Overview
The Hubbell 4720-C twist-lock insulgrip plug is an industrial-grade male connector designed for secure, reliable power distribution in harsh environments. Rated at 15A 125V with NEMA L5-15P configuration, this plug delivers dependable performance in manufacturing facilities, data centers, and heavy-duty equipment applications. The lot of 4 units provides multiple connection points for expanded installation flexibility.
Key Features
- Twist-lock design — provides accidental disconnection protection and superior grip assurance
- Insulgrip nylon construction — heat and chemical resistant with superior strain relief for long-lasting performance
- 2-Pole 3-Wire Grounding — includes dedicated ground conductor for safety-critical applications
- Screw terminals — allows field-configurable wire gauge accommodation (0.23–0.72 in diameter cord)
- Dead-front design — recessed pin configuration minimizes shock hazard during connection/disconnection
- Industrial-grade durability — engineered for healthcare facilities, factories, and data centers
Technical Specifications
- Amperage: 15A
- Voltage: 125V AC
- Configuration: 2-Pole 3-Wire Grounding (L5-15P NEMA)
- Material: Black and White Nylon
- Terminal Type: Screw Terminal
- Horsepower Rating: 0.5 hp maximum
- Operating Temperature Range: –40°C to +75°C (continuous)
- Dimensions: 1.53 × 1.53 × 1.97 inches
- Weight: 0.15 lbs (per unit)
- Cord Diameter: 0.23–0.72 inches
- Enclosure Rating: IP20
- Certifications: UL 498, Federal Specification W-C-596, CSA C22.2 No. 42
Typical Applications
- Industrial equipment power feeds requiring frequent connection/disconnection cycles
- Healthcare facility electrical distribution (portable medical equipment)
- Factory machinery and control circuits (125V branch circuits)
- Data center temporary or semi-permanent power distribution
- Temporary event power, construction site power distribution
- Marine and vehicle auxiliary power systems
Compatibility & Replacements
Compatible With
- Hubbell L5-15R receptacles (matching twist-lock inlet)
- Industrial-grade power distribution systems rated 125V 15A
- Standard US single-phase electrical circuits
- Equipment requiring NEMA L5-15P male connector interface
Replaces / Drop-In Replacement For
- Hubbell HBL4720-C (alternative designation for this model)
- Older Hubbell 4720 models (verify connector condition before substitution)
- Generic 15A 125V twist-lock plugs from other manufacturers (verify NEMA L5-15P compatibility)
Works With
- Hubbell Insulgrip twist-lock connector ecosystem
- NEMA L5-15P standardized receptacles and power equipment
- Standard screw-terminal cord assembly techniques
- Industrial electrical maintenance and troubleshooting tools
