855-5001/400-000

Current Sense Transformers Overview

The WAGO Corporation 855-5001/400-000 is a split-core current transformer designed for chassis mounting. It features a primary rated current of 400 A and a secondary rated current of 1 A, providing a 400:1 current ratio. The device operates within a frequency range of 50 Hz to 60 Hz and maintains an accuracy class of 0.5. With a rated power of 0.5 VA (500 mVA) and IP20 protection, it includes a 5-meter cable length for connection. The unit measures approximately 66.20 mm by 66.00 mm and weighs 672 g, functioning reliably between -10°C and 55°C.

Current Sense Transformers Feature Summary

• Split-core design allows installation without disconnecting the primary conductor
• High accuracy class 0.5 ensures precise current measurement
• Integrated 5-meter cable facilitates remote signal transmission
• Chassis mount configuration supports secure industrial integration

Current Sense Transformers Applications

• Industrial energy monitoring systems
• Electrical distribution panel metering
• Power quality analysis equipment
• Automation system current sensing

Current Sense Transformers Procurement Notes

Verify that the required primary current does not exceed 400 A and that the load impedance remains within the 0.5 VA rating to maintain Class 0.5 accuracy. Confirm that the operating environment stays within the specified temperature range of -10°C to 55°C. Ensure the installation location provides adequate clearance for the 5-meter cable routing and chassis mounting hardware. Check for IP20 compliance requirements against environmental conditions.

Current Sense Transformers Selection Notes

Select this component when a non-intrusive measurement solution is required for conductors carrying up to 400 A at 50-60 Hz. The split-core architecture eliminates the need to interrupt the main circuit during installation. Consider the 1 A secondary output compatibility with downstream instrumentation. Evaluate the physical dimensions and weight constraints for the intended chassis mounting application.

Current Sense Transformers Part Context

This model belongs to the WAGO 855 Series, which specializes in current transformers for industrial applications. The series offers various primary current ratings and core types to suit different measurement needs. The 855-5001 variant specifically addresses high-current scenarios requiring reliable separation from the primary circuit while maintaining measurement integrity.

Current Sense Transformers Replacement Considerations

Public confirmed substitute part numbers are not available in the provided documentation. Verify compatibility with existing wiring configurations and secondary load requirements before considering alternative models.

Current Sense Transformers FAQ

What is the maximum primary current for this transformer?

The maximum primary rated current is 400 A.

Does this unit require opening the busbar for installation?

No, the split-core design allows installation around the existing conductor without disconnecting it.

What is the secondary output current rating?

The secondary rated current is 1 A.