days
5+ $5.7013
25+ $4.5191
100+ $3.722
200+ $3.4955
- +
x $5.7013
Ext. Price: $57.01
MOQ: 10
Mult: 5
SPQ: 5
192T0523
SOCOMEC
15:5 71mm(width)*85.5mm(height)
Quantity: 1
Ship Date: 5-10 working days
1+ $67.8953
- +
x $67.8953
Ext. Price: $67.89
MOQ: 1
Mult: 1
XN45-335051S000000
Sifam Tinsley
Sifam Tinsley Current Transformers, Omegaseries, 600A, 5 Aoutput, turns_ratio 600:5, Base mounted type, Used forMCCB
Quantity: 1
Ship Date: 5-10 working days
1+ $33.4839
- +
x $33.4839
Ext. Price: $33.48
MOQ: 1
Mult: 1
90.N4.48.000.0
LEM
LEM Current Transformers, HOYSseries, 400A, turns_ratio 400:1, Base mounted type
Quantity: 19
Ship Date: 7-13 working days
1+ $54.1297
- +
x $54.1297
Ext. Price: $54.12
MOQ: 1
Mult: 1
AC1010
talema
10A 50Hz,60Hz 41.8Ω 1000:1 Through hole mounting 23.8mm*11.12mm*23.8mm
Quantity: 636
Ship Date: 6-12 working days
50+ $4.3335
250+ $4.0756
- +
x $4.3335
Ext. Price: $481.01
MOQ: 111
Mult: 1
SPQ: 1

Current Transformers (CT)

Current Transformers (CTs) are devices used in electrical power systems to convert high alternating current (AC) to a lower, safer level for measurement and protection purposes. They are essential components in power distribution and control systems.

Definition:
A current transformer is an instrument transformer designed to provide a current that is proportional to the current in a primary circuit. It typically consists of a toroidal core with a primary winding and a secondary winding. The primary winding is connected in series with the load, while the secondary winding is connected to the measuring or protective devices.

Function:
1. Measurement: CTs allow for the accurate measurement of current in high-voltage circuits without the need for high-voltage-rated meters or protection relays.
2. Protection: They are used in conjunction with relays to provide overcurrent, short-circuit, and earth-fault protection in power systems.
3. Control: CTs enable the control of power flow in circuits by providing feedback to control systems.

Applications:
1. Power Distribution: In substations and distribution boards to monitor and control the flow of electricity.
2. Metering: For billing purposes in utility companies to measure the amount of electricity consumed by customers.
3. Protection Systems: To detect faults and initiate circuit breakers to prevent damage to the electrical infrastructure.

Selection Criteria:
1. Rated Current: The CT should be rated for the maximum current expected in the primary circuit.
2. Accuracy Class: Depending on the application, CTs are classified by their accuracy (e.g., 0.5, 0.2, 0.1 class).
3. Turns Ratio: The ratio of primary to secondary turns determines the current transformation ratio.
4. Insulation Level: Must be suitable for the voltage level of the primary circuit.
5. Environmental Conditions: CTs must be rated for the environmental conditions they will be exposed to, such as temperature, humidity, and pollution levels.
6. Size and Physical Characteristics: The physical size and shape of the CT must be compatible with the installation location and the equipment it is connected to.

In summary, current transformers are vital for the safe and efficient operation of electrical systems, providing a means to measure, control, and protect against electrical faults in high-current applications. Their selection should be based on the specific requirements of the system they will be used in.
Please refer to the product rule book for details.