New product.
LEM CASR 25-NP/SP3 current transducer, a precision electronic sensor designed to measure AC, DC and pulsed currents.
It uses closed-loop Fluxgate technology, providing high measurement accuracy, stability and galvanic isolation between the primary and secondary circuits.
The device is designed for direct mounting on a printed circuit board (PCB) and operates with a single 5 V DC power supply. It features an analogue voltage output and an integrated or external voltage reference.
Suitable for industrial applications, power conversion systems, photovoltaic inverters, power supplies and electronic control systems.
⚙️ Main Features
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Brand: LEM
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Model: CASR 25-NP/SP3
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Visible code: 717105
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Technology: Closed-loop Fluxgate
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Rated primary current: 25 A RMS
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Measurement range: ±85 A
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Measurable current types: AC / DC / pulsed
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Power supply: 5 V DC
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Output signal: Analogue voltage
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Zero-current output voltage: Approximately 2.5 V
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Nominal sensitivity: 25 mV/A
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Specified accuracy: 0.8%
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Operating temperature: -40 °C to +105 °C
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Mounting: PCB
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Isolation: Galvanic isolation between primary and secondary circuits
🔧 Main Functions
- Accurate measurement of DC and AC current.
- Detection of pulsed currents.
- Conversion of the measured current into an analogue voltage signal.
- Galvanic isolation between the power circuit and the measurement circuit.
- Current monitoring in electronic and industrial systems.
🏭 Applications
According to LEM's official documentation, this sensor is suitable for:
- Photovoltaic inverters and renewable energy systems.
- AC motor drives and servo drives.
- Static converters for DC motors.
- Uninterruptible power supplies (UPS).
- Switching-mode power supplies (SMPS).
- Power supplies for welding applications.
- Electronic power conversion and control systems.
⭐ Advantages
- High measurement accuracy.
- Closed-loop Fluxgate technology.
- Low temperature drift of offset and gain.
- Good immunity to rapid voltage changes (dv/dt).
- Single 5 V power supply.
- Compact dimensions for PCB mounting.
- Galvanic isolation between primary and secondary circuits.
📦 Product Condition
New product.
Shows normal cosmetic signs of previous installation and handling.
Terminals are present and visible in the photographs.
Operation has not been tested.
📋 Sale Includes
- 1 LEM CASR 25-NP/SP3 current transducer.
Sold exactly as shown in the photographs.
Summary
LEM CASR 25-NP/SP3 current transducer rated at 25 A RMS, featuring closed-loop Fluxgate technology, a 5 V DC power supply and an analogue voltage output. Compact PCB-mount sensor suitable for photovoltaic inverters, power converters, power supplies and industrial applications.
