Eaton 3431N-M Locking Plug - cULus Listed
Part Number: 3431N-M
Quick Summary
The Eaton 3431N-M locking plug is a rugged locking connector for industrial power distribution. It addresses nuisance unplugging and wiring misconnects in demanding environments where cords endure frequent movement. RoHS compliant and cULus listed, it aligns with safety and emissions requirements while offering a glass-filled nylon body that stands up to harsh industrial use. With back-wiring for #16-8 AWG conductors and a 30A rating at 120/208V three-phase, it provides reliable, adaptable power delivery for equipment, motors, and control panels. These features translate into reduced downtime, simplified maintenance, and improved overall equipment effectiveness for midstream manufacturing environments.
Product Information
Extended Description
3431N-M Eaton: Eaton locking plug, #16-12 AWG, 30A, Industrial, 120/208V, Back wiring, Black, white, Safety grip, Non-NEMA, Four-pole, Four-wire, Glass-filled nylon, 0.63 to 1.16 in
Product Name
Eaton Arrow Hart ultra grip locking plug
Catalog Number
3431N-M
UPC
032664737770
Product Length/Depth
4.19 in
Product Height
2.31 in
Product Width
2.28 in
Product Weight
0.4 lb
Compliances
RoHS Compliant
Certifications
cULus Listed
Special features
Locking receptacle
Type
Locking plug
Amperage Rating
30A
Voltage rating
3ØY 120/208 V
Contact material
Brass
Application
Industrial
Device grade
Extra heavy-duty industrial specification grade
Wiring method
Back
Number of wires
Non-grounding 4
Number Of Poles
Four-pole
Color
White Black
Cord diameter
0.38-1.16 in (9.5-29.4 mm)
Material
Nylon
Operating temperature
-40 to 60 °C (-40 to 140 °F)
Allowable wire size
#16-8 AWG
NEMA configuration
Non-NEMA
Torque rating
For #10-14 AWG: 14-16 lbf-inch. For #8 AWG: 20 lbf-inch
Design type
Ultra grip
Face/body material
Nylon
Arrow Hart - Connecting Safety to Reliability since 1890
Eaton Specification Sheet - 3431N-M
Eaton Specification Sheet - 3431N-M
Feature → Business Impact → Application: The ultra grip locking mechanism secures connections even in vibration-heavy environments, reducing misfeeds and accidental disconnections, which directly improves machine uptime in continuous operation settings such as packaging lines and processing plants. Application-specific benefit includes safer power delivery to motors and control panels, enabling more predictable maintenance windows and lower incident rates. Feature → Business Impact → Application: Four-pole design with back wiring supports #16-8 AWG conductors, streamlining field installs and service changes while maintaining robust electrical integrity; this translates to faster panel upgrades and lower labor costs on retrofit projects. Feature → Business Impact → Application: Nylon glass-filled body delivers thermal and mechanical resilience in harsh environments, extending service life in outdoor и indoor industrial areas and reducing replacement frequency. Feature → Business Impact → Application: 30A rating at 120/208V three-phase supports common industrial circuits, enabling universal compatibility across motors, pumps, and HVAC equipment while simplifying parts stocking. Feature → Business Impact → Application: RoHS compliance and cULus listing provide regulatory assurance and peace of mind for compliance programs, ensuring safe procurement and easier crossover between electrical assemblies and control systems.
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FAQs
The 3431N-M supports back wiring for conductors in the #16-8 AWG range and accommodates four wires in a four-pole configuration. It carries a 30A amperage rating at 120/208V and uses a nylon body with a locking receptacle to ensure a secure, vibration-tolerant connection. Torque specifications include 14-16 lbf-in for smaller gauges and 20 lbf-in for #8 AWG, aiding reliable field assembly.
The ultra grip locking mechanism physically secures the plug in the receptacle, preventing accidental unplugging during operation. This is especially valuable in environments with equipment vibration or movement. The device is non-NEMA, four-pole, and employs a safety grip design with a durable nylon body to maintain a stable connection under demanding conditions and temperature ranges from -40 to 60 °C.
Yes. The 3431N-M is rated for 120/208 V in a three-phase configuration and features a four-pole, non-grounding wiring arrangement. This makes it suitable for industrial motors, pumps, and other three-phase equipment. Its locking design minimizes disconnect risk, ensuring consistent power delivery across three-phase systems in manufacturing and processing environments.
The 3431N-M is RoHS compliant and cULus Listed, meeting important safety, environmental, and electrical compliance requirements for industrial equipment. These certifications support procurement decisions in regulated industries and simplify integration with other UL-listed components and control panels while enabling safer sourcing for compliant electrical assemblies.
Plan for back wiring with conductors in the #16-8 AWG range and secure connections using the specified torque range. The plug measures 4.19 in long, 2.31 in high, and 2.28 in wide with a 0.4 lb weight, and accommodates cord diameters from 0.38 to 1.16 in. Its operating temperature spans -40 to 60 °C, making it suitable for indoor and outdoor industrial installations.