ATO-100-B333-D16

Current Sense Transformers Overview

The ATO-100-B333-D16 is a split-core current transformer manufactured by LEM USA Inc., designed for the measurement of AC primary currents. It features a rated primary current of 100 A and operates at frequencies of 50 Hz to 60 Hz. The device provides a secondary output voltage ratio of 333 mV at the rated primary current (IPr). It supports applications up to 600 V CAT III PD2 and offers high accuracy with low phase shift, suitable for chassis or DIN rail mounting configurations.

Current Sense Transformers Feature Summary

• Split-core design facilitates installation around existing busbars without disconnecting conductors
• High accuracy performance with minimal phase shift for precise AC current monitoring
• Rated for industrial voltage environments up to 600 V CAT III PD2

Current Sense Transformers Applications

• Industrial power distribution systems requiring non-intrusive current monitoring
• Electrical panels and switchgear utilizing DIN rail or chassis mounting
• Energy management systems measuring AC loads in commercial buildings

Current Sense Transformers Procurement Notes

Verify that the specific part number corresponds to the 100 A rated primary current variant within the ATO series. Confirm whether the required mounting configuration matches chassis or DIN rail specifications, as availability may vary between distributors. Ensure compatibility with 50 Hz or 60 Hz operational frequencies and validate insulation ratings against the 600 V CAT III PD2 application limit before finalizing procurement orders.

Current Sense Transformers Selection Notes

Select this component when accurate measurement of AC currents up to 100 A is required in industrial settings. The split-core architecture is essential for retrofits or installations where breaking the primary circuit is not feasible. Consider the 333 mV output ratio for signal conditioning interface compatibility. Verify environmental constraints against the specified operating temperature range and insulation categories to ensure reliable performance in the target electrical system.

Current Sense Transformers Part Context

This model belongs to the ATO series of split-core current transformers from LEM USA Inc., which are engineered for general-purpose AC current sensing. The series encompasses various rated primary currents, including 60 A, 63 A, 75 A, 100 A, and 125 A variants. These devices are characterized by their ability to provide isolated measurement signals while maintaining high precision and low phase displacement across standard utility frequencies.

Current Sense Transformers Replacement Considerations

Direct substitutes include other ATO series models with different primary current ratings such as ATO-60-B333-D16, ATO-75-B333-D16, ATO-125-B333-D16, or ATO-63-B333-D16, provided the measured current range aligns with the new rating. Cross-brand replacements require matching the split-core aperture size, 333 mV output ratio, and 50/60 Hz frequency operation.