Current Transformers

Current transformers or (CT’s) are instruments that are used to transform the current from a high current into a lower current so that the power can then be used for measuring and controlling. The transformers consist of a core, a primary and a secondary winding.RS Components offer an extensive range of highly accurate CT’s in various transformer types, current ratings, CT ratio supply voltages and mounting types to suit every application. Supplied by industry-leading brands including Siemens, Murata Power Solutions LEM and of course RS PRO.

How does a current transformer work?

When an alternating current flows through the primary winding, a magnetic flux is created which then induces an alternating current in the secondary winding. This alternating current is proportional to the current in its primary. Current transformers are also known as a "step-down transformers". Once the current has been reduced it can be safely monitored and measured using an ammeter.

Types of current transformer

Toroidal Current Transformer - These transformers are shaped like a doughnut they do not contain a primary winding. Instead, the line that carries the current flowing in the network is threaded through a window or hole in the toroidal transformer. Toroidal transformers offer high efficiency with minimal excess noise and little excess leakage inductance.Wound Current Transformer The transformers primary winding is physically connected in series with the conductor that carries the measured current flowing in the circuit. The magnitude of the secondary current is dependent on the turns ratio of the transformer.Bar-type Current Transformer – This type of current transformer uses the actual cable or bus-bar of the main circuit as the primary winding, which is equivalent to a single turn. They are fully insulated from the high operating voltage of the system and are usually bolted to the current-carrying device.

Where would I use a current transformer?

CT's are used in a wide range of industrial and commercial measurement applications. Some of the most common are:Generating stationsElectrical substationsCommercial electric power distributionElectrical panels


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제품설명 단가 Current Ratio Bore Size Transformer Type Sensor Technology Supply Voltage Input Current Output Current Overall Height Minimum Temperature Overall Width Maximum Temperature Overall Depth Dimensions For Use With
RS 제품 번호 668-4067
제조사 부품 번호CT105F250/5-2.5/1
제조사HOBUT
₩60,865.40
Each
수량
250:5 21mm Base Mounted - - - - 79mm -30°C 105mm +80°C 53mm - -
RS 제품 번호 331-339
제조사 부품 번호CT132M100/5-2.5/1
제조사HOBUT
₩20,363.90
Each
수량
100:5 21mm DIN Rail Mounted - - 100A 5 A 65mm -30°C 45mm +85°C 30mm - -
RS 제품 번호 533-0621
제조사 부품 번호CTSCEN200<1000/5
제조사HOBUT
₩116,631.30
Each
수량
200:5, 400:5, 600:5, 800:5, 1000:5 - Clip Fit - - - - 125mm -30°C 132mm +80°C 38mm - -
RS 제품 번호 331-519
제조사 부품 번호CT143M100/5-2.5/1-001
제조사HOBUT
₩21,010.25
Each
수량
100:5 24mm DIN Rail Mounted - - 100A 5 A 70mm -30°C 49mm +85°C 45mm - -
RS 제품 번호 668-4064
제조사 부품 번호CT105F200/5-2.5/1
제조사HOBUT
₩56,472.70
Each
수량
200:5 21mm Base Mounted - - - - 79mm -30°C 105mm +80°C 53mm - -
RS 제품 번호 668-4055
제조사 부품 번호CT105F150/5-2.5/1
제조사HOBUT
₩57,123.70
Each
수량
150:5 21mm Base Mounted - - - - 79mm -30°C 105mm +80°C 53mm - -
RS 제품 번호 914-5294
제조사 부품 번호CTSCMWH60/0.333V
제조사HOBUT
₩30,459.05
Each
수량
60:1 10mm Split Core - - 60A 333 mV - -15°C - +50°C - 28.7 x 26.4 x 41.7 mm Multi Function Meter
RS 제품 번호 418-3604
제조사 부품 번호CTSCEN100<400/5
제조사HOBUT
₩106,551.65
Each
수량
100:5, 200:5, 300:5, 400:5 - Clip Fit - - - - 113mm -30°C 127mm +80°C 40mm - -
RS 제품 번호 533-0643
제조사 부품 번호CTSCM40-200/5
제조사HOBUT
₩68,699.10
Each
수량
200:5 - Clip Fit - - - - 104.5mm -30°C 116mm +80°C 35.5mm - -
RS 제품 번호 331-575
제조사 부품 번호CTSCM40500/5-5/1
제조사HOBUT
₩65,498.35
Each
수량
500:5 - Clip Fit - - 500A 5 A 116mm -30°C 104.5mm +80°C 35.5mm - -
RS 제품 번호 331-604
제조사 부품 번호CTSCM40400/5-5/1
제조사HOBUT
₩69,201.30
Each
수량
400:5 - Clip Fit - - 400A 5 A 116mm -30°C 104.5mm +80°C 35.5mm - -
RS 제품 번호 331-581
제조사 부품 번호CTSCM40300/5-2.5/1
제조사HOBUT
₩63,238.45
Each
수량
300:5 - Clip Fit - - 300A 5 A 116mm -30°C 104.5mm +80°C 35.5mm - -
RS 제품 번호 914-5301
제조사 부품 번호CTSCMWH500/0.333V
제조사HOBUT
₩57,123.70
Each
수량
500:1 35mm Split Core - - 500A 333 mV - -15°C - +50°C - 51.2 x 51.2 x 83.5 mm Multi Function Meter
RS 제품 번호 313-801
제조사 부품 번호CT174M500/5-2.5/1-001
제조사HOBUT
₩23,845.20
Each
수량
500:5 40mm Base Mounted - - 500A 5 A 95mm -30°C 70mm +85°C 55mm - -
RS 제품 번호 287-3210
제조사 부품 번호CT153M300/5-2.5/1
제조사HOBUT
₩21,379.15
Each
수량
300:5 26mm Straight Through - - - - 75mm -20°C 54.5mm +70°C 68mm - -
RS 제품 번호 257-830
제조사 부품 번호CT173M400/5-2.5/1-002
제조사HOBUT
₩21,949.55
Each
수량
400:5 40mm Base Mounted - - 400A 5 A 95mm -30°C 70mm +85°C 55mm - -
RS 제품 번호 313-823
제조사 부품 번호CT174M800/5-2.5/1-001
제조사HOBUT
₩25,844.70
Each
수량
800:5 40mm Base Mounted - - 800A 5 A 95mm -30°C 70mm +85°C 55mm - -
RS 제품 번호 331-553
제조사 부품 번호CT143M200/5-2.5/1-001
제조사HOBUT
₩23,722.75
Each
수량
200:5 24mm DIN Rail Mounted - - 200A 5 A 70mm -30°C 49mm +85°C 45mm - -
RS 제품 번호 313-817
제조사 부품 번호CT174M600/5-2.5/1-001
제조사HOBUT
₩24,426.45
Each
수량
600:5 - Base Mounted - - - - 95mm -30°C 70mm +85°C 55mm - -
RS 제품 번호 331-480
제조사 부품 번호CTSCM40600/5-5/1
제조사HOBUT
₩65,498.35
Each
수량
600:5 - Clip Fit - - 600A 5 A 104.5mm -30°C 116mm +80°C 35.5mm - -