Eaton Crouse-Hinds ECLK521 Explosionproof Coupling - Class I
Part Number: ECLK521
Quick Summary
Eaton Crouse-Hinds ECLK521 explosionproof coupling is a rugged conduit connection designed for hazardous locations. In harsh facilities, misfit fittings and leaking seals create downtime, safety risk, and costly maintenance. This product meets NEC/CEC requirements and is rated for Class I, Division 1, with additional Canadian certification support for use in hazardous environments. By combining a 1-1/2" trade size, forged brass construction, and a 21" flexible length, it delivers reliable mechanical integrity while simplifying installation. The result is lower lifecycle costs, improved safety, and consistent performance across demanding industrial applications.
Product Information
Extended Description
ECLK521 Eaton Crouse-Hinds: Eaton Crouse-Hinds series ECLK coupling, 21" flexible length, Male connection one end, female connection one end, Forged brass, 1-1/2" trade size
Product Name
Eaton Crouse-Hinds series ECLK coupling
Catalog Number
ECLK521
Product Length/Depth
27.63 in
Product Height
3.5 in
Product Width
3.5 in
Product Weight
17.81 lb
UPC
782274263502
Area classification
Hazardous/Classified Locations
Standards type
NEC/CEC
NEC hazardous rating
Class I, Division 1 Class II, Division 1 Class III
Gender
Male connection one end, female connection one end
Flexible length
21"
Trade size
1-1/2"
Material
Forged brass
Crouse-Hinds series EC Explosionproof Couplings catalog page
EC Explosionproof Couplings Canadian certification
EC Explosionproof Couplings Canadian certification
Eaton Specification Sheet - ECLK521
21" flexible length simplifies routing around equipment, reducing the number of additional fittings and field assembly time. This translates to measurable labor savings and lower installation risk in tight industrial spaces. Application: conveyors, pumps, and motor control centers in hazardous areas. Forged brass construction provides corrosion resistance and mechanical strength essential in chemical, oil, and marine environments. The durable material helps maintain seal integrity under vibration and temperature swings, lowering replacement frequency. Use: hazardous locations with aggressive atmospheres require robust fittings to prevent leaks. The 1-1/2" trade size with male/female ends supports fast, compatible mating with standard conduits and connectors, reducing precision alignment issues and enabling quicker panel installs. Compatibility with common conduit systems minimizes inventory complexity and accelerates commissioning in new builds or retrofits. NEC/CEC compliance and Hazardous Location ratings Class I, Division 1 (and related Class II/III coverage) provide regulatory confidence, while Canadian certification references support cross-border projects. This coupling also benefits maintenance programs by offering a durable, easy-to-service connection that withstands vibration and temperature variations. 27.63" product length and 3.5" width/height contribute to robust mechanical integrity, ensuring reliable operation in demanding environments.
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FAQs
To install, align the 1-1/2" trade size male and female ends and connect to compatible conduit fittings. Ensure the assembly is suitable for hazardous locations per NEC/CEC guidance and verify all seals are intact. The 21" flexible section accommodates routing around equipment, reducing the number of fittings and labor time while maintaining required certifications.
ECLK521 is rated for Hazardous/Classified Locations with NEC/CEC compliance and Class I, Division 1. Canadian certification references are available in UL-listed materials, supporting use in hazardous environments across North America.
Yes. The forged brass construction, 21" flexible length, and 1-1/2" trade size are designed for demanding environments found in chemical processing, oil and gas, and marine applications, with appropriate hazardous-location ratings and cross-border certifications.
Expect NEC/CEC compliance with Class I, Division 1 ratings, and recognition for hazardous locations. Additional Canadian certifications are referenced through UL documentation. These certifications support regulatory adherence and safer operation in high-risk facilities.
The rugged forged brass construction resists corrosion and vibration, reducing replacement frequency and maintenance costs. The 21" flexible length simplifies installation, accelerating commissioning and enabling long-term lifecycle efficiency in hazardous-area projects.