855-301/050-103

Current Sense Transformers Overview

The WAGO 855-301/050-103 is a plug-in current transformer designed for electrical measurement applications. It features a primary rated current of 50 A and a secondary rated current of 1 A, providing a current ratio of 50:1. The device operates within a frequency rating of 50 to 60 Hz and has a rated power of 1.25 VA. It adheres to accuracy class 3 standards as per IEC 60044-1 (DIN EN 60044-1). The unit utilizes E-class insulation and is constructed for chassis mounting with dimensions of approximately 26 mm.

Current Sense Transformers Feature Summary

• Pluggable design allows for easy installation and replacement without disconnecting primary conductors
• Vibration- and shock-resistant construction ensures mechanical stability in industrial environments
• High mechanical retention forces secure the component firmly during operation

Current Sense Transformers Applications

• Electrical energy metering systems
• Industrial process control monitoring
• Power distribution panel instrumentation

Current Sense Transformers Procurement Notes

Verify that the required primary current matches the 50 A specification and that the secondary load does not exceed the 1.25 VA rated power. Confirm compatibility with the target chassis mounting configuration and ensure the operating frequency aligns with the 50 to 60 Hz range. Check for any specific accuracy class requirements relative to application standards.

Current Sense Transformers Selection Notes

Select this model when a pluggable solution is required for 50 A primary circuits with a 1 A secondary output. Consider the 26 mm form factor for space-constrained panels. Ensure the application environment supports E-class insulation ratings and meets the mechanical vibration resistance criteria specified for the 855 series.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 series of plug-in current transformers. The series is characterized by its modular design, allowing for quick integration into existing electrical setups. The 855-301/050-103 variant specifically addresses medium-current measurement needs with standardized secondary outputs suitable for common industrial meters and relays.

Current Sense Transformers Replacement Considerations

Direct substitutes must match the 50:1 ratio, 50 A primary, and 1 A secondary specifications. Verify physical dimensions and mounting style compatibility. Alternative models from the same manufacturer or other brands should be evaluated based on identical accuracy class and rated power constraints.