Eaton Crouse-Hinds CEX-133B16-321SN - Roughneck Plug Zone 1
Part Number: CEX-133B16-321SN
Quick Summary
CEX-133B16-321SN is a rugged cable-mounted plug for hazardous locations in industrial automation and control panels. Maintenance teams often battle sealing failures, slow terminations, and regulatory risk in Zone 1 environments. This Roughneck connector carries IECEx/ATEX Zone 1 certification, IP68/IP66 ingress protection, and NEMA 6P 4X ratings to protect people and equipment where flammable atmospheres exist. Designed for unarmoured cables with #16 AWG conductors terminated by crimp sockets, it supports quick installation and robust field service. In harsh facilities such as mining, oil and gas, or chemical processing, it helps reduce downtime and maintenance costs while aligning with Hazardous/Classified Locations standards.
Product Information
Extended Description
CEX-133B16-321SN Eaton Crouse-Hinds: Eaton Crouse-Hinds series Roughneck CEX cable mounted plug with cable gland, 18A, Eex d gland, Unarmoured, Female, Silver plated copper contacts, #16 AWG, Crimp, Socket, 13.5 - 20.5 inner sheath, 18.0 - 27.5 outer sheath, 16 shell
Product Name
Eaton Crouse-Hinds series Roughneck CEX cable mounted plug with cable gland
Catalog Number
CEX-133B16-321SN
Product Length/Depth
8.57 in
Product Height
2.25 in
Product Width
2.25 in
Product Weight
1.5 lb
UPC
662276630482
Area classification
Hazardous/Classified Locations
Standards type
IECEx/ATEX NEC/CEC
IECEx/ATEX hazardous rating
Zone 1
NEMA Rating
6P 4X
Ingress protection (IP) ratings
IP68 IP66
Shell size
16
Cable hardware
Eex d Gland
Cable type
Unarmoured
Inner sheath (min/max)
13.5 - 20.5
Outer sheath (min/max)
18.0 - 27.5
Contact size
#16 AWG
Amperage Rating
18 A
Connector gender
Female
Contact type
Socket
Contact termination
Crimp
Contact material
Silver plated copper
Roughneck Multi-pin and Single Pole Connectors brochure
Roughneck Hazardous Area Multi-pin and Single Pole Connectors catalog page
IF 1683 - Roughneck Hazardous Multi-pin Connector
Eaton Specification Sheet - CEX-133B16-321SN
IECEx/ATEX Zone 1 certification and IP68/IP66 ingress protection form the foundation for safe operation in hazardous areas, reducing compliance risk and enabling reliable equipment uptime in oil & gas, mining, and chemical processing. The EEx d gland provides a robust seal at the cable entry, improving ingress protection and electrical integrity, which translates to fewer unscheduled maintenance events in explosive atmospheres and easier regulatory audits. This connector is specified for unarmoured cables and #16 AWG conductors with crimped sockets, delivering a compact termination that accelerates field installs and minimizes boot-up time for hazardous-area projects. NEMA 6P 4X ruggedness adds mechanical resilience against dust, moisture, and impact in rugged plants, lowering replacement costs and extending service life. Silver-plated copper contacts enhance conductivity and corrosion resistance, ensuring stable performance in challenging environments and reducing contact resistance over time. The shell size 16, internal/external sheath ranges (13.5–20.5 mm / 18.0–27.5 mm), and Eex d gland design simplify cable preparation, enabling faster splices, easier inspections, and a repeatable termination process. This makes Roughneck connectors a preferred choice for hazardous-area wiring in mining, petrochemical plants, and emergency shutdown systems.
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FAQs
Plan to select the Eex d cable gland sized for the unarmoured cable, prepare the inner sheath (13.5–20.5) and outer sheath (18.0–27.5) to fit the shell, crimp the #16 AWG contacts with the socket, and secure the gland to maintain IP68/IP66 sealing. Verify Zone 1 IECEx/ATEX compliance after wiring, then perform a functional check to ensure no ingress paths exist and that the NEMA 6P 4X enclosure remains intact.
Key specs include an 18 A amperage rating, #16 AWG contact size, socket contact type, crimp termination, and silver-plated copper contact material. The device supports unarmoured cable with EEx d gland, has shell size 16, and is rated for Zone 1 hazardous locations with IP68/IP66 protection and NEMA 6P 4X sealing, making it suitable for demanding industrial duty.
Yes. The connector is specified for unarmoured cable with #16 AWG conductors and includes an EEx d gland designed to maintain enclosure integrity in Zone 1 environments. Inner and outer sheath parameters (13.5–20.5 mm and 18.0–27.5 mm) support a range of cable constructions, enabling reliable, sealed terminations in hazardous locations.
The CEX-133B16-321SN carries IECEx/ATEX Zone 1 certification, IP68/IP66 ingress protection, and a NEMA 6P 4X rating. These certifications confirm compliance with global hazardous-area standards, ensure protection against dust and water ingress, and validate mechanical ruggedness, which is critical for safe operation in mining, oil & gas, and chemical processing environments.
The rugged Roughneck design reduces maintenance downtime by delivering reliable sealing, quick field terminations, and extended service life in harsh environments. With durable silver-plated copper contacts and a robust EEx d gland, you benefit from lower replacement costs, fewer inspection issues, and faster commissioning for hazardous-area wiring projects, improving overall equipment availability and project ROI.