Overview
The Hubbell HBL2431SW is a heavy-duty, 20-ampere twist-lock watertight power plug designed for 3-phase 480V AC industrial applications. This shrouded male connector features a UL Type 4X environmental seal that maintains watertight protection both while connected and when disconnected, making it ideal for washdown environments, food processing facilities, wastewater treatment plants, and outdoor installations. The composite thermoplastic (polybutylene terephthalate) housing and recessed blade design deliver superior durability in demanding industrial settings.
Key Features
- Watertight Safety-Shroud Design: UL type 4X environmental seal while in use, protecting connections from moisture and contaminants.
- Impact-Resistant Shroud: Impact resistant shroud protects blades against bending and breaking and a superior cord grip design protects terminations from excess strain.
- Blade Protection: Recessed blades provide protection against bending and breaking.
- Chemical Resistant Housing: Chemical resistant thermoplastic construction withstands harsh environments found in wastewater treatment plants.
- Twist-Lock Mechanism: L16-20P NEMA configuration with secure locking action prevents accidental disconnection.
- Dielectric Rating: Withstands 2,000V minimum dielectric voltage.
Technical Specifications
- Amperage Rating: 20A
- Voltage: 3-Phase 480V AC
- NEMA Configuration: L16-20P
- Pole Configuration: 3-Pole, 4-Wire Grounding
- Connector Type: Male Plug (Twist-Lock)
- Terminal Style: Screw Terminals
- Wire Compatibility: #16 AWG – #8 AWG stranded copper wire
- Cord Diameter Range: 0.35 in. – 1.15 in.
- Housing Material: Polybutylene Terephthalate (PBT)
- Housing Color: Black body, White clamps
- Operating Temperature: -40°C to +75°C (maximum continuous)
- Flammability Rating: V0 per UL94 or CSA 22.2 No. 0.17
- Environmental Rating: Type 4, 4X, 12, IP66 suitability
- Dielectric Voltage: 2,000V minimum
- Current Interrupting: Certified for full rated current interrupting
- Weight: 0.7 lbs
- Maximum Horsepower: 5 hp
Typical Applications
The Hubbell HBL2431SW is widely used in:
- Food Processing: Watertight connections for machinery and processing equipment in wet production environments.
- Wastewater Treatment: Chemical-resistant design for harsh treatment plant conditions.
- Outdoor Industrial Equipment: Weather-sealed connections for temporary power distribution and portable generators.
- Military & Aerospace: Heavy-duty, mission-critical power distribution requiring maximum reliability.
- Marine & Offshore: Saltwater-resistant construction for shipboard and offshore installations.
- Construction & Portable Power: Robust cord-mounted design for job-site temporary power systems.
Compatibility & Replacements
Compatible With
- L16-20R female receptacles and connectors
- Industrial twist-lock power distribution systems (NEMA L16-20)
- Temporary power distribution equipment rated for 20A, 480V 3-phase
- Power cords and cable assemblies rated for L16-20 configuration
- Portable industrial equipment with L16-20R inlets
Replaces / Drop-In Replacement For
- Hubbell HBL2431 (non-shrouded version of same rating)
- Other manufacturers’ 20A 480V 3-phase L16-20P shrouded plugs
Works With
- NEMA L16-20R receptacles and inlet connectors
- Twist-Lock power distribution systems and panelboards
- Heavy-duty industrial power cords and assemblies
- Outdoor and washdown-rated electrical installations
