# Hubbell HBL28W78 Twist-Lock Plug, 30A 120/208V, NEMA L18-30P, 3-Phase Wye, Watertight - MROSupply.com

***Hubbell HBL28W78 Twist-Lock plug rated 30A 120/208V with NEMA L18-30P configuration for 3-phase wye applications. Watertight construction provides reliable performance in wet environments. 4-pole 5-wire grounding design.***



## Product details:

- Catalog number: HBL28W78
- SKU: 5018076
- Price: ***$105.36*** Each
- Quantity: This vendor has a minimum order quantity of
5.Order minimum ($) may be applied.
Add desired QTY to cart and proceed to checkout to view minimum'

- Brand Minimum Order Quantity - 5
(This is the minimum order quantity if ordering this unit alone
from the vendor. Adding other products from the same vendor will reduce
the overall requirement. If adding multiple products from same vendor,
please add all products to cart to see total minimum.)
- Shipping: ***FREE SHIPPING***  ON ORDERS OVER $100
- Typically Ships in: 1 day
- Brand: [Hubbell Wiring](https://www.mrosupply.com/brands/hubbell-wiring/)
- Category: 
    - [Twist Lock Plugs](htts://www.mrosupply.com/electrical/plugs-and-receptacles/twist-lock-plugs/)
    - [Plugs and Receptacles](htts://www.mrosupply.com/electrical/plugs-and-receptacles/)
    - [Electrical](htts://www.mrosupply.com/electrical/)
- Unit of measure: each
- Technicall support: contact supplier for technical support on jruvalcaba@hubbell.c


## Product images:
- https://static.mrosupply.com/images/noimage.webp


## Product attributes;

  
- Amperage: 30 A
  

  
- Color: Yellow
  

  
- Current / amperage rating: 30 A
  

  
- Dimensions: 2.77 in x 2.77 in x 3.94 in
  

  
- Height: 3.94 in
  

  
- Industry Standard(s): Meets NEMA WD-1, WD-6 And ANSI Standards
  

  
- Item type: 30A Watertight Twist-Lock Plug
  

  
- Length: 2.77 in
  

  
- Nema Rating: L18-30P
  

  
- Number of poles: 4-Pole
  

  
- Number of wires: 4-Wire
  

  
- Type: Plugs
  

  
- Voltage: 3-Phase Y 120/208 VAC
  

  
- Voltage rating description: 3-Phase Y 120/208 VAC
  

  
- Width (in): 2.77
  

  
- Wire size: 8/3 S, 8/4 S, 10/5 S
  
## Product documents / software:

- [Catalog Page](https://documents.mrosupply.com/product_documents/HB/HBL29W47/C-7_tQak5Rj.pdf)
- [HBL28W78 Hubbell Wiring](https://documents.mrosupply.com/product_documents/50/18/5018076/3f52868107aeff9ccbc9fcdb943c7f65f003ea308d69ac_psGyGLv.pdf)
- [HBL28W78 Hubbell Wiring](https://documents.mrosupply.com/product_documents/50/18/5018076/Wiring_Device_Kellems_HBL27W74_Catalog_kcBjxY4.pdf)
- [Installation Instructions](https://documents.mrosupply.com/product_documents/HB/HBL29W47/35CPD2635_UJc9oNA.pdf)
- [Product Drawing DWG](https://documents.mrosupply.com/product_documents/HB/HBL28W08/25CM12627_ACAD_vfyiFAr.dwg)
- [Product Drawing PDF](https://documents.mrosupply.com/product_documents/HB/HBL26W09/15CM12627_VK4GENo.pdf)
## Suggested products:
- [Hubbell HBL28W78 Twist-Lock plug rated 30A 120/208V with NEMA L18-30P configuration for 3-phase wye applications. Watertight construction provides reliable performance in wet environments. 4-pole 5-wire grounding design.](https://www.mrosupply.com/products/5018076/as-markdown/)
- [Hubbell HBL28W76BK Twist-Lock Plug, 30A 480V, NEMA L16-30P, 3-Pole 4-Wire Grounding, watertight. Industrial-grade locking plug with black nylon housing for impact and corrosion resistance in wet or damp environments.](https://www.mrosupply.com/products/5018070/as-markdown/)
- [Hubbell HBLWTCS3 watertight replacement cone seal set for size 3 connectors. Restores watertight integrity of Hubbell watertight wiring devices, ensuring reliable performance in wet or damp environments. Constructed from durable materials for long-lasting service.](https://www.mrosupply.com/products/5019177/as-markdown/)
- [Hubbell HBL29W76BK Twist-Lock receptacle rated 30A at 480V with NEMA L16-30R configuration. This 3-pole 4-wire grounding device features a watertight design for wet locations. The black nylon housing provides durability and corrosion resistance. Ideal for industrial and commercial applications requiring a locking connection in harsh environments.](https://www.mrosupply.com/products/5018094/as-markdown/)
- [Hubbell HBL29W47BK Twist-Lock receptacle, 30A 125V, NEMA L5-30R, 2-Pole 3-Wire Grounding. Black nylon housing with industrial grade locking design for secure connections in commercial and industrial applications. UL and CSA listed.](https://www.mrosupply.com/products/5018084/as-markdown/)

## Product's reviews:
- Helpful and good service - Even when I mistakenly ordered the incorrect product, they quickly organised the RMA and paperwork so I could ship right back. Found them very helpful
- Not bad - Unfortunately the mounting holes for this receptacle did not match the Arlington DBVS2C-1 Low Profile IN BOX Electrical Box. Otherwise it is a nice product.
- Thank you for carrying hubble and wiremold - With Hubble I am able to meet UL a smaller conduit for four #6 THHN wires than if I used Wiremold. The Hubble version is hard to obtain because Wiremold dominates this sector.
- The right stuff - Worry free order. Came fast and exactly as described. Will use MRO again.