Hubbell Wiring Devices HBL4770C 15 Amp 277 VAC NEMA L7-15P Black and White Nylon Single Locking Plug
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Manufacturer Hubbell Wiring Device
Mfg Catalog # HBL4770C
World Electric Part # 676


  • Individually molded face for each blade configuration
  • Roomy wiring chamber provides ample space for wiring
  • Ribbed nylon housing provides a secure grip that’s impact and chemical resistant



  • Application: Extra Heavy Duty Industrial
  • Environmental Conditions: Indoor Dry Unless Protected By Additional Means
  • Horsepower - Maximum: 2
  • Item Type: 15A Grounding Insulgrip® Plug
  • Material: Nylon
  • Material - Mounting Hardware: Cord Mounted
  • Number Of Poles: 2-Pole
  • OEM Brand Name: Hubbell Wiring Device-Kellems
  • Operating Temperature: Maximum continuous 75°C and minimum -40°C without Impact
  • Performance: Electrical - Current Interrupting - Certified for current interrupting at full rated current | Electrical - Dielectric Voltage - Withstands 2,000V minimum | Environmental - Flammability - HB or better per UL94 or CSA 22.2 No. 0.6 | Environmental - Moisture Resistance - IP20 Suitability | Environmental - Operating Temperatures - Maximum Continuous 75°C Minimum -40°C (w/o impact) | Mechanical - Terminal Accommodation - #16 AWG - #8 AWG stranded copper wire only. | Mechanical - Terminal Identification - Terminals identified in accordance with UL 498
  • Type: Plugs
  • UPC: 783585171708


  • Dimensions: 1.53 in x 1.53 in x 1.97 in
  • Display Size: Standard Sized
  • Height: 1.97 in
  • Length: 1.53 in
  • Weight: 0.15 lb
  • Width: 1.53 in

Electrical Ratings

  • Amperage Rating: 15 A
  • Connectivity: Pressure Terminal Screws
  • Current / Amperage Rating: 15 A
  • Current Rating: 15 A
  • Dielectric Strength: Withstands 2,000V minimum
  • Phase: Single Phase
  • Voltage Rating: 277 VAC
  • Voltage Rating Description: 277 VAC
  • Wattage: 4155 W

Conductor Related

  • Cable Range: 0.230 - 0.720 in
  • Cord Type: All Listed Portables
  • Number Of Wires: 3-Wire
  • Wire Size: #16 AWG to #8 AWG

Certifications and Compliance

  • Industry Standard(s): Certified to CSA C22.2 No.42 | Fed.Spec. W-C-596 | Listed to UL 498
  • Nema Rating: L7-15P


  • Carton Quantity: 10


UPC 78358517170
Product Description Locking Devices, Twist-Lock®, Industrial, Male Insulgrip® Plug, 15A 277V AC, 2-Pole 3-Wire Grounding, NEMA L7-15P, Screw Terminal, Black and White Nylon.
GTiN 00783585171708
Length 1.53 in
Width 1.53 in
Size 1.53 in x 1.53 in x 1.97 in
Color Black/White
Voltage 277 V
Type Insulgrip, Standard Sized
Material Composite
Conductor Size 14-12 AWG
Cord Type Portable
Applications Extra Heavy Duty Industrial Application
Mounting Type Surface
Height 1.97 in
Weight 0.15 lb
Wire Size 16 AWG-8 AWG
Wattage 4155 Watt
Family Brand Name Hubbell Wiring Device Kellems
Grounding Yes
TC Connection Terminal Screws
Current 15 A
Environmental Conditions Indoor Dry Unless Protected by Additional Means
Number of Poles 2 Pole
Number of Wires 3
Sub Brand Twist-Lock, Insulgrip
Standard CSA C22.2 No.42,Fed.Spec. W-C-596,UL 498

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