AST3403R

Overview

The Hoffman Enclosures AST3403R is a Type 1 splitter trough designed for indoor electrical applications. Constructed from painted mild steel with a gray powder-coated finish, it measures 36 inches in length, 10 inches in width, and 6 inches in depth. The unit features a standard hinge and no latch mechanism. It is rated to handle 400A on three wires, facilitating the splitting of feeder circuit conductors into multiple branch circuits.

Feature Summary

• Facilitates splitting of feeder circuit conductors into multiple branch circuits
• Constructed from painted mild steel with a gray powder-coated finish
• Designed specifically for indoor installation environments

Applications

• Splitting feeder circuit conductors into multiple branch circuits
• Indoor electrical distribution systems requiring Type 1 protection
• Industrial control panels accommodating 400A three-wire configurations

Procurement Notes

Verify that the application environment is strictly indoor, as this Type 1 enclosure lacks weatherproofing seals required for outdoor use. Confirm that the 36-inch section length aligns with spatial constraints within the panel or junction box assembly. Ensure compatibility with pre-installed terminal blocks if specified in system design documents.

Selection Notes

Select this model when a dedicated splitter trough is required for high-current (400A) three-wire feeder distribution. The Type 1 rating limits usage to clean, dry indoor areas free from dust and water exposure. Consider the 6-inch depth for adequate wire bending radius and terminal access during installation.

Part Context

This component belongs to the Hoffman AST series of splitter troughs, which are specialized enclosures used to manage complex wiring configurations. Unlike standard junction boxes, these troughs are engineered specifically for distributing power from a single feeder source to multiple downstream branch circuits, simplifying cable management in large industrial setups.

Replacement Considerations

No public confirmed substitute part numbers are available in the provided documentation.