Eaton Crouse-Hinds EIH21 2 Instrument Enclosure - Hazardous
Part Number: EIH21 2
Quick Summary
The Eaton Crouse-Hinds EIH21 2 instrument enclosure protects hazardous-location control gear in industrial facilities. When space is tight and regulatory compliance is non-negotiable, you need rugged, compliant enclosures that install quickly. It carries NEC/CEC compliance and NEC hazardous ratings for Class I, Class II, and Class III locations, plus versatile NEMA ratings 3, 4, 4X, 7, 9 to match your environment. Copper-free aluminum keeps weight manageable and resists corrosion, while an external 3/4 inch drilled and tapped boss adds wiring flexibility for panel builders.
Product Information
Extended Description
EIH21 2 Eaton Crouse-Hinds: Eaton Crouse-Hinds series EIH instrument enclosure, 2" cover opening, Glass cover, Copper-free aluminum, Additional 3/4" drilled and tapped opening in external boss, 3/4" trade size
Product Name
Eaton Crouse-Hinds series EIH instrument enclosure
Catalog Number
EIH21 2
Product Length/Depth
5.25 in
Product Height
4.54 in
Product Width
5.25 in
Product Weight
3.32 lb
UPC
782274785158
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
NEMA Rating
3 4 4X 7 9
Trade size
3/4"
Cover type
Glass
Cover opening size
2 in
Material
Copper-free aluminum
Special features
Additional 3/4" drilled and tapped opening in external boss
Crouse-Hinds series EIH and EIHT Explosionproof Instrument Enclosures catalog page
EIH and EIHT Explosionproof Instrument Enclosures UL certification (Enclosures)
EIH and EIHT Explosionproof Instrument Enclosures UL certification (Enclosures)
EIH and EIHT Explosionproof Instrument Enclosures UL certification (Enclosures)
IF 1179 - EIH/EIHT Instrument Enclosure
IF 1179 - EIH/EIHT Instrument Enclosure
Eaton Specification Sheet - EIH21 2
Copper-free aluminum construction delivers strong corrosion resistance with reduced weight, improving overall site handling and long-term lifecycle costs while preserving structural integrity in chemical and offshore environments. This translates to easier manual handling, lower crane/rigging needs, and reduced maintenance exposure for outdoor installations. The glass cover provides clear visibility of process indicators and status without removing the enclosure, streamlining operator checks and reducing downtime in critical operations. A 2 inch cover opening supports standard instrumentation and access points, enabling faster integration and commissioning during control-system upgrades. The external 3/4 inch drilled and tapped opening on the external boss offers flexible conduit and accessory mounting, cutting field-wabrication time and preventing last-minute wiring changes. The 3/4 inch trade size aligns with common fittings, simplifying procurement and installation. NEC/CEC and UL certifications ensure compliance across hazardous and industrial locations, while NEMA ratings 3, 4, 4X, 7, 9 guarantee rugged performance in demanding environments. These features collectively reduce project risk, shorten time-to-operation, and support predictable maintenance cycles for high-availability automation systems.
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FAQs
For hazardous locations, ensure the enclosure is mounted per NEC/CEC requirements and within the appropriate area classifications. Use the external 3/4 inch drilled and tapped boss for conduit entries and matching fittings. Confirm the 2 inch cover opening accommodates your instrumentation and maintain proper sealing, grounding, and enclosure access for maintenance.
Yes. The EIH21 2 is rated for Class I, Division 1 and 2, Class II, Division 1 and 2, and Class III locations. It carries NEC/CEC standards with UL certification references and is compatible with the listed NEMA ratings (3, 4, 4X, 7, 9), providing compliance across multiple hazardous-environment applications.
Key specs include copper-free aluminum construction, glass cover, 2 in cover opening, 3/4 in trade size, external 3/4 in drilled and tapped opening, and dimensions approximately 5.25 in L, 4.54 in H, 5.25 in W with a weight of 3.32 lb. The enclosure supports 3/4 in trade-sized fittings and offers NEC/CEC compliance for hazardous locations.
Copper-free aluminum reduces galvanic corrosion risk, especially in coastal or chemical environments, while maintaining structural strength. Its lighter weight eases handling during installation and reduces crane-time costs. The material choice also supports longer service intervals and lower maintenance expenses in harsh industrial settings.
Access Eaton’s installation sheets IF 1179, the EIH/EIHT instrumentation enclosure catalog, and UL certification pages for verified compliance. The official Eaton specification sheet provides exact dimensions and wiring guidelines, while installation instructions help with proper conduit, sealing, and mounting practices to meet hazardous-location requirements.