ELCT30-31

Overview

The Littelfuse ELCT30-31 is a current sense transformer designed for industrial applications. It features a 600:1 turns ratio and supports a continuous primary current of 30 A. The device operates within a frequency range of 50 Hz to 400 Hz. It utilizes a free-hanging in-line mounting style with a sensor hole size of 31.6 mm (1.24 in). The unit includes flux condensation capabilities and is constructed to be lead-free and RoHS compliant.

Feature Summary

• Provides accurate current sensing via a 600:1 transformation ratio
• Supports in-line free-hanging installation for flexible integration
• Operates effectively across 50 Hz to 400 Hz frequency ranges
• Features a 31.6 mm window aperture for conductor passage

Applications

• Industrial power monitoring systems
• Current sensing in power conversion equipment
• Overload protection circuitry
• Energy management instrumentation

Procurement Notes

Verify the specific part number ELCT30-31 against official Littelfuse documentation to ensure compatibility with required voltage and current ratings. Confirm that the 31.6 mm window dimension matches the conductor size in the target application. Check for RoHS compliance requirements if operating in regulated environments. Ensure the 600:1 ratio aligns with downstream signal processing needs.

Selection Notes

Select this component when a 30 A primary current rating and 600:1 ratio are required for in-line current monitoring. The 31.6 mm aperture accommodates larger conductors without additional busbar modifications. Consider the 50-400 Hz operational range for suitability in standard power or variable frequency drive applications. Verify mechanical clearance for the free-hanging configuration during system design.

Part Context

This model belongs to the ELCT series of current transformers manufactured by Littelfuse Inc. The series focuses on providing reliable current sensing solutions for industrial technology products. These components support safe electrical energy transfer and are part of Littelfuse's broader portfolio of sensors and control devices.

Replacement Considerations

Consult Littelfuse official cross-reference guides for verified substitutes. Ensure replacement units maintain identical 600:1 ratios, 30 A ratings, and 31.6 mm window dimensions. Verify frequency response and mounting style compatibility before substitution.

FAQ

What is the maximum primary current rating?

The ELCT30-31 has a continuous primary current rating of 30 A.

Does the device support high-frequency operations?

No, it is rated for frequencies between 50 Hz and 400 Hz.