Eaton Crouse-Hinds ECLK521 S758 coupling - Class I, Division 1
Part Number: ECLK521 S758
Quick Summary
The Eaton Crouse-Hinds ECLK521 S758 coupling is designed to connect explosion-proof conduit fittings for hazardous locations. In industrial environments, field replacements can be slow and risky due to hazardous locations and strict safety protocols. It carries NEC/CEC compliance with Class I, Division 1 ratings and UL certifications for both the US and Canada. The forged brass body with a flexible PVC coating offers durable performance, while the 1-1/2 in size and long flexible section simplify installations and maintenance, delivering reliable protection and easy adaptability in tight or challenging layouts.
Product Information
Extended Description
ECLK521 S758 Eaton Crouse-Hinds: 1-1/2 X 21 DIV 1 FLEX CPLG M-F NEO COATG
Product Name
Eaton Crouse-Hinds series ECLK coupling
Catalog Number
ECLK521 S758
Product Length/Depth
27.63 in
Product Height
3.5 in
Product Width
3.5 in
Product Weight
16.6 lb
UPC
662283118522
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
Special features
Flexible PVC protective coating
Crouse-Hinds series EC Explosionproof Couplings catalog page
EC Explosionproof Couplings UL certification
EC Explosionproof Couplings UL certification
Eaton Specification Sheet - ECLK521 S758
The ECLK521 S758 uses a 1-1/2 in trade size with a 27.63 in overall length, featuring male-female ends and a 21 in flexible section. This combination accelerates installation along long conduit runs and reduces field adjustments, cutting installation time and exposure in hazardous environments. Forged brass provides robust mechanical strength and corrosion resistance, while the flexible PVC protective coating adds an outer barrier against moisture and dust, lowering maintenance intervals and lifecycle costs. The unit is designed for hazardous/classified locations with NEC/CEC compliance and Class I, Division 1 ratings, ensuring regulatory conformity and safer operation in harsh settings. Compatibility with Eaton EC explosion-proof couplings catalog simplifies stocking and system integration, enabling quicker repairs and streamlined procurement for industrial projects. The 16.6 lb weight supports stable operations without adding excessive handling complexity on site.
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FAQs
ECLK521 S758 supports a 1-1/2 inch trade size with male and female ends (M-F configuration). The 21 inch flexible section and overall length of 27.63 inches enable coupling of extended conduit runs while maintaining a secure, in-the-field seal. This makes it compatible with EC explosion-proof coupling families and common hazardous-area conduit installations, reducing the need for multiple adapters.
This coupling is designed for Hazardous/Classified Locations with NEC/CEC standards. It carries Class I, Division 1 ratings and UL certifications suitable for both the US and Canada, ensuring compliance for use in potentially explosive atmospheres such as chemical plants and oil & gas facilities. The combination of these certifications provides confidence in safe operation within regulated environments.
Yes. The ECLK521 S758 is specifically rated for Class I, Division 1 hazardous locations and complies with NEC/CEC standards. Its explosion-proof construction and protective coating are intended to withstand harsh chemical and mechanical conditions typical of chemical plants, reducing ignition risks and enabling safer equipment integration in critical process lines.
UL certifications for EC Explosionproof Couplings cover US and Canada use, with listings confirming suitability for hazardous locations. The product page references UL certification for both the US and Canada, ensuring compliance with regional electrical safety standards and facilitating cross-border procurement and installation without additional re-certification.
The flexible PVC coating offers enhanced moisture and dust protection, reducing corrosion risk and extending service life in harsh environments. This translates to lower maintenance frequency and downtime, improved system reliability, and a favorable total cost of ownership when deployed across multiple hazardous-location installations.