855-4001/100-001

Current Sense Transformers Overview

The WAGO 855-4001/100-001 is a split-core current transformer designed for electrical monitoring applications. It features a primary rated current of 100 A and a secondary rated current of 1 A, providing a 100:1 transformation ratio. The device operates at an accuracy class of 1 with a rated power of 0.2 VA. It supports frequency ranges from 50 Hz to 60 Hz and includes a 3 m cable length for connection. The unit has chassis mounting capabilities and measures 57.20 mm in length by 49.00 mm in width.

Current Sense Transformers Feature Summary

• Split-core design allows installation around existing conductors without disconnecting the circuit.
• Provides accurate current measurement with Class 1 accuracy rating.
• Integrated 3-meter cable facilitates direct connection to monitoring equipment.

Current Sense Transformers Applications

• Electrical energy metering systems
• Industrial power distribution monitoring
• Building management system current sensing

Current Sense Transformers Procurement Notes

Verify that the required primary current matches the 100 A specification before ordering. Confirm that the secondary load does not exceed the 0.2 VA rated power to maintain Class 1 accuracy. Ensure the operating frequency aligns with the 50 Hz to 60 Hz range. Check that the 3 m cable length meets the distance requirements between the transformer and the measuring device. Validate chassis mounting compatibility with the installation environment.

Current Sense Transformers Selection Notes

Select this model when a non-intrusive current measurement solution is required for circuits up to 100 A. The split-core architecture is suitable for retrofits where breaking the conductor is not feasible. Consider the 0.2 VA burden capacity when connecting to downstream devices. The fixed 3 m cable length may limit placement options compared to models with terminal blocks. Ensure the accuracy class 1 requirement is met for the specific application precision needs.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 series of current transformers. The series offers various primary current ratings, such as 75 A and 150 A, to accommodate different load levels. The 855-4001 variant specifically denotes the split-core configuration with integrated cabling. Other variants in the family may differ in accuracy class or physical dimensions while maintaining similar operational principles.

Current Sense Transformers Replacement Considerations

Direct substitutes include other WAGO 855 series split-core transformers with matching 100 A primary ratings. Verify that alternative models maintain the same 1:100 ratio and 0.2 VA burden capacity. Check if replacement units offer compatible cable lengths or require external wiring modifications. Ensure the accuracy class remains Class 1 if precision is critical for the application.