855-301/250-501

Current Sense Transformers Overview

The WAGO 855-301/250-501 is a plug-in current transformer designed for electrical measurement applications. It features a primary rated current of 250 A and a secondary rated current of 1 A, providing a transformation ratio of 250:1. The device supports a frequency rating of 50 to 60 Hz and has a rated power of 5 VA. It meets accuracy class 1 standards as defined by standard 4050821616887. The unit utilizes E-class insulation and is intended for chassis mounting within industrial control systems.

Current Sense Transformers Feature Summary

• Plug-in design facilitates easy installation and replacement in existing setups
• High precision accuracy class 1 ensures reliable current measurement data
• Robust E-class insulation provides safety and durability in industrial environments

Current Sense Transformers Applications

• Industrial control panels requiring precise current monitoring
• Electrical distribution systems for load balancing and protection
• Energy management solutions for consumption tracking

Current Sense Transformers Procurement Notes

Verify the specific part number suffix against official WAGO documentation to ensure compatibility with required primary current ratings and secondary output specifications. Confirm that the application environment aligns with the 50 to 60 Hz frequency rating and 5 VA burden capacity. Ensure proper chassis mounting provisions are available for secure installation.

Current Sense Transformers Selection Notes

Select this model when a 250 A primary current rating is required with a 1 A secondary output. Consider the 5 VA rated power limit to ensure connected meters or relays do not exceed the burden capacity. Verify that the plug-in form factor suits the available DIN rail or panel space constraints compared to split-core alternatives.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 Series of plug-in current transformers. The series offers various primary current options, including 150 A and 300 A variants, all sharing similar physical dimensions and mounting characteristics. The 855-301 designation specifically identifies the 250 A primary current configuration within this standardized product line.

Current Sense Transformers Replacement Considerations

Direct substitutes include other WAGO 855 series units with identical mechanical footprints but different current ratios, such as the 855-301/150-501 for lower current applications. Cross-brand replacements require verification of mounting dimensions, accuracy class, and burden capacity to ensure functional equivalence.