Eaton Crouse-Hinds ECLK321 coupling - Class I, Division 1
Part Number: ECLK321
Quick Summary
Eaton Crouse-Hinds ECLK321 coupling provides a flexible 21 in conduit connection for hazardous-area installations. In demanding environments, rigid fittings slow installation and complicate maintenance, risking safety and uptime. This EC explosion-proof coupling is NEC/CEC compliant with Class I, Division 1 ratings and UL-certified for hazardous locations in the US and Canada, supporting regulatory confidence. Forged brass construction delivers durability in corrosive plant environments, while the 1 in trade size and dual-ended configuration simplify field assembly. With a total length of 26 in and a 21 in flexible segment, it enables longer, cleaner runs without compromising safety or performance, translating to reduced labor costs and faster project completion.
Product Information
Extended Description
ECLK321 Eaton Crouse-Hinds: Eaton Crouse-Hinds series ECLK coupling, 21" flexible length, Male connection one end, female connection one end, Forged brass, 1" trade size
Product Name
Eaton Crouse-Hinds series ECLK coupling
Catalog Number
ECLK321
Product Length/Depth
26 in
Product Height
2.13 in
Product Width
2.13 in
Product Weight
2.5 lb
UPC
782274261904
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"
Material
Forged brass
Crouse-Hinds series EC Explosionproof Couplings catalog page
EC Explosionproof Couplings UL certification
EC Explosionproof Couplings UL certification
Eaton Specification Sheet - ECLK321
Feature → Business Impact → Application: The ECLK321 offers a 21 inch flexible segment within a 26 inch overall length, enabling easier routing through tight automation spaces and complex conduit layouts, which cuts installation time and reduces field damage to rolls of cable. This directly improves project timelines and labor efficiency on hazardous-location projects. Feature → Application: Forged brass construction provides robust chemical and impact resistance, lowering replacement costs and service intervals in rugged industrial environments such as chemical plants, oil & gas facilities, and offshore platforms. Feature → Compliance: NEC/CEC alignment and UL listings guarantee explosion-proof performance in Class I, Division 1 environments, simplifying approvals and ensuring ongoing regulatory compliance for hazardous-area conduit systems. Feature → Compatibility: Male and female ends on a single coupling support seamless integration with 1" conduit runs, saving space and enabling faster splice-free connections in tight equipment enclosures. Feature → Installation advantages: 26" total length with a 21" flexible segment reduces bending radii and installation effort, improving worker safety and reducing commissioning time in dense plant layouts.
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FAQs
The ECLK321 is a 1" trade size coupling with male one end and female the other, featuring a 21" flexible segment and a total length of 26". It is designed for hazardous/classified locations and supports seamless integration with standard 1" conduit runs while maintaining explosion-proof performance under NEC/CEC guidelines.
Key specs include 21" flexible length, 26" overall length, 2.5 lb weight, forged brass material, and 1" trade size. It provides Class I, Division 1 ratings and NEC/CEC compliance, with UL explosion-proof certification for hazardous locations—ensuring reliable operation in demanding industrial environments.
This coupling is commonly used in hazardous area conduit systems across oil & gas, chemical processing, and marine/offshore facilities. Its flexible length supports long, route-critical runs, while the 1" trade size and brass construction suit demanding environments that require robust, compliant explosion-proof connections.
The ECLK321 complies with NEC/CEC for hazardous locations and is UL-certified for explosion-proof use in Class I, Division 1 environments, with applicability to both US and Canada. This combination supports regulatory approvals and safer operation within hazardous-area conduit systems.
The forged brass construction provides durability and corrosion resistance, reducing replacement frequency in harsh environments. The 21" flexible segment speeds installation, minimizing labor time and downtime while ensuring reliable performance in hazardous locations, which translates to lower total cost of ownership over the product life cycle.