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0755-82798135Current Sense Transformers
Current Sense Transformers
Current Sense Transformers are magnetic components used to detect, monitor and measure current in electronic and electrical systems. They provide isolation between the primary current path and sensing circuitry, making them suitable for power monitoring, overload detection, feedback control and protection functions. They are widely used in power supplies, motor drives, industrial control equipment, energy meters, inverters, battery systems, communication equipment and embedded applications.
This category includes current transformers, current sensing transformers, AC current sense transformers, PCB current transformers, split-core current transformers and related magnetic sensing components. These products are commonly selected based on current range, turns ratio, frequency range, isolation voltage, accuracy, burden resistance, mounting type, package style and application requirements.
TomatoElec supplies original Current Sense Transformers from recognized manufacturers such as Pulse Electronics, Bourns, Würth Elektronik, TDK, Murata, Triad Magnetics, Coilcraft, Hammond Manufacturing and other major brands. As an in-stock electronic components supplier and independent distributor, TomatoElec provides inventory support, original component sourcing and BOM sourcing services for global customers.
| Photo | Mfr. Part # | Availability | Price | Quantity | Datasheet | Series | Packaging | Product Status | Frequency Range | Type | Current Rating (Amps) | Inductance | ET (Volt-Time) | Turns Ratio - Primary:Secondary | Current Ratio | DC Resistance (DCR) | Ratings | Mounting Type | Size / Dimension | Height - Seated (Max) | Termination Style |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
7492540500CURR SENSE XFMR 1:500 40A SMD |
922 | - |
|
Datasheet |
MID-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 40 A | 135 mH | 1240Vµs | 1:500 | - | 0.28mOhm Primary, 21.2Ohm Secondary | AEC-Q200 | Surface Mount | 0.570" L x 0.524" W (14.48mm x 13.30mm) | 0.413" (10.50mm) | Gull Wing |
|
7492541000CURR SENSE XFMR 1:1000 40A SMD |
861 | - |
|
Datasheet |
MID-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 40 A | 540 mH | 2480Vµs | 1:1000 | - | 0.28mOhm Primary, 87.64Ohm Secondary | AEC-Q200 | Surface Mount | 0.570" L x 0.524" W (14.48mm x 13.30mm) | 0.413" (10.50mm) | Gull Wing |
|
7492540200CURR SENSE XFMR 1:200 40A SMD |
430 | - |
|
Datasheet |
MID-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 40 A | 22.4 mH | 496Vµs | 1:200 | - | 0.28mOhm | AEC-Q200 | Surface Mount | 0.570" L x 0.524" W (14.48mm x 13.30mm) | 0.413" (10.50mm) | Gull Wing |
|
7492540020CURR SENSE XFMR 1:20 40A SMD |
236 | - |
|
Datasheet |
MID-CST | Tape & Reel (TR) | Active | 1MHz | Invasive | 40 A | 224 µH | 49Vµs | 1:20 | - | 0.28mOhm Primary, 33mOhm Secondary | AEC-Q200 | Surface Mount | 0.570" L x 0.524" W (14.48mm x 13.30mm) | 0.413" (10.50mm) | Gull Wing |
|
CT-05CURR SENSE XFMR 500:1 10A TH |
1,051 | - |
|
Datasheet |
CT | Bulk | Active | 50/60Hz | Non-Invasive (Solid Core) | 10 A | - | - | 500:1 | 500:1 | - | - | Through Hole | 0.689" L x 0.689" W (17.50mm x 17.50mm) | 0.394" (10.00mm) | PC Pin |
|
CST306-1TCURR SENSE XFMR 35A T/H |
912 | - |
|
Datasheet |
CST | Bulk | Active | 20kHz ~ 200kHz | Non-Invasive (Solid Core) | 35 A | 3.5 mH | 500VµS | - | 50CT:1 | 340mOhm Max | - | Through Hole | 0.690" L x 0.385" W (17.53mm x 9.78mm) | 0.915" (23.24mm) | PC Pin |
|
|
PE-64488NLCURR SENSE XFMR 20A T/H |
658 | - |
|
Datasheet |
THT | Tray | Active | 20kHz ~ 200kHz | Invasive | 20 A | 80 mH | - | - | 200:1 | 200Ohm Primary, 4.5Ohm Secondary | - | Through Hole | 0.900" L x 0.700" W (22.86mm x 17.78mm) | 0.700" (17.78mm) | PC Pin |
|
B78417A2287A003CURR SENSE XFMR 1:125 SMD |
2,211 | - |
|
Datasheet |
B78417 | Tape & Reel (TR) | Active | 50kHz ~ 250kHz | Invasive | - | 11 mH | - | 1:125 | - | 1.9mOhm Primary, 5.3Ohm Secondary | - | Surface Mount | 0.417" L x 0.480" W (10.60mm x 12.20mm) | 0.433" (11.00mm) | Gull Wing |
|
B78417A2285A003CURR SENSE XFMR 1:50 SMD |
1,924 | - |
|
Datasheet |
B78417 | Tape & Reel (TR) | Active | 50kHz ~ 250kHz | Invasive | - | 1.7 mH | - | 1:50 | - | 1.9mOhm Primary, 2.1Ohm Secondary | - | Surface Mount | 0.417" L x 0.480" W (10.60mm x 12.20mm) | 0.433" (11.00mm) | Gull Wing |
|
CT-1010CURR SENSE XFMR 10A T/H |
1,202 | - |
|
Datasheet |
CT | Tray | Active | 50/60Hz | Non-Invasive (Solid Core) | 10 A | - | - | - | 1000:1 | 41.8Ohm | - | Through Hole | 0.937" L x 0.438" W (23.80mm x 11.12mm) | 0.937" (23.80mm) | PC Pin |
|
CT-1015CURR SENSE XFMR 15A T/H |
427 | - |
|
Datasheet |
CT | Tray | Active | 50/60Hz | Non-Invasive (Solid Core) | 15 A | - | - | - | 1000:1 | 41.8Ohm | - | Through Hole | 0.937" L x 0.438" W (23.80mm x 11.12mm) | 0.937" (23.80mm) | PC Pin |
|
|
CST-1010CURR SENSE XFMR 10A TH |
166 | - |
|
Datasheet |
CST | Bulk | Active | 50/60Hz | Non-Invasive (Solid Core) | 10 A | - | - | - | 1000:1 | 40Ohm | - | Through Hole | 0.925" L x 0.472" W (23.50mm x 12.00mm) | 0.976" (24.80mm) | PC Pin |
|
CST206-3TCURR SENSE XFMR 70A T/H |
180 | - |
|
Datasheet |
CST | Bulk | Active | 20kHz ~ 200kHz | Non-Invasive (Solid Core) | 70 A | 130 mH | 6000VµS | - | 300:1 | 12.4Ohm Max | - | Through Hole | 1.075" L x 0.400" W (27.31mm x 10.16mm) | 1.225" (31.12mm) | PC Pin |
|
CT-06-100CURR SENSE XFMR 1000:1 10A TH |
108 | - |
|
Datasheet |
CT | Bulk | Active | 50/60Hz | Non-Invasive (Solid Core) | 10 A | - | - | 1000:1 | 1000:1 | - | - | Through Hole | 0.709" L x 0.280" W (18.00mm x 7.10mm) | 0.882" (22.40mm) | Wire Leads |
|
|
CST-1030CURR SENSE XFMR 30A T/H |
2,302 | - |
|
Datasheet |
CST | Bulk | Active | 50/60Hz | Non-Invasive (Solid Core) | 30 A | - | - | - | 1000:1 | 46Ohm | - | Through Hole | 1.189" L x 0.563" W (30.20mm x 14.30mm) | 1.189" (30.20mm) | PC Pin |
|
PA3828NLCURR SENSE XFMR 100A |
465 | - |
|
Datasheet |
- | Tray | Active | - | Non-Invasive (Split Core) | 100 A | - | - | - | - | - | - | - | 1.280" L x 1.280" W (32.50mm x 32.50mm) | 0.532" (13.50mm) | - |
|
SPCT 62/40 250/5 A VA 2.5 CL 0.5-CU-ROHSCURR SENSE XFMR 250A DIN RAIL |
676 | - |
|
Datasheet |
SPCT | Box | Active | 50Hz ~ 60Hz | Non-Invasive (Solid Core) | 250 A | - | - | - | 250:5 | - | - | DIN Rail | 2.441" L x 1.811" W (62.00mm x 46.00mm) | 3.169" (80.50mm) | Terminal Block |
|
SPCT 62/40 200/5 A VA 2.5 CL 0.5-CU-ROHSCURR SENSE XFMR 200A DIN RAIL |
147 | - |
|
Datasheet |
SPCT | Box | Active | 50Hz ~ 60Hz | Non-Invasive (Solid Core) | 200 A | - | - | - | 200:5 | - | - | DIN Rail | 2.441" L x 1.811" W (62.00mm x 46.00mm) | 3.169" (80.50mm) | Terminal Block |
|
|
MR-4CURR SENSE XFMR 125A CHAS MNT |
385 | - |
|
Datasheet |
MR | Bulk | Active | 60Hz | Non-Invasive (Solid Core) | 125 A | - | - | - | - | 30Ohm | - | Chassis Mount | 1.358" L x 1.260" W (34.50mm x 32.00mm) | 0.425" (10.80mm) | Wire Leads |
|
C/CT-1216CURR SENSE XFMR 120A CHAS MNT |
513 | - |
|
Datasheet |
C/CT | Bulk | Active | 50/60Hz | Non-Invasive (Split Core) | 120 A | - | - | 3000:1 | 3000:1 | - | - | Chassis Mount | 1.445" L x 0.906" W (36.70mm x 23.00mm) | 1.693" (43.00mm) | Wire Leads with Connector |

