Eaton SA540B Plug - cULus Listed 6221 02

Part Number: SA540B
Manufacturer
Eaton
Part number
SA540B

Quick Summary

The Eaton SA540B Plug is a polarized straight blade plug designed for industrial power connections. Wiring in tight control cabinets can be time-consuming, and field terminations often suffer from loose connections. This part is cULus Listed and documented under Federal Specification 6221 02, underscoring its reliability in North American facilities. Built with brass contacts and an impact-resistant thermoplastic body, the SA540B delivers dependable performance under vibration and temperature variations. Its compact dimensions and back-wire capability support efficient, compliant installations, while the polarized design helps maintain correct polarity across equipment footprints in production lines. This combination translates to faster changeovers, reduced wiring faults, and improved uptime for critical automation assets.

Product Information

Extended Description

SA540B Eaton: Eaton straight blade plug , #16 AWG, 15A, Industrial, 125V, Back wire, Brown, 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
SA540B
UPC
052757540308
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
Brown
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
15A at 125V is a core electrical specification that governs safe, predictable performance in industrial equipment. Business impact: this rating supports consistent power delivery from standard cord sets, reduces nuisance trips, and lowers energy waste from improper connections. Application: ideal for control panels, conveyors, motors, and other two-wire loads in manufacturing environments. Polarized, non-grounding design minimizes polarity mistakes in busy workplaces. Impact: safer startups, reduced risk of incorrect neutral-ground faults, and improved reliability under vibration. Application: suited for back-wire capable devices that use a two-wire, 1-15P configuration in industrial controls. Durable impact-resistant thermoplastic body defends the plug against drops, splashes, and UV exposure on the factory floor. Impact: longer service life, lower replacement costs, and reduced downtime from physical damage. Application: ideal for core-pack packaging and stocking in maintenance bays for quick deployment. Back-wire capability with a screw termination supports fast, secure field wiring for #16 AWG conductors up to 0.33 inches in diameter. Impact: faster installations, consistent torque of 14 lbf-in, and reliable connections in environments with vibration and temperature fluctuations. Application: perfect for industrial control panels and equipment requiring compact, space-saving plugs. Compact footprint and NEMA 1-15P two-pole configuration (1-15P) deliver a space-efficient solution for tight panels. Impact: reduced enclosure footprint, easier cable routing, and compatibility with standard 125V power rails. Application: widely used across manufacturing cells, assembly lines, and instrumentation enclosures where durable, polarized power connections are needed.

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FAQs

SA540B supports back-wire termination with a screw connection option, designed for two-wire circuits using #16 AWG conductors. It accepts two wires and is specified for a 0.33 inch cord diameter. The connector employs a 14 lbf-inch torque rating to ensure a secure, durable termination in industrial applications and is compatible with standard power cords and enclosures.
Yes, the SA540B is polarized and non-grounding, designed to prevent reverse polarity in two-wire circuits. It uses a 1-15P NEMA configuration suitable for 125V, 15A industrial equipment. The back-wire termination, along with a screw terminal option, supports quick field wiring while maintaining reliable contact under vibration and temperature variations in harsh manufacturing settings.
The SA540B carries cULus Listing and Federal Specification 6221 02, confirming safety compliance for North American electrical devices. These certifications support procurement and installation in regulated environments and help simplify documentation for audits, insurance, and system integrator requirements. Relying on these standards reduces risk of non-compliance during commissioning across plant floors and service centers.
Dimensions are 1.37 inches in length, 0.75 inches in width, and 1.16 inches in height, with a weight of 0.055 pounds. This compact form fits tighter panel spaces and reduces clearance issues in crowded electrical enclosures. The durable thermoplastic body enhances impact resistance, while brass contacts support reliable, low-resistance connections over many cycles.
Designed for industrial power connections, the SA540B supports 125V and 15A two-wire circuits using #16 AWG conductors. It integrates into control panels, motors, and equipment where back-wire terminations and polarized non-grounding plugs improve safety and reliability. Its core-pack packaging also helps minimize waste and simplify stocking in maintenance stores.