A3003YZHM

Overview

The Hoffman A3003YZHM is a large-volume Type Y and Z purging and pressurization system designed for horizontal mounting. It supplies protective gas to one or more enclosures with a total volume of up to 90 cubic feet. The unit features a face plate and mounting plate constructed from Type 316L stainless steel, ensuring durability in harsh environments. Overall dimensions are 10.75 inches in width, 5.5 inches in height, and 5.5 inches in depth. It carries NEMA 4/12 ratings.

Feature Summary

• Horizontal mounting configuration for space-constrained installations
• Constructed with Type 316L stainless steel face and mounting plates
• Supports purging and pressurization for multiple enclosures

Applications

• Purging hazardous area enclosures
• Pressurizing control cabinets in explosive atmospheres
• Protecting electrical components from corrosive gases

Procurement Notes

Verify the specific model suffix HM confirms horizontal mounting orientation. Confirm that the 90 cubic foot capacity aligns with the total internal volume of the target enclosure(s). Ensure compatibility with the required purge gas supply pressure and flow rates for the specific application environment.

Selection Notes

Select this model when horizontal installation is required for large enclosures exceeding standard volume limits. The 316L stainless steel construction is suitable for corrosive environments where standard materials may degrade. Verify that the total enclosure volume does not exceed 90 cubic feet to ensure effective pressurization.

Part Context

This component belongs to the nVent Hoffman HL Series, which specializes in large-volume purging solutions. The 'Y' and 'Z' designations refer to specific UL 508A compliance types for purged and pressurized enclosures. The series provides safety for equipment operating in Class I, Division 1 or 2 hazardous locations.

Replacement Considerations

Direct substitutes must match the horizontal mount configuration and 90 cubic foot capacity. Verify that any replacement maintains the 316L stainless steel construction and NEMA 4/12 rating. Cross-reference UL 508A Type Y/Z certification requirements.