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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 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
055664TRANSF CRNT SENSE 200:1 12.4MH |
118 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 200kHz ~ 3MHz | Invasive | - | 12.4 mH | 715VµS | - | - | 1.8Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
RL-9740-1CURRENT SENSE XFMR 50:1 5MH TH |
1,000 | - |
|
Datasheet |
- | Bulk | Active | 10kHz ~ 200kHz | Invasive | - | 5 mH | - | 50:1 | 50:1 | 700mOhm Secondary | - | Through Hole | 0.750" L x 0.565" W (19.05mm x 14.35mm) | 0.750" (19.05mm) | PC Pin |
|
SCS-4-4-70T-TRSMD CURRENT TRANSFORMER 400H-TR |
2,000 | - |
|
Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 7 A | 400 µH | - | 70:1 | - | 3mOhm Primary, 4.6Ohm Secondary Max | - | Surface Mount | 0.185" L x 0.144" W (4.70mm x 3.65mm) | 0.140" (3.55mm) | J Lead |
|
SCS-4-4-60T-TRSMD CURRENT TRANSFORMER 295H-TR |
1,996 | - |
|
Datasheet |
SCS | Tape & Reel (TR) | Active | 50kHz ~ 1MHz | Invasive | 7 A | 295 µH | - | 60:1 | - | 3mOhm Primary, 3.6Ohm Secondary Max | - | Surface Mount | 0.185" L x 0.144" W (4.70mm x 3.65mm) | 0.140" (3.55mm) | J Lead |
|
AS-105CURR SENSE XFMR 30A 1:750 VRT |
499 | - |
|
Datasheet |
AS | Bulk | Active | - | - | - | - | - | - | - | - | - | - | 0.677" L x 0.375" W (17.20mm x 9.53mm) | 0.803" (20.40mm) | - |
|
055651TRANSF CRNT SENSE 100:1 24MH |
115 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 24 mH | 360VµS | - | - | 470Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
055652TRANSF CRNT SENSE 200:1 96MH |
114 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 96 mH | 715VµS | - | - | 1.8Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
055654TRANSF CRNT SENSE 400:1 384MH |
120 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 384 mH | 1430VµS | - | - | 5.7Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
PMS6322.125NLTTRANSF CURRENT SENSE 1:125 50A |
305 | - |
|
Datasheet |
PMS6322.XXXNLT | Tape & Reel (TR) | Active | 20kHz ~ 1MHz | Invasive | 50 A | 7 mH | - | 1:125 | - | 500µOhm Primary, 4.2Ohm Secondary (Max) | - | Surface Mount | 0.122" L x 0.252" W (3.10mm x 6.40mm) | 0.295" (7.50mm) | Gull Wing |
|
AS-405CURR SENSE XFMR 50A 1:500 VRT |
200 | - |
|
Datasheet |
AS | Bulk | Active | - | - | - | - | - | - | - | - | - | - | 0.906" L x 0.610" W (23.00mm x 15.50mm) | 0.984" (25.00mm) | - |
|
RL-9740-2CURRENT SENSE XFMR 100:1 20MH TH |
1,000 | - |
|
Datasheet |
- | Bulk | Active | 10kHz ~ 200kHz | Invasive | 37 A | 20 mH | - | 100:1 | 1:100 | 1.4Ohm Secondary | - | Through Hole | 0.750" L x 0.565" W (19.05mm x 14.35mm) | 0.750" (19.05mm) | PC Pin |
|
055655TRANSF CRNT SENSE 500:1 600MH |
120 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 600 mH | 1785VµS | - | - | 9.4Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
RL-9740-3CURRENT SENSE XFMR 200:1 80MH TH |
994 | - |
|
Datasheet |
- | Bulk | Active | 10kHz ~ 200kHz | Invasive | 38 A | 80 mH | - | 200:1 | 1:200 | 4.5Ohm Max | - | Through Hole | 0.750" L x 0.565" W (19.05mm x 14.35mm) | 0.750" (19.05mm) | PC Pin |
|
055656TRANSF CRNT SENSE 600:1 864MH |
118 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 864 mH | 2140VµS | - | - | 13.5Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
RL-9740-4CURRENT SENSE XFMR 300:1 180MH T |
1,000 | - |
|
Datasheet |
- | Bulk | Active | 10kHz ~ 200kHz | Invasive | 37 A | 180 mH | - | 300:1 | 1:300 | 11Ohm Secondary | - | Through Hole | 0.750" L x 0.565" W (19.05mm x 14.35mm) | 0.750" (19.05mm) | PC Pin |
|
055657TRANSF CRNT SENS 1000:1 2400MH |
119 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 10kHz ~ 300kHz | Invasive | - | 2.4 H | 3570VµS | - | - | 35Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
055658TRANSF CRNT SENSE 1000:1 30H |
120 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 50Hz | Invasive | - | 30 H | 6.4kVµS | 1000:1 | - | 25Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
055659TRANSF CRNT SENSE 1500:1 67.5H |
120 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 50Hz | Invasive | - | 67.5 H | 9500VµS | 1500:1 | - | 52Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
055661TRANSF CRNT SENSE 2500:1 187.5H |
120 | - |
|
Datasheet |
0556xx, Kaschke | Tray | Active | 50Hz | Invasive | - | 187.5 H | 15.9kVµS | 2500:1 | - | 135Ohm | - | Through Hole | 1.063" L x 0.709" W (27.00mm x 18.00mm) | 0.689" (17.50mm) | PC Pin |
|
AS-312CURR SENSE XFMR 15A 1:200CT VRT |
200 | - |
|
Datasheet |
AS | Bulk | Active | - | - | - | - | - | - | - | - | - | - | 0.701" L x 0.902" W (17.80mm x 22.90mm) | 0.701" (17.80mm) | - |

