Hubbell HBL63CM61 Marine 50A Male Plug - Premium Galvanized Twist-Lock

Complete your high-capacity marine electrical system with the Hubbell HBL63CM61 50A Marine Male Plug, engineered with premium nickel-plated brass components for maximum conductivity and corrosion resistance. This heavy-duty twist-lock plug delivers reliable 50-amp power connection with the advanced materials and construction that demanding marine applications require.

Premium Marine Construction

• Nickel-Plated Brass Shell: Superior corrosion resistance and positive electrical alignment
• Copper Crimp Barrels: Maximum conductivity and reliable wire terminations
• Nickel-Plated Brass Contacts: Enhanced corrosion protection and electrical performance
• Galvanized Finish: Additional corrosion barrier for extended marine service life
• Twist-Lock Security: Hubbell's proven locking mechanism prevents accidental disconnection
• Composite Body: Engineered materials for structural integrity and electrical insulation

50A Heavy-Duty Performance

• 50 Ampere Capacity: High-current capability for large marine electrical systems
• 125V Operation: Standard marine voltage for shore power and onboard systems
• 2-Pole, 3-Wire Grounding: Complete electrical safety with proper grounding
• Screw Terminal Connection: Secure, permanent wire attachment for professional installations
• Non-NEMA Marine Configuration: Specialized design optimized for marine electrical demands
• IP20 Environmental Rating: Suitable for protected marine electrical installations

Technical Specifications

Model Number:	HBL63CM61
UPC Code:	783585808710
Current Rating:	50 Amperes
Voltage Rating:	125V AC
Configuration:	2-Pole, 3-Wire Grounding
Connector Type:	Male Plug
Locking Mechanism:	Twist-Lock®
Terminal Type:	Screw Terminal
Shell Material:	Nickel-Plated Brass
Contact Material:	Nickel-Plated Brass
Crimp Barrels:	Copper
Body Material:	Composite
Finish:	Galvanized
Color:	Metallic
Standard:	Non-NEMA Marine Grade
Environmental Rating:	IP20 Suitability
Mounting:	Cord Mounted

Advanced Material Engineering

The HBL63CM61 incorporates premium materials for superior marine performance:

• Nickel-Plated Brass Shell: Provides excellent electrical conductivity while resisting marine corrosion
• Positive Alignment Design: Shell geometry ensures proper mating and electrical contact
• Copper Crimp Barrels: Maximum electrical conductivity for high-current applications
• Corrosion-Resistant Contacts: Nickel plating prevents oxidation and maintains electrical integrity
• Galvanized Protection: Multi-layer corrosion protection system for extended service life

High-Current Marine Applications

Essential for demanding marine electrical systems:

• Large yacht and superyacht shore power feeds
• Commercial vessel high-capacity electrical connections
• Marina power distribution above 30A capacity
• Heavy-duty marine equipment power supply
• Marine industrial applications and shipyards
• High-capacity battery charging system connections
• Marine crane and winch electrical feeds

Professional Installation Requirements

50A marine electrical connections require certified marine electrician installation to ensure:

• Proper Wire Sizing: Minimum 6 AWG copper conductors for 50A service
• Overcurrent Protection: Appropriate breaker or fuse sizing per ABYC E-11
• Grounding Compliance: Proper grounding and bonding per marine electrical standards
• Connection Integrity: Secure crimp or screw terminal connections
• Environmental Protection: Appropriate enclosure for marine environment

Twist-Lock Operation & Safety

The twist-lock mechanism provides secure electrical connection through:

• Positive Locking: Bayonet-style connection prevents accidental disconnection
• Mechanical Stability: Secure retention under vibration and movement
• Electrical Integrity: Consistent contact pressure for reliable current flow
• Safety Protocol: Cannot be disconnected under load without deliberate action

Marine Environmental Durability

Engineered for long-term marine service with features including:

• Multi-layer corrosion protection system
• Composite body materials resist UV degradation
• Temperature rating from -40°C to +75°C
• Saltwater and chemical resistance
• Mechanical shock and vibration tolerance

Frequently Asked Questions

What wire gauge is required for this 50A plug?

Minimum 6 AWG copper conductors are required for 50A service, though specific installations may require larger conductors based on run length and voltage drop calculations per ABYC E-11.

How do the nickel-plated brass components improve performance?

Nickel plating provides superior corrosion resistance compared to standard brass while maintaining excellent electrical conductivity, ensuring reliable long-term performance in marine environments.

What is the advantage of copper crimp barrels?

Copper crimp barrels provide maximum electrical conductivity and create gas-tight connections that maintain electrical integrity over time, critical for high-current marine applications.

Can this plug be used with standard 50A receptacles?

This is a Non-NEMA marine configuration. Compatibility with specific receptacles should be verified, as it may not mate with standard NEMA receptacles.

Is this plug suitable for outdoor marine installations?

The IP20 rating makes this suitable for protected marine environments. For exposed installations, additional weatherproof enclosures may be required.

How does the galvanized finish enhance corrosion protection?

Galvanizing provides a sacrificial zinc layer that corrodes preferentially to the base metal, offering long-term protection against saltwater corrosion.

Hubbel Locking Devices, Twist-Lock®, Marine Grade, Male Plug, 50A 125V, 2-Pole 3-Wire Grounding, Non-NEMA, Screw Terminal, Galvanized

Model: HBL63CM61

• Nickel plated brass shell for positive alignment
• Copper crimp barrels for reliable terminations
• Nickel plated brass contacts for corrossion resistance

Specifications

Application	Marine Wiring Devices
Color	Metallic
Environmental Conditions	Indoor Dry Unless Protected By Additional Means
Item Type	Standard
Material	Composite
Material - Mounting Hardware	Cord Mounted
Number Of Poles	2-Pole
OEM Brand Name	Hubbell Wiring Device-Kellems
Performance	Environmental - Moisture Resistance - IP20 Suitability

The combination of a heat-resistant thermoset interior and metal and rubber cord dripping provides excellent strain relief. The clamp range is .437-1.140". 50Amp 125V.
SKU: NVN-1000641
MPN: HBL63CM61
UPC: 783585808710