Eaton AJ78 Back Box - 200A, 2-1/2in Cast Aluminum
Part Number: AJ78
Quick Summary
AJ78 back box from Eaton provides a rugged 200A back box for industrial electrical enclosures. Engineers often wrestle with installation flexibility, limited access, and challenging cable routing in tight panels, which can drive costly downtime. Area classification notes Ordinary/Non-Hazardous Locations, with durable cast aluminum construction that resists corrosion in typical factory environments. The AJ78 delivers robust mounting, predictable conduit entry, and long-term cost efficiency by reducing installation time, compatibility issues, and the need for frequent replacements. This combination supports faster commissioning and safer, compliant installations for panel builders and maintenance teams.
Product Information
Extended Description
AJ78 Eaton Crouse-Hinds: Eaton Crouse-Hinds series AJ back box, 200A, One hub, Cast aluminum, 2-1/2"
Product Name
Eaton Crouse-Hinds series AJ back box
Catalog Number
AJ78
Product Length/Depth
8 in
Product Height
10.75 in
Product Width
9.88 in
Product Weight
8.35 lb
UPC
782274029306
Area classification
Ordinary/Non-Hazardous Locations
Trade size
2-1/2"
Amperage Rating
200A
Back box style
One hub
Material
Cast aluminum
200A service capability and a 2-1/2 inch trade size position the AJ78 as a primary back box for feeder and control circuits. This capability reduces the need for multiple enclosures or adapters, saving installation time and space in panel layouts. Ideal for industrial enclosures serving motors, soft starters, and power distribution in machine rooms. Cast aluminum provides robust durability and corrosion resistance while keeping weight practical for field crews. In environments with frequent cleaning or exposure to particulates, the material supports long service life. Having a single hub simplifies conduit routing, minimizes sealing points, and speeds assembly. In finite panel spaces, this reduces misalignment and simplifies terminations. 8 in length, 10.75 in height, 9.88 in width, and 8.35 lb weight offer a balance of capacity and handling ease. Compact yet roomy enough for splices and terminations while maintaining service access. This translates to easier handling during installation and reallocations. The AJ78 is suited for ordinary locations per classification, aligning with common industrial environments. This reduces extra compliance costs and accelerates project approvals. Designed to integrate with standard enclosure systems and conduit fittings, the AJ78 supports faster commissioning and reduced maintenance across panel builds.
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FAQs
The AJ78 back box excels in industrial electrical enclosures requiring a 200A capacity with a 2-1/2 inch trade size. It supports feeder and control circuits in factory panels, motor control centers, and other non-hazardous environments where robust protection and reliable terminations are critical. Its one hub design simplifies conduit entry, reducing complexity in tight spaces.
AJ78 offers a compact, cast aluminum back box with a single hub that minimizes mounting points and conduit entries. Its measurements provide ample space forTerminations while keeping the enclosure footprint manageable, which speeds assembly, reduces commissioning time, and lowers maintenance intervals by enabling faster access and fewer reworks during upgrades.
AJ78 is specified for Ordinary/Non-Hazardous Locations, aligning with common industrial environments. While it does not list alternative certifications here, its material and construction are designed to withstand routine factory conditions, contributing to predictable compliance outcomes and reduced validation effort for standard panel installations.
Key specifications for AJ78 include a 200A amperage rating, 2-1/2 inch trade size, one hub back box style, cast aluminum material, and dimensions of 8 in length, 10.75 in height, 9.88 in width, with a weight of 8.35 lb. The UPC is 782274029306, and the catalog number is AJ78, which aids in procurement and BOM alignment.
AJ78 mitigates installation challenges by offering a durable cast aluminum back box with a single hub, simplifying conduit routing and terminations in tight spaces. Its defined dimensions, weight, and 200A rating help ensure a predictable fit within standard enclosures, reducing rework, improving uptime, and lowering total cost of ownership for panel builds and maintenance projects.