855-4001/125-001

Current Sense Transformers Overview

The WAGO 855-4001/125-001 is a split-core current transformer designed for chassis mounting. It features a primary rated current of 125 A and a secondary rated current of 1 A. The device has a rated power of 0.2 VA and an accuracy class of 1. It operates within a frequency range of 50 Hz to 60 Hz. This component is engineered for retrofitting existing electrical systems, providing reliable current sensing capabilities in compact form factors suitable for industrial applications.

Current Sense Transformers Feature Summary

• Split-core design facilitates installation on existing busbars without disconnecting conductors
• Chassis mount configuration ensures secure positioning within control panels
• Compact construction supports integration into space-constrained electrical enclosures

Current Sense Transformers Applications

• Retrofitting existing electrical distribution systems
• Current monitoring in industrial control panels
• Energy management system installations

Current Sense Transformers Procurement Notes

Verify the specific part number suffix matches the required primary current rating of 125 A. Confirm that the chassis mount style aligns with panel layout requirements. Ensure the 0.2 VA burden capacity meets downstream metering or protection device specifications before finalizing procurement orders.

Current Sense Transformers Selection Notes

Select this model when non-intrusive installation on fixed conductors is required. The split-core architecture eliminates the need to break circuits during deployment. Consider the 125 A primary rating to ensure adequate headroom for peak load conditions while maintaining Class 1 accuracy standards for measurement integrity.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 Series of current transformers. The series offers various primary current ratings to suit different load profiles. The 855-4001 variant specifically denotes the split-core mechanical design optimized for retrofit scenarios where permanent wiring modifications are impractical or prohibited.

Current Sense Transformers Replacement Considerations

Direct substitutes include other WAGO 855 series split-core models with identical 125 A primary ratings. Verify mechanical dimensions and mounting hole patterns match existing panel cutouts. Cross-reference secondary output specifications to ensure compatibility with connected instrumentation.