855-3001/125-003

Current Sense Transformers Overview

The WAGO Corporation model 855-3001/125-003 is a split-core current transformer designed for electrical monitoring applications. It features a primary rated current of 125 A and a secondary rated current of 1 A, ensuring accurate signal conversion for measurement devices. The unit provides a rated power capacity of 0.2 VA with an accuracy class of 3, suitable for standard industrial requirements. Operating within a frequency range of 50 Hz to 60 Hz, this component utilizes a chassis mount configuration for secure installation. The split-core design facilitates non-intrusive integration into existing electrical circuits without requiring cable disconnection.

Current Sense Transformers Feature Summary

• Split-core construction enables installation around existing conductors without circuit interruption
• Chassis mount design ensures stable physical positioning in control panels
• Provides standardized 1 A secondary output compatible with common metering equipment

Current Sense Transformers Applications

• Industrial energy monitoring systems
• Electrical panel current measurement
• Power quality analysis instrumentation

Current Sense Transformers Procurement Notes

Verify that the specific part number matches the required primary current rating of 125 A before ordering. Confirm compatibility with the target secondary load impedance to ensure the 0.2 VA rating is not exceeded. Check that the mounting environment supports the chassis mount style. Ensure the operating frequency aligns with the 50 Hz or 60 Hz specification. Review official documentation for any updates regarding accuracy class definitions.

Current Sense Transformers Selection Notes

Select this component when a non-invasive measurement solution is required for currents up to 125 A. The split-core architecture is preferred over solid-core types where retrofitting or frequent access is necessary. Consider the 0.2 VA burden capability when connecting to downstream meters or data acquisition modules. The chassis mount form factor dictates the available space within the enclosure. Verify that the accuracy class of 3 meets the precision requirements of the specific application.

Current Sense Transformers Part Context

This current transformer belongs to WAGO's series of split-core sensing components. These devices are engineered to interface with various monitoring and protection relays. The product line emphasizes ease of installation and reliable performance in industrial environments. This specific model represents a standard configuration for medium-current applications within the broader portfolio of electrical measurement tools offered by the manufacturer.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 125 A primary rating, 1 A secondary output, and split-core topology. Verify that alternative models support the same 0.2 VA rated power and accuracy class 3. Ensure the replacement also utilizes a chassis mount style for mechanical compatibility. Cross-reference specifications with official manufacturer cross-reference lists to confirm functional equivalence.