Eaton 4731NCR Locking Connector - cULus Listed
Part Number: 4731NCR
Quick Summary
Eaton 4731NCR corrosion resistant locking connector provides secure, back-wired power connections for industrial equipment in harsh environments. In corrosive plants or high-vibration applications, standard connectors can loosen or fail, causing downtime and safety risks. It features cULus Listed certification and Federal Specifications W-C375 compliance, along with a rugged nylon body and nickel-plated brass contacts to ensure reliability. For procurement, the 0.33–0.66 in cord diameter and back wiring method simplify installation, while the L5-15 two-pole, 125 V, 15 A rating supports common industrial circuits. This combination delivers durability and ease of maintenance, minimizing spare parts and supporting long service life in demanding environments.
Product Information
Extended Description
4731NCR Eaton: Eaton corrosion resistant locking connector , #16-12 AWG, 15A, Industrial, 125V, Back wiring, Yellow, Auto grip, L5-15, Two-pole, Three-wire, Nylon, 0.33 to 0.66 in
Product Name
Eaton Arrow Hart corrosion resistant locking connector
Catalog Number
4731NCR
UPC
040893679235
Product Length/Depth
1.38 in
Product Height
1.83 in
Product Width
1.52 in
Product Weight
0.55 lb
Compliances
Federal Specifications Classification W-C375
Certifications
cULus Listed
Amperage Rating
15A
NEMA configuration
L5-15
Operating temperature
-20 to 75 °C (-4 to 167 °F)
Voltage rating
125 V
Wiring method
Back
Environmental conditions
Corrosion resistant
Environmental resistance
Corrosion resistant
Color
Yellow
Contact material
Nickel plated brass
Material
Nylon
Allowable wire size
#16-12 AWG
Application
Industrial
Cord diameter
0.33-0.66 in
Design type
Industrial grip
Device grade
Extra heavy-duty industrial specification grade
Number Of Poles
Two-pole
Type
Locking connector
Corrosion resistant nylon housing and nickel plated brass contacts provide long service life, reducing replacement costs in dirty or corrosive environments. This combination translates to fewer field failures and lower maintenance spend in continuous-operation facilities. Back wiring with #16-12 AWG and a cord diameter of 0.33–0.66 in enables fast, mistake-free terminations, reducing installation time and wiring errors in control panels and power distribution hubs. The auto grip design enhances retention under vibration, improving safety and uptime in manufacturing floors where cords experience movement. The two-pole L5-15 configuration ensures compatibility with common industrial circuits, supporting straightforward cord interchangeability and scalable power distribution. Certifications and rugged materials reinforce compliance and procurement confidence, while sustaining a low total cost of ownership over the product lifecycle.
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FAQs
Prepare conductors using #16-12 AWG wire, matching 125V/15A ratings. Back-wire the conductors into the appropriate terminals, tightening screws securely. Ensure correct polarity and use the auto grip feature for strain relief. Verify a solid, vibration-resistant connection before energizing the circuit to prevent arcing or loosening over time.
The connector is rated for 15A at 125V with a two-pole L5-15 configuration and back wiring. Cord diameter supported is 0.33 to 0.66 inches. Physical dimensions are approximately 1.38 in (length) × 1.83 in (height) × 1.52 in (width), with a weight around 0.55 lb.
Yes. The 4731NCR uses a corrosion resistant nylon housing and nickel plated brass contacts, designed for industrial grip and back wiring. These materials endure chemical exposure and vibration, reducing maintenance frequency and extending service life in manufacturing, automation, and utility environments.
The 4731NCR is cULus Listed and complies with Federal Specifications W-C375. These certifications confirm safety, compatibility with UL standards, and regulatory alignment for industrial electrical components, simplifying procurement approval and ensuring consistent performance in regulated environments.
The locking mechanism minimizes accidental disconnections, while rugged nylon and nickel contacts resist corrosion, reducing downtime and replacement costs. Back wiring speeds installation, lowering labor hours during maintenance. Over time, these attributes translate to improved uptime, safer operation, and a lower total cost of ownership.