855-305/300-509

Current Sense Transformers Overview

The WAGO 855-305/300-509 is a pluggable current sense transformer designed for chassis mounting. It features a primary rated current of 300 A and a secondary rated current of 5 A, providing a transformation ratio of 300:5. The device operates at frequencies between 50 Hz and 60 Hz with a rated power of 5 VA. It meets accuracy class 0.5 standards and has a width of 26 mm.

Current Sense Transformers Feature Summary

• Pluggable construction allows for easy installation and replacement on DIN rails or chassis.
• Non-invasive current sensing capability enables measurement without interrupting the electrical circuit.
• High accuracy class ensures reliable data for monitoring and protection applications.

Current Sense Transformers Applications

• Industrial power distribution systems
• Electrical panel metering
• Current monitoring in machinery

Current Sense Transformers Procurement Notes

Verify the specific item number against official WAGO documentation to ensure compatibility with existing infrastructure. Confirm that the required primary current rating matches the application load. Check for RoHS compliance status if environmental regulations apply. Ensure the mounting environment supports the specified chassis mount design.

Current Sense Transformers Selection Notes

Select this model when a 300 A primary current capacity is required with a standard 5 A secondary output. Consider the pluggable form factor for maintenance efficiency. Verify that the 5 VA burden capacity suits the connected measuring instruments. Ensure the operating frequency range aligns with the system's power supply characteristics.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 Series of plug-in current transformers. These devices are engineered for industrial interface modules and provide isolated current measurement solutions. The series offers various primary current ratings to suit different power levels while maintaining consistent physical dimensions and connection standards.

Current Sense Transformers Replacement Considerations

Direct substitutes include other WAGO models within the 855 series with matching 300 A primary ratings, such as 855-305/300-1000 variants if secondary configurations differ. Cross-brand replacements require verification of physical footprint, pinout compatibility, and electrical specifications.