ATO-125-B225-D16

Current Sense Transformers Overview

The ATO-125-B225-D16 is a split-core current transformer manufactured by LEM USA Inc., designed for the measurement of AC primary currents up to 125 A. It features a rated secondary voltage ratio of 225 mV at the rated primary current (IPr). The device supports applications with basic insulation up to 600 V CAT III PD2. As a self-powered component, it eliminates the need for external excitation power supplies, relying on the measured current for operation.

Current Sense Transformers Feature Summary

• Split-core design enabling installation without disconnecting primary conductors
• High accuracy and low phase shift characteristics for precise measurements
• Self-powered operation requiring no auxiliary supply
• Rated for use in systems with basic insulation up to 600 V CAT III PD2

Current Sense Transformers Applications

• Measurement of AC primary currents in industrial distribution systems
• Energy monitoring and power quality analysis
• Integration into metering devices requiring isolated current sensing

Current Sense Transformers Procurement Notes

Verify the specific suffix codes against the official LEM datasheet to ensure compatibility with required insulation levels and mounting configurations. Confirm that the 125 A rating aligns with the maximum expected primary current in the target application. Check for any regional regulatory compliance requirements such as RoHS or REACH status before finalizing procurement orders.

Current Sense Transformers Selection Notes

Select this model when non-intrusive installation is required due to its split-core architecture. Ensure the system voltage does not exceed the 600 V CAT III PD2 limit. Consider the 225 mV output ratio for compatibility with downstream signal conditioning circuits or data acquisition systems. Validate that the frequency range of the AC current matches the transformer's operational specifications.

Current Sense Transformers Part Context

This component belongs to the ATO series of split-core current transformers from LEM. These sensors are engineered for high accuracy and reliability in AC current measurement applications. The series offers various rated currents and output ratios to suit different industrial and commercial energy monitoring needs.

Current Sense Transformers Replacement Considerations

Consult LEM documentation for direct substitutes within the ATO series. Verify that alternative models match the 125 A rating, 225 mV output, and split-core form factor. Ensure electrical isolation ratings and physical dimensions are compatible with existing installations.