CKSR 25-NP/SP3

Current Sensors Overview

The CKSR 25-NP/SP3 is a board-mount current sensor manufactured by LEM USA Inc. It utilizes fluxgate technology with a closed-loop design to measure AC and DC currents. The device features a single channel with a primary rated current of 25A. It operates on a supply voltage ranging from 4.75V to 5.25V, drawing a maximum supply current of 20mA. The sensor provides a voltage output ratio and achieves an accuracy of ±0.8% with a linearity of ±1%. It has a response time of 0.3µs and supports a frequency range up to 300kHz. The unit is designed for through-hole installation and functions within an operating temperature range of -40°C to 105°C.

Current Sensors Feature Summary

• Employs fluxgate technology for high-precision measurement of both AC and DC currents.
• Features a closed-loop design ensuring stable performance across a wide frequency range.
• Provides a voltage output signal suitable for direct interface with control systems.

Current Sensors Applications

• Residual Current Device (RCD) monitoring
• Industrial motor drive current sensing
• Power supply feedback loops

Current Sensors Procurement Notes

Verify the specific suffix SP3 against the official LEM datasheet to confirm pinout configuration and packaging details. Ensure the supply voltage remains within the 4.75V to 5.25V range during integration. Confirm that the thermal environment stays within the specified -40°C to 105°C operating limits. Cross-reference the manufacturer part number with authorized distributors to ensure authenticity.

Current Sensors Selection Notes

Select this component when high bandwidth and low latency are required for current monitoring applications. The fluxgate technology offers superior stability compared to Hall effect sensors in demanding environments. Consider the 25A rating and voltage output compatibility with your microcontroller or ADC inputs. Evaluate the through-hole mounting requirements against your PCB layout constraints.

Current Sensors Part Context

The CKSR series represents LEM's compact current sensors designed specifically for Residual Current Devices (RCD). These sensors integrate fluxgate technology to provide accurate measurements in space-constrained industrial applications. The CKSR 25-NP/SP3 is part of this specialized family, offering robust performance for safety-critical current detection tasks.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult LEM USA Inc. directly for potential cross-references or updated model replacements.