Eaton Crouse-Hinds UNY406 Union - Group B Rated
Part Number: UNY406
Quick Summary
UNY406 union from Eaton Crouse-Hinds delivers a rugged conduit connection for hazardous locations. Engineers and procurement teams often struggle to maintain enclosure integrity and electrical continuity in harsh industrial environments. This union is NEC/CEC compliant for hazardous areas and carries UL explosionproof certification, with area classifications covering Class I Division 1 and 2, Class II Division 1 and 2, and Class III. Designed for rigid/IMC conduit in a 1-1/4 inch trade size, UNY406 offers straightforward installation, predictable performance, and reduced field maintenance—helping projects stay on schedule and under budget. Its solid Feraloy iron alloy body resists impact and wear in demanding facilities.
Product Information
Extended Description
UNY406 Eaton Crouse-Hinds: Eaton Crouse-Hinds series UNY union, Rigid/IMC, Male, Feraloy iron alloy, Group B rated, 1-1/4"
Product Name
Eaton Crouse-Hinds series UNY union
Catalog Number
UNY406
UPC
782274070223
Product Length/Depth
3.72 in
Product Height
2.94 in
Product Width
2.94 in
Product Weight
2 lb
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class I, Division 2 Class II, Division 1 Class II, Division 2 Class III
Conduit type
Rigid/IMC
Gender
Male
Material
Feraloy iron alloy
Trade size
1-1/4"
Special features
Group B rated
Crouse-Hinds series Explosionproof Conduit Unions, Elbows and Tees catalog page
Explosionproof Conduit Unions, Elbows and Tees UL certification
Explosionproof Conduit Unions, Elbows and Tees UL certification
Eaton Specification Sheet - UNY406
Feraloy iron alloy body provides exceptional strength and corrosion resistance in flameproof environments, delivering longer service life and lower maintenance costs. In hazardous locations, this translates to fewer field failures and tighter project budgets, especially during start-up and commissioning of new plants. The conduit union is compatible with rigid/IMC systems, ensuring quick, precise fit and reducing misalignment or rework during installation. Group B rated construction supports safer operation in environments with hydrogen or similar fuels, lowering risk and enabling compliance with strict process safety standards. With a 1-1/4" trade size, 3.72" length, and 2" width/height, the unit is straightforward to handle in tight installations, minimizing accessory needs and inventory complexity. The unit’s UL explosionproof certification and NEC/CEC compliance provide peace of mind for ongoing maintenance and audits, while its rugged design integrates smoothly with existing Eaton Crouse-Hinds unions and standard fittings.
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FAQs
Yes. The UNY406 is specifically designed for rigid/IMC conduit systems and uses a male connection in a 1-1/4" trade size to ensure a tight, vibration-resistant seal in hazardous locations.
The UNY406 carries NEC/CEC compliance for hazardous locations, UL explosionproof certification, and area classifications across Class I Division 1 and 2, Class II Division 1 and 2, and Class III, supporting safe operation in demanding environments.
Length is 3.72 inches, width and height are 2.94 inches each, and the unit weighs 2 pounds, making it straightforward to handle during installation and maintenance.
Best for hazardous-location installations such as chemical plants, refineries, mining operations, and other facilities requiring explosionproof, Group B rated conduit unions with rigid/IMC compatibility.
Its Group B rating, rugged Feraloy iron alloy body, and precise rigid/IMC fit reduce field adjustments, improve durability, and lower maintenance calls, leading to quicker, more reliable project commissioning.