855-4101/400-001

Current Sense Transformers Overview

The WAGO 855-4101/400-001 is a split-core current transformer designed for measuring alternating currents in the range of 50Hz to 60Hz. It features a primary rated current of 400 A and a secondary rated current of 1 A, ensuring accurate signal transmission for monitoring systems. The unit operates with a rated power of 0.2 VA and maintains an accuracy class of 1. It includes a 3-meter cable for flexible installation and utilizes a hinged chassis mount design that allows for rapid assembly without interrupting the primary conductor.

Current Sense Transformers Feature Summary

• Split-core construction enables measurement without breaking the primary circuit
• Hinged design facilitates rapid mounting on existing busbars or cables
• Compact form factor suitable for retrofitting into confined spaces

Current Sense Transformers Applications

• Retrofitting existing electrical distribution systems
• Current monitoring in industrial control panels
• Energy management and metering applications

Current Sense Transformers Procurement Notes

Verify the specific primary current rating matches the application requirement of 400 A before procurement. Confirm that the secondary burden does not exceed the 0.2 VA limit to maintain Class 1 accuracy. Ensure the mounting space accommodates the physical dimensions and the 3-meter output cable length for proper routing.

Current Sense Transformers Selection Notes

Select this model when non-intrusive installation is required for high-current AC measurements. Compare against other variants in the 855 series based on primary current ratings such as 200 A or 250 A if lower capacity suffices. Consider the fixed 3-meter cable length and 1 A secondary output when designing the downstream signal conditioning circuitry.

Current Sense Transformers Part Context

This component belongs to the WAGO 855 series of compact split-core current transformers. The series offers various primary current ratings including 200 A and 250 A models, all sharing similar hinged mechanical designs and Class 1 accuracy standards. These units are engineered specifically for easy integration into existing infrastructure where traditional toroidal transformers would require costly system downtime.

Current Sense Transformers Replacement Considerations

Direct substitutes within the same product line include the 855-4101/200-001 and 855-4101/250-001. These alternatives share identical mechanical housing, accuracy class, and secondary specifications but differ in primary current capacity. Verify that the lower current ratings of these substitutes do not saturate under maximum load conditions.