2SFT-500

Overview

The Sifam Tinsley 2SFT-500 is a split-core current transformer from the Omega 30A series, designed for panel mounting. It features a primary current rating of 50 A and a secondary output of 5 A, yielding a 50:5 turns ratio. The device operates within a frequency range of 50 Hz to 400 Hz. It has an inner diameter of 1.13 inches (approximately 28.7 mm) and utilizes foot mounting with integrated terminals. The casing is constructed from 10% glass-filled polycarbonate with UL 94V-0 flame retardant classification. Insulation levels are rated at 600 Volts with a 10 kV BIL full-wave withstand capability.

Feature Summary

• Split-core design facilitates installation around existing conductors without circuit interruption.
• Foot-mounted construction with integrated terminals ensures secure panel attachment.
• High dielectric insulation supports operation in demanding electrical environments.

Applications

• Electrical power monitoring systems
• Industrial energy management meters
• Current sensing for protection relays

Procurement Notes

Verify that the required conductor size fits within the 1.13-inch inner diameter aperture. Confirm that the system frequency falls within the specified 50 Hz to 400 Hz operational range. Ensure the mounting surface accommodates the foot-mount configuration and terminal access. Check compliance requirements against UL 94V-0 standards if flame retardancy is critical for the installation environment.

Selection Notes

Select this model when a non-invasive measurement solution is required for conductors up to the specified aperture size. The 50:5 ratio is suitable for standard instrumentation inputs requiring 5 A secondary current. Consider the 600 V insulation rating for low-voltage distribution applications. Verify that the operating temperature limits align with the environmental conditions of the installation site.

Part Context

This component belongs to the Sifam Tinsley Omega 30A series, which provides ANSI-compliant current transformers. The brand specializes in instrumentation solutions for power and industrial sectors. This specific part number represents a fixed-ratio current sense transformer designed for accurate AC current measurement in panel-mounted configurations.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.