IT405S

Current Sensors Overview

The IT405S is a closed-loop compensated current transducer from LEM, designed for ultra-high precision measurement of direct or alternating currents. It features galvanic separation between the primary and secondary circuits, ensuring safety and signal integrity in demanding environments. The device supports a primary current rating of 400 A with a single-pass-through configuration. It operates within a wide temperature range of -40 °C to +85 °C, making it suitable for industrial applications requiring reliable feedback control.

Current Sensors Feature Summary

• Closed-loop compensation technology ensures high accuracy and linearity
• Galvanic isolation between primary and secondary circuits for safety
• Wide operating temperature range for robust industrial performance

Current Sensors Applications

• Feedback elements in power electronics systems
• Ultra-high precision current measurement applications
• Industrial motor drives and inverters
• Power supply monitoring and control

Current Sensors Procurement Notes

Verify the exact part number suffix against official LEM documentation to ensure correct pinout and mounting specifications. Confirm that the procurement channel provides genuine components with traceable origin. Check for any specific handling requirements related to the sensitive Hall effect elements during storage and installation.

Current Sensors Selection Notes

Select this model when high precision and fast dynamic response are critical for current feedback loops. Consider the 400 A primary rating and single-pass design for space-constrained installations. Ensure the application environment stays within the specified -40 °C to +85 °C operational limits for optimal performance and longevity.

Current Sensors Part Context

The IT405S belongs to LEM's IT series of ULTRASTAB current transducers. This series is engineered for applications demanding exceptional stability and accuracy over time and temperature variations. It represents a solution for advanced power management where precise current sensing is vital for system efficiency and protection.

Current Sensors Replacement Considerations

Consult official LEM substitution guides for cross-references. Verify mechanical footprint and electrical interface compatibility before replacing existing units. Generic equivalents may not match the closed-loop precision characteristics required for original design specifications.