CTSR 2-TP/SP19 Current Transducer – The Ideal Choice for Precision Low-Current Measurement

CTSR2-TP/SP19 Product Overview

The CTSR 2-TP/SP19 is a high-performance closed-loop fluxgate current transducer from LEM, the world-leading manufacturer of current sensing solutions. Part of the renowned CTSR series, this model is specifically designed for precision measurement of low currents, with a rated current of 2 A and a maximum measuring range of 3 A. Leveraging LEM’s proprietary closed-loop fluxgate technology, the CTSR 2-TP/SP19 delivers outstanding accuracy and stability in milliampere-level current detection, making it the ideal solution for PCB-mount low-current applications.

Whether you are developing new energy charging equipment, industrial automation control systems, or highreliability power electronics, the CTSR 2-TP/SP19 provides precise and stable current sensing to safeguard your product’s performance.

CTSR2-TP/SP19 Key Advantages & Features

High Accuracy with 1.9% Error

Thanks to LEM’s patented closed-loop fluxgate technology, the CTSR 2-TP/SP19 maintains excellent linearity across the entire temperature range. With an accuracy of 1.9%, it reliably captures minute current variations, making it especially suitable for demanding residual current monitoring and leakage current detection applications.

Ultra-Wide Operating Temperature for Harsh Environments

The device supports a wide operating temperature range from -40°C to +105°C. Whether deployed in freezing outdoor conditions or high-temperature industrial plants, the CTSR 2-TP/SP19 delivers consistent, dependable performance, ensuring your equipment operates flawlessly under any circumstances.

AC+DC Capability – One Unit, Multiple Uses

It measures both AC and DC signals, enabling precise detection of mixed AC+DC currents. This versatility simplifies component selection and adapts to a variety of application scenarios.

Single-Supply Operation for Easy Design

With +5 V single-supply operation, the transducer eliminates the need for complex dual-supply designs, significantly reducing circuit design complexity and system costs.

PCB-Mount Form Factor for Seamless Integration

The PCB-mount package is compact and easy to integrate into a wide range of electronic devices. Whether used in new product development or retrofitting existing equipment, the CTSR 2-TP/SP19 fits right in.

CTSR2-TP/SP19 Technical Specifications

CTSR2-TP/SP19 Typical Applications

Electric Vehicle Battery Management Systems (BMS)

In EV BMS, accurate current sensing is critical for battery safety. The CTSR 2-TP/SP19 real-time monitors charge/discharge currents, providing precise data to the BMS for optimal control.

Motor Drive & Control

In motor control applications, the CTSR series transducers continuously monitor operating currents, helping the system detect overloads or faults, thereby protecting equipment and extending service life.

Photovoltaic Inverters

For PV inverters, the CTSR 2-TP/SP19 accurately tracks current variations on both DC and AC sides, delivering reliable data for power optimisation.

Charging Piles & Power Supplies

LEM CTSR transducers excel in EV charging stations, offering stable current sampling with low temperature drift, ensuring reliable performance under varying loads.

Industrial Automation & Servo Systems

In the era of Industry 4.0, high-precision current transducers are playing an increasingly important role in photovoltaic power conversion, rail transit, smart warehousing, and more.

CTSR2-TP/SP19 Why Choose LEM?

LEM is the industry standard-setter in current sensing, offering a comprehensive product portfolio covering currents from milliamperes up to 24 kA, with multiple integration options including bus-bar and PCB-mount types. Choosing LEM means choosing reliability, accuracy, and longterm durability.