Eaton SA540W Straight Blade Plug - cULus Listed
Part Number: SA540W
Quick Summary
SA540W straight blade plug by Eaton provides reliable 15A, 125V connectivity for industrial equipment and control panels. Many installations struggle with loose back-wire terminations or miswired polarized plugs that slow downtime and raise safety risk. This device is cULus Listed and meets Federal Specification 6221 02, reinforcing compliance for regulated facilities and critical processes. Designed for industrial-grade back-wire connections and a polarized non-grounding design, it streamlines installation while promoting consistent torque and reliable contact. Its compact thermoplastic body and brass contacts translate into durable performance and cost-effective maintenance for panel builders and integrators. With a 1-15P NEMA configuration and a 14 lbf-in torque rating, it ensures secure, vibration-resistant terminations in demanding environments.
Product Information
Extended Description
SA540W Eaton: Eaton straight blade plug , #16 AWG, 15A, Industrial, 125V, Back wire, White, Brass, Impact-resistant thermoplastic, 1-15P, Two-pole, two-wire, Screw, 0.33" in diameter, Thermoplastic, Core pack
Product Name
Eaton straight blade plug
Catalog Number
SA540W
UPC
052757540407
Product Length/Depth
1.37 in
Product Height
1.16 in
Product Width
0.75 in
Product Weight
0.055 lb
Certifications
cULus Listed Federal Specification Classification 6221 02
Device type
Plug
Special features
PolarizedNon-grounding
Type
Plug
Amperage Rating
15A
Voltage rating
125V
Contact material
Brass
Features
Polarized Non-grounding
Application
Industrial
Device grade
Standard grade
Wiring method
Back wire
Number of wires
2
Number Of Poles
Two-pole
Style type
Straight body
Cord range
0.33" in diameter
Material
Thermoplastic
Packaging type
Core pack
Color
White
Connection type
Screw
Allowable wire size
#16 AWG
NEMA configuration
1-15P
Torque rating
14 lbf-inch
Design type
Straight blade
Face/body material
Impact-resistant thermoplastic
Receptacle type
Two-pole, two-wire
Residential Buyers Guide B-53
Commercial and residential straight blade vinyl receptacles
Eaton Specification Sheet - SA540W
Feature: Back-wire termination supports #16 AWG wires. Business Impact: Faster installations with fewer field mistakes reduce labor costs and commissioning time. Application: Ideal for panel wiring in control cabinets where space is constrained and field rewiring happens often. Feature: NEMA configuration of 1-15P (two-pole, two-wire). Business Impact: Matches standard 125V industrial circuits, simplifying part sourcing and spare-part stocking. Application: Power feeds for equipment and portable devices in manufacturing lines. Feature: Polarized non-grounding design. Business Impact: Improves safety orientation during plug-in operations and minimizes mismatches in multi-receptacle layouts. Application: Control panels and power distribution blocks in automation environments. Feature: Thermoplastic face/body with brass contacts. Business Impact: Delivers impact resistance and reliable electrical contact under vibration, extending component life. Application: Harsh factory floors and high-cycle environments. Feature: Screw termination with 14 lbf-in torque rating. Business Impact: Ensures repeatable, secure connections, reducing field loosening and rework. Application: OEM assemblies and serviceable equipment where torque consistency matters. Feature: Core-pack packaging and white color. Business Impact: Simplifies procurement and visibility in crowded wiring closets, speeding stocking and inspection. Application: OEM builds and aftermarket replacements in industrial settings. Engineers also value compatibility with #16 AWG wiring, back-wire terminations, and standardized torque for repeatable assemblies.
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FAQs
The SA540W back-wire plug is designed for #16 AWG conductors in a two-wire configuration. The back-wire termination supports a secure clamp for small-diameter power conductors, and the 14 lbf-in torque rating ensures consistent clamping force. For installers, this translates to repeatable terminations with minimal rework and reliable long-term performance in industrial panels.
Yes. The SA540W is rated for 125V and 15A, making it suitable for standard 125V industrial circuits. It uses a 1-15P NEMA configuration, which corresponds to a polarized two-pole, two-wire plug. This configuration supports straightforward compatibility with common 125V power receptacles found in control panels and equipment enclosures.
The SA540W is cULus Listed and complies with Federal Specification Classification 6221 02. These certifications indicate adherence to recognized safety standards and regulatory requirements for industrial wiring devices, reducing compliance risk for manufacturers and end users and supporting safer, more reliable installations in regulated environments.
Back-wire terminations paired with a 14 lbf-in torque rating provide secure, vibration-resistant connections that resist loosening over time. The polarized non-grounding design reduces miswiring, while the brass contacts and thermoplastic body withstand industrial wear. Collectively, these features minimize rework, expedite field servicing, and lower total maintenance costs in automation assemblies.
SA540W is ideal for control panels, power distribution blocks, and equipment fed by 125V circuits in manufacturing and processing environments. Its back-wire option, #16 AWG compatibility, and two-wire configuration make it a practical choice for OEM builds and serviceable machinery requiring quick installs, durable contacts, and dependable operation in demanding industrial settings.