1075388

Overview

The Phoenix Contact 1075388 is a test disconnect terminal block from the USST series, designed for current transformer circuits. It features a screw connection with spring support and operates at a nominal voltage of 1000 V with a nominal current of 41 A. The unit accommodates wire cross-sections ranging from 2 mm² to 6 mm² (8-24 AWG) and utilizes a single-level configuration. It is compatible with NS35/7.5, NS35/15, and NS32 DIN rails.

Feature Summary

• Integrates screw connection technology with spring support for secure wiring
• Provides dedicated test disconnect functionality for current transformer applications
• Supports multiple standard DIN rail mounting types including NS35/7.5 and NS35/15

Applications

• Current transformer circuit monitoring
• Electrical panel instrumentation testing
• Industrial control system safety isolation

Procurement Notes

Verify the specific suffix designation against official Phoenix Contact documentation to ensure correct insulation class and voltage rating compliance. Confirm that the required DIN rail profile matches the component's mounting specifications before procurement to avoid installation incompatibilities.

Selection Notes

Select this model when high-voltage isolation and safe testing access are required in current transformer loops. Ensure the application voltage does not exceed 1000 V and the current load remains within the 41 A limit. Verify compatibility with existing DIN rail infrastructure and wire gauge requirements.

Part Context

This component belongs to the USST series of test disconnect terminal blocks manufactured by Phoenix Contact. These devices are engineered specifically for electrical measurement systems, allowing technicians to safely interrupt secondary circuits without de-energizing primary equipment. The series emphasizes reliability in industrial automation environments.

Replacement Considerations

Consult official Phoenix Contact substitution guides for verified equivalents. Generic terminal blocks may lack the specific test disconnect mechanism or voltage ratings required for safe current transformer operation.

FAQ

What is the maximum nominal current for this terminal block?

The nominal current rating is 41 A.

Which DIN rails are compatible with this component?

It supports NS35/7.5, NS35/15, and NS32 mounting profiles.