Overview
The Hubbell HBL2420SR is a heavy-duty industrial Twist-Lock safety shroud receptacle designed for 20A, 3-phase delta 250V AC service. This surface-mount unit features a secure L15-20R configuration with 3-pole 4-wire grounding, making it a reliable choice for permanent or temporary power distribution in industrial automation, testing laboratories, and manufacturing environments. The engineered thermoplastic housing is impact and corrosion resistant, making it suitable for heavy-duty industrial environments.
Key Features
- Alignment arrows with lock and unlock symbols provide a visual indication that devices are properly connected.
- 3-pole 4-wire grounding for enhanced safety and noise suppression
- Made of clear polycarbonate terminal retainer, impact modified PBT housing.
- Steel, nickel plated 0.08 inch curved, scalloped terminal clamp.
- Color-coded voltage rating visible during operation for easy identification
- Back and side wiring capability with wire restraint recess to prevent terminal loosening
Technical Specifications
- Amperage Rating: 20A
- Voltage: 250V AC, 3-Phase Delta
- Configuration: NEMA L15-20R, 3-Pole 4-Wire Grounding
- Mounting: Surface Mount
- Housing Material: Impact-modified PBT thermoplastic
- Wire Accommodation: #10 to #8 AWG solid or stranded copper wire termination.
- Terminal Type: Screw Terminal
- Terminal Fasteners: #10-32 brass multi-drive terminal screw and #10-32 brass ground screw.
- Color: Gray
- Dimensions: 4.56″ L × 2.84″ W × 1.71″ H
- Standards Compliance: UL 498, Federal Specification W-C-596
Typical Applications
The HBL2420SR is ideal for:
- Industrial control systems and motor circuits requiring secure locking connectors
- Manufacturing equipment power distribution
- Test stands and laboratory power distribution
- Temporary and permanent industrial power installations
- Automatic transfer switches and backup power applications
- Any 3-phase 250V industrial service requiring twist-lock safety features
Compatibility & Replacements
Compatible With
- Hubbell HBL2420 series plugs and connectors
- All NEMA L15-20P standard twist-lock plugs
- Industrial power distribution panels and enclosures
- 3-phase 250V AC circuit applications
- Equipment and machinery designed for L15-20R receptacle interfaces
Replaces / Drop-In Replacement For
The HBL2420SR directly replaces the standard HBL2420 flush receptacle (black nylon) where a surface-mount safety shroud design is required or preferred. Both units share the same NEMA L15-20R configuration and 20A 250V 3-phase rating. Verify mounting requirements (flush vs. surface) before ordering as a replacement.
Works With
- NEMA L15-20P locking plugs and adapters
- Industrial twist-lock cables and cordsets
- Automatic transfer switches supporting L15-20R configuration
- Motor starters and soft-start equipment rated for 20A 250V service
- Generator and UPS units with L15-20R connectivity
