LA 55-TP/SP27

Current Sensors Overview

The LA 55-TP/SP27 is a closed-loop compensated current transducer manufactured by LEM USA Inc. It utilizes Hall effect technology to provide galvanic isolation between the primary and secondary circuits. The device is designed for the electronic measurement of DC, AC, and pulsed currents with a nominal primary current (I_PN) of 50 A. It features printed circuit board mounting in an insulated plastic case. The component supports bidirectional operation and includes a single channel output.

Current Sensors Feature Summary

• Closed-loop compensation using Hall effect technology for high accuracy
• Galvanic separation between primary and secondary circuits
• Capable of measuring DC, AC, and pulsed current signals
• Designed for printed circuit board mounting

Current Sensors Applications

• Electronic measurement of direct current
• Electronic measurement of alternating current
• Measurement of pulsed current signals

Current Sensors Procurement Notes

Verify the specific suffix SP27 against the official LEM datasheet to confirm pinout and mounting configuration compatibility. Ensure the required nominal current rating of 50 A aligns with the application's peak load requirements. Confirm that the PCB mounting style matches the target design layout. Check for any specific insulation recognition standards required by the end equipment safety regulations.

Current Sensors Selection Notes

Select this transducer when precise measurement of mixed signal types including DC and AC is required within a 50 A range. The closed-loop architecture ensures linearity and bandwidth suitable for dynamic loads. Verify that the PCB footprint accommodates the insulated plastic case dimensions. Consider the thermal management capabilities if operating near maximum rated conditions.

Current Sensors Part Context

This component belongs to the LA series of current transducers from LEM. These devices are characterized by their use of Hall effect sensors combined with magnetic compensation coils. The series offers various mounting options and current ratings, providing a standardized solution for industrial power monitoring and control applications requiring electrical isolation.

Current Sensors Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Consult LEM technical support for cross-reference information regarding alternative models with similar 50 A ratings and PCB mounting configurations.