Eaton Crouse-Hinds ECLK421 S758 Coupling - Class I, Div 1
Part Number: ECLK421 S758
Quick Summary
Eaton Crouse-Hinds ECLK421 S758 coupling is a robust explosion-proof connector designed for hazardous-area electrical installations. In the field, sealing integrity and correct rating are common pain points that drive safety risks and costly downtime. It carries NEC/CEC certifications for Hazardous/Classified Locations, including Class I, Division 1, with additional Class II and Class III ratings. A forged brass body, flexible PVC coating, and a 1-1/4 inch trade size deliver durable, code-compliant conduit connections, while its 21 inch flexible length supports complex routing and easier installation in constrained industrial spaces. This combination translates into safer installations, reduced maintenance, and faster project turnover for oil & gas, chemical processing, and marine applications.
Product Information
Extended Description
ECLK421 S758 Eaton Crouse-Hinds: 1 1/4 X 21 DIV 1 FLEX CPLG M-F NEO COATG
Product Name
Eaton Crouse-Hinds series ECLK coupling
Catalog Number
ECLK421 S758
Product Length/Depth
26.75 in
Product Height
2.94 in
Product Width
2.94 in
Product Weight
11.51 lb
UPC
782274979335
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
1-1/4"
Material
Forged brass
Special features
Flexible PVC protective coating
Crouse-Hinds series EC Explosionproof Couplings catalog page
EC Explosionproof Couplings Canadian certification
EC Explosionproof Couplings Canadian certification
Eaton Specification Sheet - ECLK421 S758
Forged brass construction delivers high mechanical strength and corrosion resistance in aggressive environments. This translates to longer service life and lower maintenance costs, especially in offshore rigs and refineries. The 1-1/4 inch trade size and overall dimensions—26.75 inches in length, 2.94 inches in height and width, and a 11.51 pound weight—ensure compatibility with standard conduit runs and provide predictable handling during field assembly, reducing commissioning time and inventory complexity. The 21 inch flexible length, coupled with a flexible PVC protective coating, enables easier routing around equipment and enhanced abrasion resistance, delivering durable protection in outdoors and damp environments. With hazardous-location ratings including Class I, Division 1, and NEC/CEC compliance, the ECLK421 S758 supports safe installations and code-driven design across multiple jurisdictions. Canadian certification support further enables cross-border projects, improving procurement efficiency. The combination of compatibility, protective features, and compliance minimizes retrofit costs and accelerates deployment in new builds and maintenance projects. Finally, the male-female end configuration simplifies mating and reduces the risk of improper assembly in tight electrical enclosures.
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FAQs
The ECLK421 S758 is designed for 1-1/4 inch trade-size conduit fittings with a male end on one side and a female end on the other. Its 26.75 inch length and 21 inch flexible segment enable routing in confined spaces, while the forged brass body ensures robust mating with standard EC/Explosionproof fittings used in hazardous-area installations.
Key specs include trade size 1-1/4 inch, length 26.75 inches, height and width 2.94 inches each, weight 11.51 pounds, forged brass material, and a flexible 21 inch length with a flexible PVC protective coating. It features male and female connections at opposite ends for straightforward assembly in hazardous locations.
Yes. The coupling carries NEC/CEC certification for Hazardous/Classified Locations, specifically Class I, Division 1, with additional ratings for Class II and Class III. This makes it appropriate for safety-critical applications in chemical plants, refineries, and other facilities where explosive atmospheres may be present.
Yes. Certification reports and UL listings cover Canadian certification for EC Explosionproof Couplings, enabling use in Canada and cross-border projects. The product’s NEC/CEC alignment and hazardous-location ratings support compliant installations across North America, reducing sourcing and approval delays on multinational projects.
To maximize ROI, pair the ECLK421 S758 with compatible EC explosion-proof fittings in 1-1/4 inch conduit runs, leverage its 21 inch flexible section for efficient routing, and rely on the durable forged-brass body to minimize maintenance in harsh environments. Ensure compliance with Class I, Division 1 requirements and keep Canadian certification documentation on hand for cross-border projects.