Overview
The Pass & Seymour L520-C Turnlok connector is an industrial-strength polarized locking power connector designed for 20-amp, 125-volt applications. Manufactured by Legrand (Pass & Seymour), this NEMA L5-20R-rated unit combines durable construction with field-proven locking technology to ensure secure electrical connections in commercial and industrial settings.
Key Features
- Turnlok Locking Design: Polarized locking connector designed for 20A applications with 2-pole configuration ensuring secure, reliable connections that prevent accidental disconnections
- Brass Alloy Contacts: Industrial-strength brass alloy plug blades and connector contacts resist heat rise and provide excellent conductivity
- Quick-Thread Assembly: Quick-thread assembly screws install four times faster than competitive products and come backed-out ready-to-wire
- Ergonomic Grip Design: Raised ribs provide non-slip gripping profile for turning to lock and unlock, with rounded back contour reducing snags and hang-ups on the job site
- Cord Protection: Integral flexible rubber cord grommet conforms to and seals around SO cord to provide protection from oils, water or chips entering wiring chamber
- Durability: Impact- and corrosion-resistant durable nylon 6 shell material
Technical Specifications
The L520-C meets industrial-grade performance standards with the following certified specifications:
Typical Applications
This connector is ideal for powering industrial equipment, temporary job-site power distributions, mobile equipment, and stationary installations requiring secure 20-amp, single-phase power. The polarized locking design makes it suitable for any environment where accidental cord disconnection poses safety or operational risks.
Compatibility & Replacements
Compatible With
- 20-amp rated electrical circuits and power distribution equipment
- Single-phase 125V AC power systems
- SO-type flexible power cords (0.39–1.15 inch diameter)
- Standard NEMA-compliant industrial electrical installations
Replaces / Drop-In Replacement For
- Other NEMA L5-20R-rated connectors in equivalent 20A, 125V applications
- Verify specific model compatibility with system requirements before installation
Works With
- Any NEMA L5-20P plug that matches NEMA L5-20R receptacle standards
- Industrial power cords rated 125V, 20A minimum
- Federal Specification WC596 compliant equipment












