Based on Hall-effect, magnetoresistive, or mutual-inductance principles, these sensors provide non-contact isolated current measurement. They capture minute leakage currents and large system surges, making them safety-critical components for new energy vehicle BMS coulomb counting, industrial servo drive overcurrent protection, and photovoltaic grid-tied inverter energy metering.
The SensorsX SX-ECFNA-300ALDGH series is a high-precision current transducer that uses fluxgate technology to measure DC, AC, pulsed and non-sinusoidal currents. Galvanic isolation makes it suitable for precision current measurement in industrial systems. A nominal ±300 A DC input produces a proportional ±150 mA output at a conversion ratio of 1:2,000. It offers accuracy better than 0.05% at 25 °C and a DC–100 kHz bandwidth (−3 dB) for tracking changing currents. The transducer operates from a dual ±12 V to ±15 V supply, with a green LED indicating normal operation.
Nominal Input: ±300 A DC; 212 A AC RMS.
Measuring Range: −440 to +440 A at ±15 V with a 10 Ω load.
Output / Power: ±150 mA; ratio 1:2,000; dual ±12 V to ±15 V supply (±5%).
Accuracy: <0.05% at 25 °C; linearity ±0.02% FS over 0 to ±300 A.
The SensorsX SX-ECFNA-500ALFBH series is a high-precision fluxgate current transducer for measuring DC, AC, pulsed and non-sinusoidal currents with galvanic isolation. It accepts a nominal ±500 A DC or 353 A AC RMS input, with a measuring range of −900 to +900 A. A conversion ratio of 1:2,000 provides a nominal ±250 mA current output at ±500 A DC. Accuracy is 100 ppm at 25 °C, with a DC–150 kHz frequency bandwidth (−3 dB). The transducer operates from a dual ±15 V supply, and a green LED indicates normal operation.
Nominal Input: ±500 A DC; 353 A AC RMS.
Measuring Range: −900 to +900 A.
Output / Power: ±250 mA; ratio 1:2,000; dual ±15 V supply (±5%).
Accuracy: 100 ppm at 25 °C; linearity 20 ppm over 0 to ±500 A.
The SensorsX SX-ECMNA-1000ALFA series is a closed-loop Hall-effect current sensor for measuring AC, DC, pulsed and mixed currents with galvanic isolation. A nominal 1,000 A primary input produces a nominal 200 mA secondary output at a ratio of 1:5,000. The measuring range is −2,800 to +2,800 A with a ±24 V supply and a 2 Ω load. The sensor operates from a dual ±15 V to ±24 V supply and provides a DC–200 kHz bandwidth (−3 dB). Its through-hole design allows the primary conductor to pass through the sensor aperture.
Input / Output: 1,000 A nominal input; 200 mA ±0.3% nominal output; ratio 1:5,000.
Measuring Range: −2,800 to +2,800 A at ±24 V supply and 2 Ω load.
Linearity: ±0.1% FS over 0 to ±1,000 A.
Dynamic Performance: DC–200 kHz (−3 dB); response ≤1 µs at 100 A/µs (10%–90%); tracked current rate >100 A/µs.
Power: Dual ±15 V to ±24 V supply (±5%).
Stability: Zero offset <±0.2 mA at 25 °C; thermal drift <±0.5 mA at zero input over −40 to +85 °C.
Isolation: 6 kV AC withstand voltage, 50 Hz, 1 min.
Temperature: Operating −40 to +85 °C; storage −40 to +125 °C; primary conductor ≤120 °C.
The SensorsX SX-ECMNA-200ALAP series is a closed-loop Hall-effect current sensor for measuring AC, DC, pulsed and mixed currents with galvanic isolation. A nominal 200 A primary input produces a nominal 100 mA secondary output at an output-to-input ratio of 1:2,000. The primary current measuring range is −300 to +300 A. The sensor operates from a dual ±12 V to ±15 V supply and provides a DC–100 kHz frequency bandwidth (−1 dB). Center the primary conductor in the aperture for optimal dynamic performance.
Input / Output: 200 A nominal input; 100 mA nominal output; ratio 1:2,000.
Measuring Range: −300 to +300 A.
Accuracy: <±0.5% at 25 °C; linearity <0.15% FS.
Dynamic Performance: DC–100 kHz (−1 dB); response <1 µs at 200 A input, 10%–90%; tracked current rate >200 A/µs.
Power: Dual ±12 V to ±15 V supply (±5%).
Stability: Zero offset <±0.2 mA at 25 °C; residual current <±0.15 mA as input returns to zero; offset thermal drift ≤±0.005 mA/°C at zero input over −40 to +85 °C.
Isolation: 3 kV AC withstand voltage, 50 Hz, 1 min.
Temperature: Operating −40 to +85 °C; storage −40 to +100 °C.
The SensorsX SX-ECMNA-25AAY series is a PCB-mounted, closed-loop Hall-effect current sensor for measuring AC, DC, pulsed and mixed currents. Four primary connection configurations provide nominal current ratings of 25 A, 12 A, 8 A and 6 A. With the 1:1,000 connection, the nominal input is 25 A, the nominal secondary output is 25 mA, and the measuring range is −36 to +36 A. The sensor operates from a dual ±12 V to ±15 V supply and provides a DC–100 kHz bandwidth (−1 dB). It offers accuracy <±0.7% at 25 °C with a ±15 V supply and a response time <1 µs.
Nominal Input: 25 A, 12 A, 8 A or 6 A, depending on the primary connection.
Measuring Range: ±36 A, ±18 A, ±12 A or ±9 A for ratios 1:1,000, 2:1,000, 3:1,000 or 4:1,000, respectively.
Output: 25 mA at 1:1,000; 24 mA with the other three connections.
Accuracy: <±0.7% at 25 °C, ±15 V supply; linearity <0.2% FS.
Stability: Zero offset <±0.15 mA at 25 °C; residual current <±0.15 mA as input returns to zero; offset thermal drift <±0.5 mA at zero input over −25 to +70 °C.
Isolation: 2.5 kV AC, 50 Hz, 1 min; isolation resistance ≥1,500 MΩ at 25 °C.
Temperature: Operating −25 to +70 °C; storage −40 to +100 °C.
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