Overview
The Hubbell Wiring Device-Kellems HBL2431S is a Twist-Lock® Safety-Shroud® plug rated 20A, 3-Phase 480V AC, 3 Pole 4 Wire Grounding (NEMA L16-20P). Designed for extra heavy-duty industrial applications, it features a protective shroud that reduces the risk of inadvertent blade contact when connecting or disconnecting under load. The plug is made in the USA and complies with OSHA Lockout/Tagout requirements per 29 CFR part 1910.147.
Features
- Safety-Shroud® design reduces exposure to energized blades during connection and disconnection
- Ribbed nylon housing provides secure grip with impact and chemical resistance
- Superior cord grip design protects terminations from excess strain
- Integral dust shield protects wiring chamber from dust and contaminants
- Accepts 0.350–1.150 in. (9–29 mm) cord diameter
- Compatible with most equivalently-rated NEMA-Locking connectors for Type 1 (indoor) applications
- Alignment mark on shroud key accepts 3/16 in. padlock shackle for OSHA Lockout/Tagout compliance
- Can be mechanically interlocked using Hubbell Cat. No. HBLMITL
- Terminals accept #16 AWG – #8 AWG stranded copper wire only
- Made in U.S.A.
Specifications
| Manufacturer | Hubbell Wiring Device-Kellems |
|---|---|
| Catalog Number | HBL2431S |
| UPC | 783585234625 |
| Product Type | Plug |
| NEMA Configuration | L16-20P |
| Current Rating | 20A |
| Voltage Rating | 480V AC, 3-Phase |
| Poles / Wires | 3 Pole, 4 Wire Grounding |
| Application | Extra Heavy Duty Industrial |
| Housing Material | Black and White Nylon |
| Shroud Material | White PBT (Valox®) |
| Blades | Brass |
| Terminal Screws | #10-32 Brass (Phillips / Slotted / Robertson) |
| Terminal Accommodation | #16 AWG – #8 AWG stranded copper wire |
| Cord Diameter Range | 0.350–1.150 in. (9–29 mm) |
| Current Interrupting | Rated for full rated current interrupting |
| Dielectric Voltage | 2,000V minimum |
| Flammability | HB or better per UL94 / CSA 22.2 No.0.17 |
| Moisture Resistance | IP20 Suitability |
| Operating Temperature | Max. continuous 75°C; Min. -40°C (without impact) |
| Listings / Certifications | Listed to UL 498; Certified to CSA C22.2 No.42; Fed.Spec. W-C-596 |
| Country of Origin | United States |
| Unit of Measure | Each (EA) |






