855-305/050-103

Current Sense Transformers Overview

The WAGO 855-305/050-103 is a plug-in current transformer designed for AC network monitoring. It features a primary rated current of 50 A and a secondary rated current of 5 A, providing a 50:5 turns ratio. The device operates within a frequency range of 50 to 60 Hz and has a rated power of 1.25 VA. It meets accuracy class 3 standards and utilizes cage clamp technology for secure connections. The unit is constructed with E-class insulation and is intended for chassis or DIN rail mounting applications.

Current Sense Transformers Feature Summary

• Plug-in design for easy installation on standard rails
• Cage clamp connection technology for reliable wiring
• Solid core construction for AC current sensing
• Class 3 accuracy rating for measurement applications

Current Sense Transformers Applications

• AC network current monitoring
• Industrial control panel integration
• Energy metering systems
• Protection relay input circuits

Current Sense Transformers Procurement Notes

Verify the complete part number including the suffix -103 to ensure correct secondary current and configuration. Confirm that the application requires a 50 A primary and 5 A secondary output. Check for compatibility with existing DIN rail mounting systems. Ensure the operating frequency matches the system's 50 or 60 Hz requirement. Validate insulation class requirements against safety standards.

Current Sense Transformers Selection Notes

Select this component when a pluggable solution is required for 50 A AC current measurement. Consider the 1.25 VA burden capacity for connected loads. Evaluate the need for Class 3 accuracy versus higher precision classes. Assess space constraints for the 26 mm width dimension. Verify compatibility with downstream devices accepting 5 A secondary inputs.

Current Sense Transformers Part Context

This model belongs to the WAGO 855 Series of current transformers. The series offers various primary current ratings and configurations. These components are designed for industrial automation and electrical distribution environments. They provide isolated current sensing for monitoring and protection purposes.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 50:5 ratio, 50 A primary, and 5 A secondary specifications. Verify identical mounting style and terminal type compatibility. Ensure equivalent accuracy class and burden capacity. Confirm physical dimensions fit existing enclosures.