ATO-63-B333-D10/SP100

Current Sense Transformers Overview

The ATO-63-B333-D10/SP100 is a current sense transformer manufactured by LEM USA Inc., designed for the electronic measurement of AC waveform currents. It features a split core construction with a nominal primary current rating of 63 A and operates within a frequency range of 50 Hz to 60 Hz. The device provides galvanic separation between the primary power circuit and the secondary measurement circuit, ensuring safety and signal integrity. It utilizes a chassis mount configuration with physical dimensions of 1.319 inches in length, 1.260 inches in width, and a height of 1.791 inches (33.50 mm x 32.00 mm x 45.50 mm). This component is engineered for robust performance in industrial environments requiring reliable current monitoring.

Current Sense Transformers Feature Summary

• Split core design facilitates installation around existing conductors without disconnecting the primary circuit.
• Galvanic isolation ensures electrical safety between high-power primary circuits and low-voltage secondary measurement systems.
• Chassis mount packaging provides secure mechanical stability for integration into control panels or switchgear.
• Optimized for accurate electronic measurement of AC waveforms within standard utility frequencies.

Current Sense Transformers Applications

• Industrial motor drive current monitoring
• Power supply output current sensing
• AC/DC converter input current measurement
• Uninterruptible power system (UPS) monitoring

Current Sense Transformers Procurement Notes

Verify that the specific suffix /SP100 aligns with your required mounting hardware or accessory kit specifications, as suffixes often denote specific packaging or accessory configurations rather than functional changes. Confirm that the 63 A nominal rating matches your maximum expected load current to ensure accurate measurement without saturation. Ensure the chassis mount footprint corresponds to your panel cutout requirements. Cross-reference the datasheet for secondary burden resistor recommendations to maintain linearity. Validate environmental ratings against your operating temperature conditions.

Current Sense Transformers Selection Notes

Select this model when a split-core solution is required for retrofitting or periodic inspection of AC current paths. The 63 A rating suits medium-power industrial loads. Consider the chassis mount form factor if space constraints favor a fixed installation over open-loop sensors. Evaluate the frequency response to ensure compatibility with the fundamental frequency of the application, noting that this unit is optimized for 50-60 Hz operation. Compare physical dimensions against available panel space to confirm fitment before procurement.

Current Sense Transformers Part Context

This component belongs to the ATO series of current sense transformers from LEM USA Inc., which specializes in high-quality sensors for electrical parameter measurement. The ATO series is characterized by its split-core architecture, allowing for non-intrusive installation on busbars or cables. These transformers are widely used in industrial automation and power electronics where reliable, isolated current feedback is critical for control loops and protection schemes.

Current Sense Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. When evaluating alternatives, prioritize components with identical split-core geometry, 63 A nominal rating, and compatible mounting dimensions. Verify that replacement units offer equivalent galvanic isolation voltage ratings and frequency response characteristics to maintain system performance.