WE-CST Current Sense Transformer
| Size | Dimensions | 3D | L (mm) | W (mm) | H (mm) | Mount | |
|---|---|---|---|---|---|---|---|
EE4.4 | 4.7 | 4.65 | 3.55 | SMT | |||
EE5 | 7.7 | 6.9 | 5.33 | SMT | |||
EE13/7/4 | 14.48 | 20.2 | 10.5 | SMT |
LTSpice files
Characteristics
- Learn more about current sense transformers
- Compact and low profile
- For SMD assembly
- Frequency up to 1 MHz
- Primary current rating to 40 A
- Operating temperature: -40 °C to +130 °C
- Refer to our Current Sense Transformer Design Tool on REDEXPERT to select the right CST for your application.
Applications
- AC current detection
- Switch mode power supply
- Overload sensing
- Load drop/shutdown detection
- Metering
- Load measurements
- High frequency current sensing
Products
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Reset allOrder Code | Datasheet | Downloads | Status | L(µH) | n | IR(A) | ∫Udt(µVs) | VT(V (AC)) | RDC 1(mΩ) | RDC 2(Ω) | SamplesAvailability & Sample | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
 | 749252020 | SPEC33 µH, 1:20, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance33 µH | Turns Ratio1:20 | Rated Current7 A | Voltage-µSecond9 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 20.35 Ω | –Check availability | |
| 749252030 | SPEC74 µH, 1:30, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance74 µH | Turns Ratio1:30 | Rated Current7 A | Voltage-µSecond13.5 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 20.8 Ω | –Check availability | |
 | 749251020 | SPEC80 µH, 1:20, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance80 µH | Turns Ratio1:20 | Rated Current20 A | Voltage-µSecond10 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 20.2 Ω | –Check availability | |
| 749252040 | SPEC132 µH, 1:40, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance132 µH | Turns Ratio1:40 | Rated Current7 A | Voltage-µSecond18 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 21.6 Ω | –Check availability | |
| 749251030 | SPEC180 µH, 1:30, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance180 µH | Turns Ratio1:30 | Rated Current20 A | Voltage-µSecond15 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 20.48 Ω | –Check availability | |
| 749252050 | SPEC205 µH, 1:50, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance205 µH | Turns Ratio1:50 | Rated Current7 A | Voltage-µSecond22.5 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 22.5 Ω | –Check availability | |
 | 7492540020 | SPEC224 µH, 1:20, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance224 µH | Turns Ratio1:20 | Rated Current40 A | Voltage-µSecond49 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.033 Ω | –Check availability | |
| 749252060 | SPEC295 µH, 1:60, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance295 µH | Turns Ratio1:60 | Rated Current7 A | Voltage-µSecond27 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 23.6 Ω | –Check availability | |
| 749251040 | SPEC320 µH, 1:40, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance320 µH | Turns Ratio1:40 | Rated Current20 A | Voltage-µSecond20 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 20.9 Ω | –Check availability | |
| 749252070 | SPEC400 µH, 1:70, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance400 µH | Turns Ratio1:70 | Rated Current7 A | Voltage-µSecond31.5 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 24.6 Ω | –Check availability | |
| 749251050 | SPEC500 µH, 1:50, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance500 µH | Turns Ratio1:50 | Rated Current20 A | Voltage-µSecond25 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 21.4 Ω | –Check availability | |
| 7492540030 | SPEC504 µH, 1:30, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance504 µH | Turns Ratio1:30 | Rated Current40 A | Voltage-µSecond74 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.093 Ω | –Check availability | |
| 749251060 | SPEC720 µH, 1:60, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance720 µH | Turns Ratio1:60 | Rated Current20 A | Voltage-µSecond30 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 21.75 Ω | –Check availability | |
| 749252100 | SPEC820 µH, 1:100, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance820 µH | Turns Ratio1:100 | Rated Current7 A | Voltage-µSecond45 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 29.5 Ω | –Check availability | |
| 7492540040 | SPEC896 µH, 1:40, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance896 µH | Turns Ratio1:40 | Rated Current40 A | Voltage-µSecond99 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.13 Ω | –Check availability | |
| 749251070 | SPEC980 µH, 1:70, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance980 µH | Turns Ratio1:70 | Rated Current20 A | Voltage-µSecond35 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 22.2 Ω | –Check availability | |
| 749252125 | SPEC1280 µH, 1:125, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance1280 µH | Turns Ratio1:125 | Rated Current7 A | Voltage-µSecond56.2 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 213 Ω | –Check availability | |
| 7492540050 | SPEC1400 µH, 1:50, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance1400 µH | Turns Ratio1:50 | Rated Current40 A | Voltage-µSecond124 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.202 Ω | –Check availability | |
| 749252150 | SPEC1800 µH, 1:150, 7 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance1800 µH | Turns Ratio1:150 | Rated Current7 A | Voltage-µSecond67.5 µVs | Insulation Test Voltage750 V (AC) | DC Resistance 13 mΩ | DC Resistance 221 Ω | –Check availability | |
| 749251100 | SPEC2000 µH, 1:100, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance2000 µH | Turns Ratio1:100 | Rated Current20 A | Voltage-µSecond50 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 25.5 Ω | –Check availability | |
| 7492540060 | SPEC2000 µH, 1:60, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance2000 µH | Turns Ratio1:60 | Rated Current40 A | Voltage-µSecond148 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.305 Ω | –Check availability | |
| 7492540070 | SPEC2740 µH, 1:70, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance2740 µH | Turns Ratio1:70 | Rated Current40 A | Voltage-µSecond173 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.367 Ω | –Check availability | |
| 749251125 | SPEC3000 µH, 1:125, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance3000 µH | Turns Ratio1:125 | Rated Current20 A | Voltage-µSecond68 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 26.5 Ω | –Check availability | |
| 749251150 | SPEC4500 µH, 1:150, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance4500 µH | Turns Ratio1:150 | Rated Current20 A | Voltage-µSecond75 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 29.5 Ω | –Check availability | |
| 7492540100 | SPEC5600 µH, 1:100, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance5600 µH | Turns Ratio1:100 | Rated Current40 A | Voltage-µSecond248 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 20.805 Ω | –Check availability | |
| 749251200 | SPEC8000 µH, 1:200, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance8000 µH | Turns Ratio1:200 | Rated Current20 A | Voltage-µSecond100 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 216.5 Ω | –Check availability | |
| 749251250 | SPEC12500 µH, 1:250, 20 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance12500 µH | Turns Ratio1:250 | Rated Current20 A | Voltage-µSecond125 µVs | Insulation Test Voltage500 V (AC) | DC Resistance 10.75 mΩ | DC Resistance 223.5 Ω | –Check availability | |
| 7492540150 | SPEC12600 µH, 1:150, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance12600 µH | Turns Ratio1:150 | Rated Current40 A | Voltage-µSecond372 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 21.9 Ω | –Check availability | |
| 7492540200 | SPEC22400 µH, 1:200, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance22400 µH | Turns Ratio1:200 | Rated Current40 A | Voltage-µSecond496 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 22.63 Ω | –Check availability | |
| 7492540500 | SPEC135000 µH, 1:500, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance135000 µH | Turns Ratio1:500 | Rated Current40 A | Voltage-µSecond1240 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 221.2 Ω | –Check availability | |
| 7492540750 | SPEC300000 µH, 1:750, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance300000 µH | Turns Ratio1:750 | Rated Current40 A | Voltage-µSecond1860 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 250.1 Ω | –Check availability | |
| 7492541000 | SPEC540000 µH, 1:1000, 40 A | Availability – | Status Activei| Production is active. Expected lifetime: >10 years. | Inductance540000 µH | Turns Ratio1:1000 | Rated Current40 A | Voltage-µSecond2480 µVs | Insulation Test Voltage1500 V (AC) | DC Resistance 10.28 mΩ | DC Resistance 287.64 Ω | –Check availability |
Availability Forecast
WE item number: –
VPELead time
–– weeks
| Expected Availability | Opening inventory | Quantity |
|---|---|---|
| Current Availability | – | – |
There is no forecast for this quantity request.
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Products of interest
Videos
Würth Elektronik Webinar: Using Current Sense Transformers