ASB403R

Overview

The Hoffman Enclosures ASB403R is a Type 1 splitter box constructed from steel with a gray finish. It measures 22 inches in length, 22 inches in width, and 6 inches in depth (559mm x 559mm x 152mm). The unit features a standard pull latch and hinge mechanism for the door. It is designed to split feeder circuit conductors into multiple branch circuits. The enclosure includes pre-installed terminal blocks suitable for three- and four-wire configurations.

Feature Summary

• Splits feeder circuit conductors into multiple branch circuit conductors
• Includes pre-installed terminal blocks for three- and four-wire applications
• Constructed from painted steel with a gray finish
• Features a single point ground lug and back mounting holes

Applications

• Splitting feeder circuit conductors into multiple branch circuits
• Indoor electrical distribution systems requiring NEMA Type 1 protection
• Applications utilizing three-wire or four-wire configurations

Procurement Notes

Verify that the application environment meets NEMA Type 1 requirements, as this enclosure is intended for indoor use only. Confirm that the physical dimensions of 22x22x6 inches fit the installation space. Ensure the electrical load does not exceed the rated capacities of the main lugs (400A) or branch lugs (285A). Check for compatibility with existing conduit knockouts, which include two 2-1/2 inch and three 3-1/2 inch entries.

Selection Notes

Select this model when indoor conductor splitting is required without environmental sealing. Compare against sealed enclosures if outdoor or washdown conditions are present. Verify that the 400A main rating and 285A branch rating align with the circuit design. Consider the steel construction and gray finish for aesthetic consistency with other equipment.

Part Context

This component belongs to the Hoffman splitter box series, designed for electrical distribution tasks. It serves as an intermediate distribution point between feeders and branch circuits. The product line typically includes various sizes and ratings to accommodate different current loads and spatial constraints within industrial and commercial electrical panels.

Replacement Considerations

Direct substitutes may include models from the same manufacturer with identical dimensions and ratings. Verify that any replacement maintains the 400A main and 285A branch lug ratings. Ensure the new unit supports the required wire configuration and knockout sizes.