LT 505-S/SP4

Current Sensors Overview

The LT 505-S/SP4 is a closed-loop Hall effect current transducer manufactured by LEM USA Inc. It provides galvanic isolation between the primary high-current circuit and the secondary measurement circuit. The device features a single pass-through design suitable for panel mounting. It supports bidirectional current measurement with an AC input current rating of 720 A and a DC input current range from -0 to 1400 A. The output current is specified at 0.03 A, and it operates with a supply voltage ranging from -15 to +15 V.

Current Sensors Feature Summary

• Closed-loop Hall effect technology ensures high precision in current measurement
• Galvanic isolation separates primary high-voltage circuits from secondary electronics
• Bidirectional capability allows detection of both positive and negative current flows

Current Sensors Applications

• Electronic measurement of direct currents
• Electronic measurement of alternating currents
• Measurement of pulsed currents in industrial systems

Current Sensors Procurement Notes

Verify the specific suffix SP4 against official LEM documentation to confirm pinout and mechanical compatibility. Check for recent Product Change Notifications regarding this part number to ensure no functional or packaging updates have occurred. Confirm that the required supply voltage range aligns with the system design before procurement.

Current Sensors Selection Notes

Select this component when precise measurement of DC, AC, or pulsed currents up to 720 A RMS is required. The closed-loop architecture offers superior linearity compared to open-loop sensors. Ensure the application requires galvanic isolation and fits the panel-mount form factor. Verify that the 0.03 A output current matches the downstream signal conditioning requirements.

Current Sensors Part Context

This model belongs to the LT 505 series of current transducers from LEM. The series is designed for robust industrial applications requiring reliable current feedback. Variants such as LT 505-S/SP3 and LT 505-T exist within the same family, differing primarily in mechanical specifications or terminal configurations rather than core sensing technology.

Current Sensors Replacement Considerations

LT 505-S/SP3 is a related variant within the same product family. Cross-referencing datasheets is necessary to verify mechanical and electrical compatibility before substitution.