2RL-250

Overview

The Sifam Tinsley Instrumentation Inc 2RL-250 is a solid core AC current sense transformer designed for free-hanging in-line installation. It features a primary current rating of 25 A and a secondary output of 5 A, with a sensing window diameter of 1.05 inches (approximately 26.7 mm). The device operates within a frequency range of 50 Hz to 400 Hz and maintains an accuracy of ±5%. Constructed as a non-invasive component, it supports standard industrial power monitoring applications requiring reliable current transformation without circuit interruption.

Feature Summary

• Solid core design enables non-invasive installation around conductors
• Free-hanging in-line mounting configuration simplifies integration
• Operates across a wide frequency spectrum from 50 Hz to 400 Hz

Applications

• Industrial power distribution monitoring systems
• Electrical panel current sensing circuits
• Transformer-based isolation in measurement equipment

Procurement Notes

Verify the specific accuracy class and frequency response requirements against the official datasheet before procurement. Confirm that the 1.05-inch sensing window accommodates the target conductor size. Ensure the application environment is compatible with the transformer's operational limits. Cross-reference the part number with authorized distributors to confirm availability and authenticity. Review mechanical dimensions for adequate clearance during installation.

Selection Notes

Select this model when a robust, non-invasive current sensing solution is required for AC signals between 50 Hz and 400 Hz. The 25 A primary rating suits moderate current applications where direct shunt measurement is impractical. Consider the ±5% accuracy tolerance for general monitoring rather than precision metering. The in-line form factor is ideal for retrofitting existing wiring or custom harness assemblies.

Part Context

This component belongs to the current sense transformer category within Sifam Tinsley's instrumentation portfolio. It serves as a passive magnetic coupling device, stepping down high primary currents to standardized secondary levels for safe measurement. Unlike electronic transducers, it relies on electromagnetic induction, offering inherent galvanic isolation between the primary circuit and the sensing load.

Replacement Considerations

Publicly confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing secondary loads and wiring configurations if sourcing alternatives. Ensure any replacement matches the 25:5 ratio and physical aperture constraints.