LF 1010-S/SP33

Current Sensors Overview

The LF 1010-S/SP33 is a closed-loop Hall effect current sensor designed for precise electronic measurement of DC, AC, and pulsed currents. It provides galvanic isolation between the primary and secondary circuits. The module features a single pass-through configuration with a nominal primary current (IPN) of 1000 ARMS. It operates on a bipolar power supply of +/- 24 V. The device ensures high accuracy across its operating temperature range and offers high mounting versatility.

Current Sensors Feature Summary

• Closed-loop Hall effect technology for accurate current measurement
• Galvanic separation between primary and secondary circuits
• High accuracy maintained over the full operating temperature range
• Single pass-through module design with versatile mounting options

Current Sensors Applications

• Electronic measurement of direct current (DC)
• Electronic measurement of alternating current (AC)
• Measurement of pulsed currents in industrial systems

Current Sensors Procurement Notes

Verify the specific suffix SP33 against official LEM documentation to confirm pinout and mechanical dimensions. Ensure the application requires a 1000 A nominal rating and +/- 24 V supply. Confirm that the single pass-through package fits the intended PCB or panel layout. Request the latest datasheet to validate insulation voltage ratings and thermal characteristics for the specific environment.

Current Sensors Selection Notes

Select this component when high precision is required for bidirectional current monitoring in high-power applications. The closed-loop architecture minimizes phase shift and non-linearity errors compared to open-loop sensors. Consider the 1000 A nominal capacity and the need for galvanic isolation. Evaluate the thermal management requirements given the power dissipation associated with the internal control loop and the +/- 24 V supply constraints.

Current Sensors Part Context

This part belongs to the LF 1010-S series from LEM USA Inc., which utilizes closed-loop Hall effect technology. The series is engineered for robust performance in demanding electrical environments. The LF 1010-S/SP33 variant specifically denotes the packaging and terminal configuration suitable for single pass-through installation. It represents a standard solution for industrial current sensing where reliability and accuracy are critical.

Current Sensors Replacement Considerations

Direct substitutes within the same family include variants such as LF 1010-S/SPA4 or LF 1010-S/SPA5, provided the mechanical footprint and pin assignment match the existing design. Verify that alternative suffixes do not alter the electrical interface or mounting style. Cross-reference the exact IPN and supply voltage requirements to ensure functional equivalence without redesigning the support circuitry.