855-5105/400-001

Current Sense Transformers Overview

The WAGO 855-5105/400-001 is a split-core current transformer designed for retrofitting existing electrical systems. It features a primary rated current of 400 A and a secondary rated current of 5 A. The device has a rated power of 0.5 VA and an accuracy class of 1. This compact component allows for rapid mounting in confined spaces, making it suitable for industrial automation and energy measurement applications where non-intrusive current monitoring is required.

Current Sense Transformers Feature Summary

• Split-core design enables installation around existing busbars or cables without disconnecting the circuit.
• Compact form factor facilitates use in very confined spaces within control cabinets.
• Supports rapid mounting to simplify integration into existing electrical infrastructure.

Current Sense Transformers Applications

• Retrofitting existing electrical systems for current monitoring
• Industrial automation energy measurement
• Process engineering current sensing

Current Sense Transformers Procurement Notes

Verify that the specific part number matches the required primary current rating of 400 A and secondary output of 5 A. Confirm the accuracy class of 1 meets project specifications. Ensure the split-core mechanism is compatible with the diameter of the conductor being monitored. Check for RoHS compliance requirements if applicable to the deployment environment.

Current Sense Transformers Selection Notes

Select this model when a non-invasive solution is needed for measuring currents up to 400 A. The 0.5 VA burden capacity should be sufficient for standard metering devices. Consider the physical dimensions to ensure fit within the available space. The split-core architecture is preferred over solid-core types for maintenance-friendly installations.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 series of current transformers. The series offers various primary current ratings, such as 300 A and 500 A, to suit different load requirements. All models share the split-core design philosophy for easy retrofitting. The 855 series is intended for general industrial and process automation applications requiring reliable current feedback.

Current Sense Transformers Replacement Considerations

Direct substitutes include other WAGO 855 series models with matching electrical characteristics. For example, the 855-5105/500-001 offers a 500 A primary rating but shares the same 5 A secondary output and 0.5 VA burden. Verify that the alternative part number supports the same accuracy class and physical conductor size before substitution.