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By Hubbell Wiring Device-Kellems 

Catalog ID: HBL504NM

By Hubbell Wiring Device-Kellems
Catalog ID:  HBL504NM
Locking Devices, Twist-Lock®, Marine Grade, Shore Power Inlet, 50A 125/250V, 3-Pole 4-Wire Grounding, Non-NEMA, Screw Terminal, White
  • New quick connect with backwards compatibility
  • Self-closing Friction Tight Cover
  • Threaded Base for making a watertight seal
  • Rear enclosure is nickel plated for corrossion resistance
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Product Details


Application Marine Wiring Devices
Color White
Environmental Conditions Watertight
Insulation Insulated Body
Item Type Hull Mount Single
Material Thermoplastic
Material - Mounting Hardware Screw Mounting
Number Of Poles 3-Pole
OEM Brand Name Hubbell Wiring Device-Kellems
Performance Environmental - Moisture Resistance - IP55 Suitability
Temperature Rating Maximum Continuous: 75° C; Minimum Continuous: -40° C w/o impact
UPC 783585519470


Display Size Standard Sized Product

Electrical Ratings

Amperage Rating 50 A
Connectivity Pressure Terminal Screws
Current / Amperage Rating 50 A
Current Rating 50 A
Dielectric Strength Withstands 3000V Minimum in
Phase Single Phase
Voltage Rating 125/250 VAC
Wattage 12500

Conductor Related

Number Of Wires 4-Wire Grounding
Wire Size #6 AWG

Certifications and Compliance

Industry Standard(s) UL Listed


Carton Quantity 5

Resources and Downloads

Installation/Instruction Manual (IOM)


Marine Electrical Products