Eaton 3333CWBK Watertight locking connector - cULus Listed
Part Number: 3333CWBK
Quick Summary
The Eaton 3333CWBK watertight locking connector is designed for rugged industrial connections in harsh environments. It helps prevent field failures by delivering a secure, water-resistant termination even in washdown zones. Certified cULus Listed protection along with IP67 and NEMA ratings (4, 6P, 6, 4X) support compliant, reliable installations. Designed for 18-10 AWG back-wired cables, metal contacts, and a durable Santoprene body, it helps reduce maintenance costs and downtime. Engineers appreciate the back-wiring method for fast, repeatable field assembly and predictable torque performance across process lines.
Product Information
Extended Description
3333CWBK Eaton: Eaton Arrow Hart watertight locking connector, #18-10 AWG, 30A, Industrial, 125/250V, Back wiring, Black, Watertight, Non-NEMA, Three-pole, Three-wire, non-grounding, Santoprene thermoplastic elastomeric, 0.43 to 1.15 in
Product Name
Eaton Arrow Hart watertight locking connector
Catalog Number
3333CWBK
UPC
032664708473
Product Length/Depth
6.8 in
Product Height
3.88 in
Product Width
4.39 in
Product Weight
0.845 lb
Certifications
cULus Listed
Amperage Rating
30A
NEMA configuration
Non-NEMA
Number Of Poles
Three-pole
Number of wires
Non-grounding 3
Torque rating
20 lbf-inch
Voltage rating
125/250 V
Environmental resistance
NEMA 4 NEMA 6P NEMA 6 IP67 NEMA 4X
Allowable wire size
#18-10 AWG
Wiring method
Back
Color
Black
Contact material
Nickel plated brass
Application
Industrial
Cord diameter
0.43-1.15 in
Design type
Watertight locking connector
Device grade
Extra heavy-duty industrial specification grade
Face/body material
Nylon
Material
Santoprene thermoplastic elastomeric
Special features
Watertight
Type
Locking connector
Feature: Watertight protection with IP67 and multiple NEMA ratings. Business Impact: Protects equipment from water, dust, and immersion, reducing unplanned downtime and warranty claims. Application: Ideal for washdown areas and outdoor installations where reliability is critical. Feature: 3-pole, 3-wire, non-grounding design with back wiring for #18-10 AWG conductors. Business Impact: Simplifies field wiring, speeds installation, and lowers labor costs while maintaining a secure connection. Application: Industrial machines and conveyors with tight space constraints. Feature: Nickel-plated brass contacts and Nylon body with Santoprene seal. Business Impact: Delivers enduring conductivity and corrosion resistance, extending service life in harsh environments. Application: Heavy-duty equipment exposed to moisture and chemicals. Feature: 20 lbf-in torque rating for consistent mating force. Business Impact: Prevents loosening due to vibration, improving reliability in dynamic applications. Application: High-vibration industrial settings. Feature: 30A at 125/250V, back-wiring capability, and rugged enclosure. Business Impact: Supports high-demand power applications with flexible wiring options and robust protection. Application: Industrial power distribution and equipment connections. These attributes collectively provide faster installation, lower maintenance, and extended equipment life in challenging environments.
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FAQs
To install, prepare the conductor ends, back-wire into the terminals per the product sheet, and tighten to the specified torque of 20 lbf-in. Verify insulation clearance, then mate the connector housing to the mating half and secure with recommended hardware. Use the supplied seals to ensure IP67 protection and confirm a snug, vibration-resistant fit to prevent loose connections.
The 3333CWBK is rated for 30A at 125/250V, with three poles and three non-grounding wires. It carries cULus Listed certification and provides IP67 and NEMA protections including 4, 6P, 6, and 4X, making it suitable for washdown, outdoor, and corrosive environments.
Yes. Its IP67 rating and multiple NEMA protections (4/6/6P/4X) ensure moisture and ingress resistance, while its Santoprene seal and nylon body offer chemical and impact resistance for reliable service in washdown zones.
The connector is cULus Listed, which confirms compliance with North American safety standards. This certification, along with IP67 and NEMA ratings, helps ensure regulatory compliance, safer installations, and broader acceptance across OEMs and facilities handling industrial equipment.
The locking mechanism provides secure mating even in high-vibration environments, reducing disconnections. Back wiring simplifies installations, cutting field labor time, while durable materials (Nylon, Santoprene, nickel-plated brass) extend service life and minimize maintenance frequency, delivering tangible ROI over the equipment’s life cycle.