Current Sense Transformers

Manufacturer 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

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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
7492540500

7492540500

CURR SENSE XFMR 1:500 40A SMD

Würth Elektronik

922 -
RFQ
7492540500

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
7492541000

7492541000

CURR SENSE XFMR 1:1000 40A SMD

Würth Elektronik

861 -
RFQ
7492541000

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
7492540200

7492540200

CURR SENSE XFMR 1:200 40A SMD

Würth Elektronik

430 -
RFQ
7492540200

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
7492540020

7492540020

CURR SENSE XFMR 1:20 40A SMD

Würth Elektronik

236 -
RFQ
7492540020

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-05

CT-05

CURR SENSE XFMR 500:1 10A TH

KEMET

1,051 -
RFQ
CT-05

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
CST306-1T

CST306-1T

CURR SENSE XFMR 35A T/H

Triad Magnetics

912 -
RFQ
CST306-1T

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-64488NL

PE-64488NL

CURR SENSE XFMR 20A T/H

Pulse Electronics

658 -
RFQ
PE-64488NL

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
B78417A2287A003

B78417A2287A003

CURR SENSE XFMR 1:125 SMD

EPCOS - TDK Electronics

2,211 -
RFQ
B78417A2287A003

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
B78417A2285A003

B78417A2285A003

CURR SENSE XFMR 1:50 SMD

EPCOS - TDK Electronics

1,924 -
RFQ
B78417A2285A003

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-1010

CT-1010

CURR SENSE XFMR 10A T/H

Amgis, LLC

1,202 -
RFQ
CT-1010

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-1015

CT-1015

CURR SENSE XFMR 15A T/H

Amgis, LLC

427 -
RFQ
CT-1015

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-1010

CST-1010

CURR SENSE XFMR 10A TH

Triad Magnetics

166 -
RFQ
CST-1010

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
CST206-3T

CST206-3T

CURR SENSE XFMR 70A T/H

Triad Magnetics

180 -
RFQ
CST206-3T

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-06-100

CT-06-100

CURR SENSE XFMR 1000:1 10A TH

KEMET

108 -
RFQ
CT-06-100

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-1030

CST-1030

CURR SENSE XFMR 30A T/H

Triad Magnetics

2,302 -
RFQ
CST-1030

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
PA3828NL

PA3828NL

CURR SENSE XFMR 100A

Pulse Electronics

465 -
RFQ
PA3828NL

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-ROHS

SPCT 62/40 250/5 A VA 2.5 CL 0.5-CU-ROHS

CURR SENSE XFMR 250A DIN RAIL

Selec Controls USA Inc.

676 -
RFQ
SPCT 62/40 250/5 A VA 2.5 CL 0.5-CU-ROHS

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-ROHS

SPCT 62/40 200/5 A VA 2.5 CL 0.5-CU-ROHS

CURR SENSE XFMR 200A DIN RAIL

Selec Controls USA Inc.

147 -
RFQ
SPCT 62/40 200/5 A VA 2.5 CL 0.5-CU-ROHS

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-4

MR-4

CURR SENSE XFMR 125A CHAS MNT

KEMET

385 -
RFQ
MR-4

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-1216

C/CT-1216

CURR SENSE XFMR 120A CHAS MNT

KEMET

513 -
RFQ
C/CT-1216

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
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