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# Main ST Collective NEMA L16-20P & L16-20R Locking Plug and Connector Set
## 20 Amp • 480 Volt AC • Heavy-Duty Industrial Twist Lock Power Set
### Available in 1PK, 2PK, 4PK, 6PK, 8PK, 10PK, 12PK, 15PK & 20PK
Power your equipment with confidence using the **Main ST Collective NEMA L16-20P & L16-20R Locking Plug and Connector Set**. Designed for demanding commercial, industrial, and specialty power applications, this complete twist-lock power set provides one matching locking plug and one locking connector per set for secure, dependable electrical connections.
Whether you're building custom extension cords, servicing industrial generators, wiring manufacturing equipment, powering race trailers, maintaining commercial facilities, or assembling portable power distribution systems, these heavy-duty locking devices are engineered for long-lasting performance. The twist-lock design helps prevent accidental disconnects while providing a secure connection in environments subject to vibration, movement, and continuous use.
Available in multiple pack sizes, these complete plug and connector sets are ideal for electricians, contractors, maintenance departments, fabrication shops, fleet service, industrial facilities, and anyone building or repairing heavy-duty 480V power cords.
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# About Main ST Collective
Main ST Collective is the in-house hardware and electrical parts brand of **Main Street Eshop**, created for automotive enthusiasts, RV owners, racers, fabricators, contractors, commercial facilities, industrial users, and professional technicians.
Our mission is simple—to provide dependable, commercial-quality products that perform in real-world applications. From electrical connectors and replacement plugs to automotive hardware and workshop essentials, Main ST Collective products are selected for durability, reliability, and value.
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# About Main Street Eshop
Main Street Eshop supplies premium automotive, electrical, industrial, RV, racing, trailer, and shop equipment for professionals and DIY customers alike.
Whether you're wiring a commercial facility, maintaining industrial equipment, powering specialty machinery, outfitting a race trailer, servicing generators, or upgrading your workshop, Main Street Eshop offers dependable products designed to keep your equipment operating safely and reliably.
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# Product Features
✔ Complete NEMA L16-20P Plug & L16-20R Connector Set
✔ One Matching Plug & Connector Per Set
✔ 20 Amp • 480 Volt AC Rating
✔ 3 Pole • 4 Wire Grounding Configuration
✔ Heavy-Duty Industrial Construction
✔ Twist-Lock Design Helps Prevent Accidental Disconnects
✔ Heavy-Duty Brass Internal Components
✔ Secure Screw Terminal Wire Connections
✔ Durable Nylon Plug Housing
✔ Rugged Thermoplastic Connector Housing
✔ Easy Wire Assembly
✔ Designed for Long Service Life
✔ cUL Listed
✔ NEMA Rated
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# Specifications
**Plug**
Configuration: NEMA L16-20P
Current Rating: 20 Amps
Voltage Rating: 480 VAC
Housing Material: Heavy-Duty Nylon
Grounding: Yes
Connection Type: Twist Lock
**Connector**
Configuration: NEMA L16-20R
Current Rating: 20 Amps
Voltage Rating: 480 VAC
Housing Material: Heavy-Duty Thermoplastic
Grounding: Yes
Connection Type: Twist Lock
**Shared Specifications**
Poles: 3
Wires: 4
Terminal Material: Heavy-Duty Brass
Color: Black
Certification: cUL Listed
Commercial / Industrial Grade Construction
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# Why Choose Main ST Collective Electrical Products?
Main ST Collective electrical products are engineered to provide dependable performance wherever secure, reliable power is required.
Ideal for:
✔ Industrial Equipment
✔ Manufacturing Facilities
✔ Commercial Buildings
✔ Race Trailers
✔ Enclosed Equipment Trailers
✔ Industrial Generators
✔ Portable Power Distribution
✔ Fabrication Shops
✔ Workshops & Garages
✔ Construction Sites
✔ Agricultural Equipment
✔ Maintenance Departments
✔ Mobile Service Vehicles
✔ Custom Heavy-Duty Extension Cords
The twist-lock system helps maintain a secure electrical connection in demanding environments where vibration, movement, or frequent handling could disconnect standard plugs.
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# Installation Features
• Matching plug and connector provide a complete cord-end solution
• Twist-lock connection resists vibration and accidental unplugging
• Easy-to-wire screw terminal connections
• Heavy-duty brass contacts maximize conductivity
• Rugged commercial-grade construction designed for demanding industrial environments
• Durable housings resist wear, impact, and harsh working conditions
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# Available Pack Sizes
Choose the quantity that best fits your project:
• 1 Pack (1 Plug + 1 Connector)
• 2 Pack (2 Plugs + 2 Connectors)
• 4 Pack (4 Plugs + 4 Connectors)
• 6 Pack (6 Plugs + 6 Connectors)
• 8 Pack (8 Plugs + 8 Connectors)
• 10 Pack (10 Plugs + 10 Connectors)
• 12 Pack (12 Plugs + 12 Connectors)
• 15 Pack (15 Plugs + 15 Connectors)
• 20 Pack (20 Plugs + 20 Connectors)
Perfect for individual repairs, contractors, electricians, maintenance departments, fabrication shops, industrial facilities, and commercial inventory.
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# Common Applications
✔ Custom Extension Cord Builds
✔ Industrial Power Distribution
✔ Manufacturing Equipment
✔ Commercial Machinery
✔ Generator Connections
✔ Portable Power Systems
✔ Race Trailer Electrical Systems
✔ Industrial Workshops
✔ Maintenance Operations
✔ Construction Equipment
✔ Agricultural Facilities
✔ Specialty Electrical Installations
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# Package Contents
Quantity selected from the listing variant:
Each set includes:
• 1 × Main ST Collective NEMA L16-20P Grounding Locking Plug
• 1 × Main ST Collective NEMA L16-20R Grounding Locking Connector
Available Pack Sizes:
1PK • 2PK • 4PK • 6PK • 8PK • 10PK • 12PK • 15PK • 20PK
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# Buyer Notes
✔ Verify your electrical application and NEMA configuration before ordering.
✔ Intended for 20A, 480V AC NEMA L16-20 applications.
✔ Each pack contains one matching plug and one matching connector per set.
✔ Always disconnect power before wiring electrical devices.
✔ Installation should comply with all applicable local electrical codes.
✔ Professional installation is recommended for commercial and industrial electrical equipment.
✔ Genuine Main ST Collective products supplied by Main Street Eshop.
Order Processing
All orders are processed and shipped within 24 hours of purchase (excluding weekends and holidays).
Orders placed after 3:00 PM EST may ship the following business day.
Shipping Methods
Customers select their preferred shipping method and speed at checkout.
Shipping times are determined by the carrier and cannot be guaranteed by us.
Tracking information will be provided once your order has shipped.
Shipping Coverage
If your package arrives damaged, please notify the delivery driver immediately and contact the shipping carrier to file a claim.
You must report any missing or damaged items within 14 days of delivery.
After this time, we cannot be held responsible for lost or damaged items.
Return Window
You have 30 days from the date of delivery to request a return.
After 30 days, we are unable to accept returns, exchanges, or refund requests.
Eligibility
Items must be returned in their original condition—unused, unwashed, and with all tags and packaging intact.
Certain products may not be eligible for return (e.g., special-order items, customized products, or perishable goods).
Items that have been altered, installed, or modified cannot be returned.
Return Process
Contact our Customer Support team to request a Return Authorization (RMA) before sending items back.
Once your return is approved, you’ll receive instructions on where to send the product.
Customers are responsible for return shipping costs unless the item was defective or incorrect.
Refunds
Refunds are issued to the original payment method once the returned item has been received and inspected.
Please allow 5–10 business days for the refund to appear on your account.
In some cases, a restocking fee may apply (if applicable, this will be disclosed during your return authorization).
