Overview
The Pass & Seymour L1620-P Turnlok locking plug is designed for heavy-duty industrial power distribution applications. Rated for 20 amp, 3 phase, 480 volt AC service, this NEMA L16-20P configuration delivers a secure, polarized connection with superior cord retention. Built for outdoor and indoor industrial environments, the L1620-P combines durability with ease of use.
Key Features
- Turnlok mechanism: Raised ribs provide non-slip gripping profile for easy turning to lock and unlock
- Double dovetail design: Superior protection against cord pull-out forces
- Brass alloy contacts: Industrial-strength blades and connector contacts resist heat rise and provide excellent conductivity
- Nylon 6 shell: Impact and corrosion resistant material for long service life
- Flexible cord grommet: Integral rubber grommet seals around SO cord to protect against oils, water, and chips
- Scallop shell design: Non-slip gripping surface for secure insertion and withdrawal
Technical Specifications
- NEMA Configuration: L16-20P
- Voltage Rating: 480 VAC, 3 Phase
- Current Rating: 20 Amp
- Poles: 3 Pole, 4 Wire
- Conductor Size: 4 AWG
- Cord Range: 0.385″ to 1.15″ diameter
- Material: Nylon 6, industrial spec grade
- Color: Black back, White front body
- Dimensions: 2.2″ diameter × 3.75″ to 3.8″ length
- Operating Temperature: −40°C to +75°C
- Approvals: UL 498, CSA, cULus Listing
- Standards: NEMA WD-1/WD-6, UL WC-596
- Enclosure Rating: IP20
Typical Applications
- Industrial equipment power distribution
- Three-phase motor circuits
- Heavy machinery and manufacturing equipment
- Temporary power and job site installations
- Data center and telecommunications infrastructure
Compatibility & Replacements
Compatible With
- NEMA L16-20P receptacles and connectors
- 480 VAC 3-phase power distribution systems
- Industrial power cords rated for 20 amp service
- SO (oil-resistant) flexible power cables
Replaces / Drop-In Replacement For
- Previous generation Pass & Seymour L1620 models
- Legrand Turnlok L16-20P plugs
- Equivalent NEMA L16-20P locking plugs from other manufacturers
Works With
- 480V 3-phase industrial control circuits
- Motor control circuits and starter equipment
- Temporary power distribution equipment
- Cable and cord assembly applications






