Eaton Crouse-Hinds UNF705 SA Union - Hazardous Location
Part Number: UNF705 SA
Quick Summary
UNF705 SA is a rugged conduit union designed for rigid/IMC systems in hazardous locations. Engineers often struggle with corrosion, weight, and misfit fittings when upgrading legacy conduit networks, leading to reliability concerns and costly rework. This unit meets NEC/CEC requirements and area classifications for Hazardous/Classified Locations, and it carries UL/CSA certifications for safe field installation. With copper-free aluminum construction and a 2-1/2 in trade size, it reduces weight on lifts and simplifies stocking while delivering reliable, code-compliant connections. Using UNF705 SA helps minimize maintenance cycles and supports safer, longer-lasting electrical installations across harsh environments.
Product Information
Extended Description
UNF705 SA Eaton Crouse-Hinds: Eaton Crouse-Hinds series UNF union, Rigid/IMC, Female, Copper-free aluminum, 2-1/2"
Product Name
Eaton Crouse-Hinds series UNF union
Catalog Number
UNF705 SA
UPC
782274101880
Product Length/Depth
3.13 in
Product Height
4.63 in
Product Width
4.63 in
Product Weight
2.2 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
Female
Material
Copper-free aluminum
Trade size
2-1/2"
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 - UNF705 SA
Copper-free aluminum construction provides excellent corrosion resistance and lighter weight, lowering handling risk and lifecycle costs in outdoor or chemical-processing environments. This translates to faster installation, reduced crane time, and fewer replacements due to moisture-driven degradation in exposed conduit runs. The 2-1/2 inch trade size fits common industrial systems, enabling seamless upgrades to existing rigid/IMC networks and helping to standardize parts across multiple projects. The female UNF union design accelerates field assembly with secure, leak-free connections, improving system reliability and reducing rework during maintenance. NEC/CEC compliance and Hazardous/Classified Location ratings give engineers confidence for Class I, II, and III installations, while UL/CSA certifications support regulatory approvals and downstream procurement. Lightweight, copper-free aluminum also eases inventory management and lowers shipping costs for widespread deployment in process plants and automated facilities. Compatibility with standard conduit fittings and Eaton Crouse-Hinds’ global catalog pages ensures quick sourcing and consistent performance across regions.
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FAQs
UNF705 SA is designed for rigid/IMC conduit with a female union. When installing in hazardous locations, ensure correct alignment with Class I, II, and III classifications and use compatible sealing methods as per NEC/CEC requirements. The copper-free aluminum construction resists corrosion, which minimizes maintenance interruptions in harsh environments. Proper torque and seal integrity should be verified during assembly to maintain explosion-protected performance and compliance.
UNF705 SA is specified to NEC/CEC standards for hazardous locations and area classifications. It is listed with UL/CSA certifications for explosionproof conduit unions, ensuring compliant installation in Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III environments. Procurement and field installation benefit from verifiable certificates and catalog references included in Eaton’s documentation.
Yes. UNF705 SA is engineered for rigid/IMC conduit and uses a 2-1/2 inch trade size, making it compatible with common rigid conduit layouts and retrofit projects. The female union design simplifies field assembly, while the copper-free aluminum construction provides durable support in demanding environments. This compatibility helps reduce project lead times and improve installed-system integrity.
UNF705 SA weighs 2.2 lb and has a length of 3.13 inches, with a width and height of 4.63 inches each. These dimensions offer manageable handling during installation and fit within standard mounting footprints in control panels and enclosures. Lighter weight also facilitates safer transport and reduces strain on mounting hardware in confined spaces.
Copper-free aluminum provides excellent corrosion resistance, critical for outdoor, chemical, or humid environments typical of hazardous locations. The material keeps weight down, lowering handling and installation costs, while maintaining mechanical strength for reliable, long-term connections. This choice supports lifecycle cost reduction and aligns with industry demands for durable, non-sparking, and lightweight conduit fittings.