Eaton / Cooper Wiring Devices L520R — Industrial‑Grade Locking Receptacle:
The Eaton (Cooper Wiring Devices) L520R is a premium‑grade, commercial/industrial locking receptacle engineered for high‑demand electrical environments where reliable, vibration‑resistant power connections are essential. Built with a rugged glass‑filled nylon housing and designed for use with NEMA L5‑20 locking plug configurations, this receptacle provides a secure, twist‑lock interface that prevents accidental disconnection during operation.
Suitable for factories, workshops, data centers, construction sites, and industrial facilities, the L520R delivers dependable electrical performance backed by Eaton’s long-standing reputation for durability and safety. It is specifically designed for environments requiring stable power delivery under heavy mechanical stress, temperature fluctuations, and high operational loads.
Key Features
20 Amp, 125 Volt Industrial Rating – Supports demanding commercial and industrial equipment requiring consistent, reliable power.
NEMA L5‑20R Locking Configuration – Twist‑lock interface ensures a secure connection and prevents accidental unplugging from vibration or movement.
Rugged Glass‑Filled Nylon Construction – Provides impact resistance, enhanced durability, and long service life even in harsh environments.
Back‑Wired Design – Allows efficient installation with strong retention for wires, supporting industrial-grade wiring methods.
Brass Contacts – Optimized for high conductivity and heat resistance, ensuring stable, low‑resistance electrical performance.
Industrial Temperature Ratings – Designed to operate reliably from extreme cold to high‑heat conditions.
UL, CSA, and NOM Certifications – Fully compliant with major North American electrical standards for safety and reliability.
Specifications
Product Type: Industrial locking receptacle
Configuration: NEMA L5‑20R (2‑Pole, 3‑Wire)
Amperage: 20A
Voltage: 125V AC
Poles: 2
Wires: 3
Color: Black (BK)
Material: Glass‑filled nylon body/face for industrial durability
Contact Material: Brass for optimal conductivity and heat performance
Mounting Style: Outlet box / flush mount depending on installation
Wiring Method: Back wiring with screw terminal retention
Operating Temperature Range: -40°C to 70°C (-40°F to 158°F)
Certifications: UL Listed, CSA certified, NOM approved, RoHS compliant
Applications
The L520R is engineered for industrial-grade power distribution, making it ideal for applications that require a secure, locking connection and robust performance.
Manufacturing Facilities: Powering heavy machinery, conveyor equipment, and motor-driven tools requiring stable, vibration‑resistant connectivity.
Commercial & Industrial Construction: Suitable for power distribution panels, temporary power centers, and jobsite equipment.
Workshops & Fabrication Centers: Perfect for welders, compressors, saws, and high‑load specialty equipment.
Data Centers & Server Rooms: Provides locking security for critical power circuits, minimizing accidental disconnects.
Maintenance & Utilities: Ideal for facility power drops, repair stations, and portable industrial equipment requiring certified, reliable components.
Harsh Environmental Settings: Designed to withstand physical impact, temperature extremes, and demanding operational conditions thanks to its rugged nylon construction and industrial-grade internal materials.
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