855-405/400-509

Current Sense Transformers Overview

The WAGO 855-405/400-509 is a plug-in current transformer designed for non-invasive current sensing applications. It features a solid core construction with a primary rated current of 400 A and a secondary output of 5 A. The device operates within a frequency range of 50 Hz to 60 Hz and utilizes chassis mounting for secure installation. This component facilitates accurate energy metering and monitoring in electrical systems requiring transformer connection capabilities.

Current Sense Transformers Feature Summary

• Non-invasive solid core design for direct wire insertion
• Plug-in configuration simplifies installation and maintenance
• Chassis mount style ensures stable physical positioning

Current Sense Transformers Applications

• Energy metering systems with transformer connections
• Industrial power monitoring circuits
• Electrical distribution panel instrumentation

Current Sense Transformers Procurement Notes

Verify the specific item number against official WAGO documentation to ensure compatibility with existing metering infrastructure. Confirm that the 400 A primary rating and 5 A secondary output align with the target application's electrical requirements. Check for any regional compliance declarations or environmental product compliance statements required for the intended deployment location.

Current Sense Transformers Selection Notes

Select this model when a non-invasive current measurement solution is required for conductors up to 400 A. Ensure the operating frequency matches the system's 50 Hz or 60 Hz standard. Consider the chassis mounting requirement and available space for the solid core diameter when integrating into control panels or switchgear assemblies.

Current Sense Transformers Part Context

This component belongs to the WAGO current sense transformer series, which provides reliable signal isolation for measurement devices. It serves as an interface between high-current power lines and low-current metering inputs, enabling safe and accurate data acquisition without breaking the primary circuit.